/* =========================================================
   01. Root / Base
========================================================= */
:root{
  --bg:#ffffff;
  --bg-alt:#f4f6fb;
  --text:#222;
  --muted:#666;
  --line:#d7d7d7;
  --line-dark:#bcbcbc;
  --accent:#1f2f5c;
  --accent-dark:#162346;
  --accent-light:#d9e0f2;
  --accent-bg:#f4f6fb;
  --max:1240px;
  --radius:14px;
  --anchor-offset:112px;
}

*{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
  scroll-padding-top:var(--anchor-offset);
}

body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  font-size:18px;
  color:var(--text);
  background:var(--bg);
  line-height:1.8;
}

img{
  max-width:100%;
  display:block;
}

a{
  color:inherit;
  text-decoration:none;
}

/* Text Links */
.prose a,
.footer__meta a,
.topbar__links a,
#about a,
.check a,
.recaptcha-note a{
  color:var(--accent);
}

#about a,
.check a,
.recaptcha-note a{
  text-decoration:underline;
  text-underline-offset:3px;
}

.container{
  width:min(calc(100% - 40px), var(--max));
  margin-inline:auto;
}

.narrow{
  width:min(calc(100% - 40px), 860px);
  margin-inline:auto;
}


/* =========================================================
   02. Topbar / Header / Navigation
========================================================= */
.topbar{
  border-bottom:1px solid var(--accent-light);
  background:var(--accent-bg);
  font-size:13px;
}

.topbar__inner{
  display:flex;
  justify-content:space-between;
  gap:24px;
  align-items:center;
  padding:10px 0;
}

.topbar__contact,
.topbar__links{
  color:var(--muted);
}

.topbar__links{
  display:flex;
  gap:16px;
}

.topbar__lang{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:34px;
  padding:4px 9px;
  border:1px solid var(--accent-light);
  border-radius:999px;
  background:#fff;
  color:var(--accent);
  line-height:1.2;
  font-size:12px;
}

.topbar__lang:hover{
  background:var(--accent);
  border-color:var(--accent);
  color:#fff;
}

.topbar__lang.is-current{
  background:var(--accent);
  border-color:var(--accent);
  color:#fff;
}

.site-header{
  position:sticky;
  top:0;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  z-index:20;
}

.header__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:16px 0;
}

.site-brand{
  display:flex;
  align-items:center;
  gap:12px;
  min-width:240px;
  width:100%;
}

.site-brand img{
  max-width:40px;
}

.site-brand__mark{
  display:grid;
  place-items:center;
  width:48px;
  height:48px;
  border:1px solid var(--line-dark);
  background:#efefef;
  font-size:12px;
}

.site-brand__text{
  font-weight:700;
  line-height:1.4;
}

.site-nav{
  display:flex;
  gap:20px;
  align-items:center;
  font-size:14px;
}

.site-nav a{
  padding:6px 0;
  border-bottom:1px solid transparent;
}

.site-nav a:hover{
  border-color:#111;
}

.nav-toggle{
  display:none;
}


/* =========================================================
   03. Hero : Plan 1
   左寄せテキスト + 右に薄い都市背景
========================================================= */
.hero{
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}

.hero--city{
  min-height:720px;
  display:flex;
  align-items:center;
  background:#f7f7f7;
}

.hero__bg,
.hero__overlay{
  position:absolute;
  inset:0;
}

.hero__bg{
  background:
    linear-gradient(
      to right,
      rgba(255,255,255,0.96) 0%,
      rgba(255,255,255,0.92) 28%,
      rgba(255,255,255,0.80) 46%,
      rgba(255,255,255,0.42) 68%,
      rgba(255,255,255,0.12) 100%
    ),
    url("../../images/hero-city.jpg") no-repeat right center / cover;
  transform:scale(1.02);
}

.hero__overlay{
  background:
    radial-gradient(circle at 78% 28%, rgba(255,255,255,0.16) 0%, rgba(255,255,255,0) 38%),
    linear-gradient(to bottom, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  pointer-events:none;
}

.hero__inner{
  position:relative;
  z-index:1;
  width:100%;
  max-width:1280px;
  margin:0 auto;
  padding:80px 40px;
}

.hero__content{
  max-width:720px;
  text-align:left;
}

.hero__label{
  display:inline-block;
  margin:0 0 28px;
  padding:10px 16px;
  border:1px solid var(--accent-light);
  border-radius:999px;
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--accent);
  background:rgba(31,47,92,0.06);
  backdrop-filter:blur(2px);
}

.hero h1{
  margin:0;
  font-size:clamp(36px, 5vw, 49px);
  line-height:1.35;
  letter-spacing:.02em;
  max-width:none;
  color:#111;
  text-shadow:0 1px 0 rgba(255,255,255,0.25);
}

.hero__line{
  width:52px;
  height:2px;
  margin:28px 0;
  background:#111;
}

.hero__text{
  max-width:none;
  margin:0;
}

.hero__text p{
  margin:0 0 14px;
  color:#222;
}

.hero__actions{
  display:flex;
  justify-content:flex-start;
  gap:14px;
  flex-wrap:wrap;
  margin-top:30px;
}

.hero__buttons{
  margin:10px 0 0;
}

.hero__buttons a{
  margin:5px 0;
}


/* =========================================================
   04. Buttons
========================================================= */
.btn{
  display:inline-flex;
  justify-content:center;
  align-items:center;
  min-width:190px;
  min-height:56px;
  padding:14px 24px;
  border-radius:999px;
  border:1px solid #111;
  transition:.2s;
  background:#fff;
  cursor:pointer;
  font-family:inherit;
  font-size:16px;
  line-height:1.4;
}

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

.btn--primary:hover{
  background:var(--accent-dark);
  border-color:var(--accent-dark);
}

.btn--secondary{
  background:rgba(255,255,255,0.88);
  border-color:var(--accent);
  color:var(--accent);
}

.btn--secondary:hover{
  background:var(--accent-bg);
}

.btn--full{
  width:100%;
  max-width:500px;
  margin:0 auto;
}


/* =========================================================
   05. Common Sections
========================================================= */
.section{
  padding:72px 0;
}

.section--alt{
  background:var(--bg-alt);
}

.section--cta{
  border-top:1px solid var(--line);
}

.section-heading{
  margin-bottom:28px;
}

.section-heading__eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 10px;
  border:1px solid var(--accent-light);
  font-size:12px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--accent);
  background:var(--accent-bg);
}

.section-heading h2{
  margin:12px 0 0;
  font-size:clamp(26px,3vw,38px);
  line-height:1.4;
}

.lead{
  font-size:20px;
  font-weight:700;
}


/* =========================================================
   06. Profile
========================================================= */
.profile{
  display:grid;
  grid-template-columns:320px 1fr;
  gap:42px;
  align-items:start;
}

.placeholder{
  border:1px solid var(--line-dark);
  background:linear-gradient(135deg,#ececec,#dcdcdc);
  color:#777;
  display:grid;
  place-items:center;
}

.placeholder--portrait{
  aspect-ratio:3/4;
  min-height:460px;
}


/* =========================================================
   07. Services
========================================================= */
.services-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
  align-items:start;
}

.service{
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  background:#fff;
}

.service h3{
  margin:0 0 14px;
  font-size:22px;
  line-height:1.5;
}

.service__body p{
  margin:0 0 10px;
  color:#333;
}

.service--featured{
  grid-column:1 / -1;
  border:1px solid var(--accent);
  background:#fff;
  box-shadow:0 8px 24px rgba(31,47,92,0.06);
}

.note{
  margin-top:20px;
  color:var(--muted);
  font-size:14px;
}

.check-list{
  margin:10px 0 0;
  padding-left:1.1em;
}


/* =========================================================
   08. Contact CTA
========================================================= */
.contact-cta{
  text-align:center;
}

.contact-cta__actions{
  display:flex;
  justify-content:center;
  gap:14px;
  flex-wrap:wrap;
  margin-top:26px;
}


/* =========================================================
   09. Sub Page Hero / Contact Layout
========================================================= */
.page-hero{
  padding:52px 0 18px;
  border-bottom:1px solid var(--line);
}

.page-hero h1{
  font-size:clamp(28px,4vw,42px);
  margin:10px 0 0;
}

.contact-layout{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:24px;
  align-items:start;
}

.contact-form-box,
.office-box{
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  background:#fff;
}

.contact-form{
  display:grid;
  gap:18px;
}

.contact-form label{
  display:block;
  font-size:18px;
  font-weight:700;
}

.contact-form input,
.contact-form select,
.contact-form textarea{
  display:block;
  width:100%;
  margin-top:8px;
  padding:14px;
  border:1px solid var(--line-dark);
  border-radius:10px;
  background:#fff;
  font:inherit;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus{
  outline:2px solid var(--accent-light);
  border-color:var(--accent);
}

.contact-form textarea{
  resize:vertical;
}

.contact-form .check{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-weight:400;
}

.contact-form .check input{
  width:auto;
  margin-top:.45em;
}

.required{
  display:inline;
  margin-left:8px;
  padding:0;
  border-radius:0;
  background:none;
  color:var(--accent);
  font-size:inherit;
  font-weight:700;
  line-height:inherit;
}

.form-note,
.recaptcha-note{
  font-size:14px;
  color:var(--muted);
  line-height:1.8;
}

.form-note{
  margin:24px 0;
  padding:16px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--bg-alt);
}

.form-note p{
  margin:0;
}

.recaptcha-note{
  margin:4px 0 0;
}

.office-table{
  display:grid;
  gap:10px;
  margin:0;
}

.office-table div{
  display:grid;
  grid-template-columns:150px 1fr;
  gap:16px;
  min-width:0;
  padding:12px 0;
  border-bottom:1px solid var(--line);
}

.office-table dt,
.office-table dd{
  min-width:0;
}

.office-table dt{
  font-weight:700;
}

.office-table dd{
  margin:0;
  overflow-wrap:anywhere;
  word-break:normal;
}

.office-table dd a{
  overflow-wrap:anywhere;
  word-break:break-all;
}

/* =========================================================
   Office Summary
========================================================= */
.office-summary-section{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}

.office-box,
.office-summary{
  max-width:100%;
  overflow:hidden;
}

.office-summary{
  background:#fff;
  box-shadow:0 8px 24px rgba(31,47,92,0.04);
}

.office-summary .office-table div{
  grid-template-columns:180px 1fr;
}

.office-summary .office-table div:last-child{
  border-bottom:none;
}

.office-summary a{
  color:var(--accent);
  text-decoration:underline;
  text-underline-offset:3px;
}

html[lang="en"] .office-table dd{
  hyphens:auto;
}

/* =========================================================
   10. Privacy / Prose
========================================================= */
.prose h2{
  font-size:24px;
  margin:36px 0 10px;
}

.prose p{
  margin:0 0 12px;
}

.prose ul{
  margin:0 0 18px;
  padding-left:1.4em;
}

.prose li{
  margin:0 0 6px;
}


/* =========================================================
   11. Footer
========================================================= */
.site-footer{
  background:#f4f6fb;
  border-top:1px solid var(--line);
  padding:26px 0 18px;
}

.footer__inner{
  display:flex;
  justify-content:space-between;
  gap:20px;
  align-items:flex-start;
}

.footer__name{
  font-weight:700;
}

.footer__meta{
  color:var(--muted);
  font-size:14px;
}

.footer__meta--right{
  text-align:right;
}

.footer__bottom{
  display:flex;
  justify-content:space-between;
  gap:20px;
  align-items:center;
  padding-top:14px;
  margin-top:14px;
  border-top:1px solid var(--line);
}


/* =========================================================
   12. Anchor Position
========================================================= */
#about,
#profile,
#services,
#office,
#contact-section{
  scroll-margin-top:var(--anchor-offset);
}


/* =========================================================
   13. Accordion
========================================================= */
.accordion{
  margin-top:18px;
  border:1px solid var(--line);
  border-radius:12px;
  background:#fafafa;
}

.accordion summary{
  cursor:pointer;
  list-style:none;
  padding:14px 18px;
  font-weight:700;
}

.accordion summary::-webkit-details-marker{
  display:none;
}

.accordion[open] summary{
  border-bottom:1px solid var(--line);
}

.accordion__body{
  padding:16px 18px;
}

.services-grid--summary .service{
  height:100%;
}


/* =========================================================
   14. Mixed Variant
   featured service on top + plain list
========================================================= */
.service-feature-block--top{
  margin-bottom:22px;
}

.service-list-plain{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
  align-items:start;
}

.service-list-plain__item{
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  background:#fff;
}

.service-list-plain__item h3{
  margin:0 0 14px;
  font-size:22px;
  line-height:1.5;
}

.service-list-plain__item p{
  margin:0 0 10px;
  color:#333;
}


/* =========================================================
   15. Service Section Aligned to Screenshot
========================================================= */
/* .service-section-like-image .section-heading__eyebrow{
  display:none;
} */

.service-heading-like-image{
  max-width:none;
}

.service-heading-like-image h2{
  margin:12px 0 10px;
  font-size:clamp(36px,4vw,48px);
}

.service-heading-like-image p{
  margin:0 0 26px;
  color:var(--muted);
}

.service-feature-image-like__card{
  padding:28px 26px;
  border-radius:24px;
}

.service-feature-image-like__card h3{
  margin:0 0 22px;
  font-size:20px;
}

.service-feature-image-like__card .service__body p{
  margin:0 0 18px;
  line-height:1.9;
}

.service-feature-image-like__accordionlist{
  margin-top:10px;
}

.accordion--row{
  margin-top:0;
  border:none;
  border-radius:0;
  background:transparent;
  border-top:1px solid var(--line);
}

.accordion--row:last-child{
  border-bottom:1px solid var(--line);
}

.accordion--row summary{
  padding:18px 30px 18px 0;
  position:relative;
  font-weight:700;
}

.accordion--row summary::after{
  content:'+';
  position:absolute;
  right:0;
  top:50%;
  transform:translateY(-50%);
  font-size:28px;
  font-weight:300;
  line-height:1;
  color:var(--accent);
}

.accordion--row[open] summary::after{
  content:'−';
}

.accordion--row[open] summary{
  border-bottom:none;
}

.accordion--row .accordion__body{
  padding:0 0 20px;
  color:#333;
}

.service-list-stack{
  display:grid;
  gap:18px;
  margin-top:24px;
}

.service-list-stack__item{
  border:1px solid var(--line);
  border-radius:22px;
  padding:26px 24px;
  background:#fff;
}

.service-list-stack__item h3{
  margin:0 0 16px;
  font-size:20px;
  line-height:1.6;
}

.service-list-stack__item p{
  margin:0 0 10px;
  color:#333;
  line-height:1.9;
}

.service-list-stack__item p:last-child{
  margin-bottom:0;
}


/* =========================================================
   16. Responsive : Tablet
========================================================= */
@media (max-width: 1024px){
  .hero--city{
    min-height:640px;
  }

  .hero__inner{
    padding:72px 32px;
  }

  .hero__content{
    max-width:520px;
  }

  .hero__bg{
    background:
      linear-gradient(
        to right,
        rgba(255,255,255,0.94) 0%,
        rgba(255,255,255,0.88) 36%,
        rgba(255,255,255,0.72) 56%,
        rgba(255,255,255,0.34) 100%
      ),
      url("../../images/hero-city.jpg") no-repeat 72% center / cover;
  }
}


/* =========================================================
   17. Responsive : Layout
========================================================= */
@media (max-width: 980px){
  .services-grid,
  .contact-layout,
  .profile,
  .service-list-plain{
    grid-template-columns:1fr;
  }

  .service--featured{
    grid-column:auto;
  }
}

@media (max-width: 860px){
  .topbar__inner{
    flex-direction:column;
    align-items:flex-start;
  }

  .nav-toggle{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    padding:10px 14px;
    border:1px solid var(--line-dark);
    background:#fff;
  }

  .site-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    display:none;
    flex-direction:column;
    align-items:flex-start;
    background:#fff;
    border-bottom:1px solid var(--line);
    padding:16px 20px;
  }

  .site-nav.is-open{
    display:flex;
  }

  .header__inner{
    position:relative;
  }

  .footer__inner,
  .footer__bottom{
    flex-direction:column;
    align-items:flex-start;
  }

  .footer__meta--right{
    text-align:left;
  }
}


/* =========================================================
   18. Responsive : Mobile
========================================================= */
@media (max-width: 680px){
  .service-heading-like-image h2{
    font-size:34px;
  }

  .service-feature-image-like__card,
  .service-list-stack__item{
    padding:22px 18px;
    border-radius:18px;
  }

  .accordion--row summary{
    padding-right:24px;
  }
}

@media (max-width: 640px){
  body{
    font-size:16px;
  }

  .container,
  .narrow{
    width:min(calc(100% - 28px), var(--max));
  }

  .hero--city{
    min-height:auto;
  }

  .hero__bg{
    background:
      linear-gradient(
        to bottom,
        rgba(255,255,255,0.96) 0%,
        rgba(255,255,255,0.92) 28%,
        rgba(255,255,255,0.86) 52%,
        rgba(255,255,255,0.78) 76%,
        rgba(255,255,255,0.70) 100%
      ),
      url("../../images/hero-city.jpg") no-repeat center center / cover;
  }

  .hero__inner{
    padding:64px 20px 56px;
  }

  .hero__content{
    max-width:none;
  }

  .hero__label{
    margin-bottom:22px;
    font-size:11px;
    line-height:1.5;
  }

  .hero h1{
    font-size:clamp(30px, 10vw, 42px);
    line-height:1.35;
  }

  .hero__line{
    margin:22px 0;
  }

  .hero__text p{
    font-size:16px;
    line-height:1.9;
  }

  .hero__actions,
  .contact-cta__actions{
    flex-direction:column;
    justify-content:flex-start;
  }

  .btn{
    width:100%;
    min-width:0;
    font-size:15px;
  }

  .section{
    padding:56px 0;
  }

  .lead{
    font-size:18px;
  }

  .site-brand__text{
    font-size:14px;
  }

  .contact-form label{
    font-size:16px;
  }

  .required{
    font-size:inherit;
  }

  .form-note,
  .recaptcha-note,
  .note,
  .footer__meta{
    font-size:14px;
  }

  .office-summary .office-table div,
  .office-table div{
    display:block;
    grid-template-columns:none;
    gap:0;
    padding:14px 0;
  }

  .office-box,
  .office-summary{
    padding:20px 16px;
    overflow:hidden;
  }

  .office-table dt{
    margin:0 0 4px;
    font-size:14px;
    font-weight:700;
    color:var(--accent);
  }

  .office-table dd{
    margin:0;
    font-size:16px;
    line-height:1.8;
    overflow-wrap:anywhere;
    word-break:normal;
  }

  .office-table dd a{
    overflow-wrap:anywhere;
    word-break:break-all;
  }
}


/* =========================================================
   19. Topbar : Mobile JP/EN only
========================================================= */
@media (max-width: 640px){
  .topbar{
    font-size:12px;
  }

  .topbar__inner{
    flex-direction:row;
    justify-content:flex-end;
    align-items:center;
    gap:10px;
    padding:8px 0;
  }

  .topbar__contact{
    display:none;
  }

  .topbar__links{
    display:flex;
    gap:10px;
    margin-left:auto;
  }

  .topbar__social{
    display:none;
  }

  .topbar__lang{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-width:34px;
    padding:4px 8px;
    border:1px solid var(--accent-light);
    border-radius:999px;
    background:#fff;
    color:var(--accent);
    line-height:1.2;
  }

  .topbar__lang.is-current{
    background:var(--accent);
    border-color:var(--accent);
    color:#fff;
  }
}

/* =========================================================
   reCAPTCHA
========================================================= */
.recaptcha-box{
  display:flex;
  justify-content:center;
  width:100%;
  margin:16px 0 20px;
}

.recaptcha-box > div{
  margin:0 auto;
}

/* Mobile */
@media (max-width: 640px){
  .recaptcha-box{
    max-width:100%;
    overflow:hidden;
    justify-content:center;
  }

  .recaptcha-box > div{
    transform:scale(.94);
    transform-origin:center top;
  }
}

/* =========================================================
   Form validation
========================================================= */
.contact-form input.is-error,
.contact-form textarea.is-error{
  border-color:#b00020;
  background:#fff7f7;
}

.contact-form input.is-error::placeholder,
.contact-form textarea.is-error::placeholder{
  color:#b00020;
  opacity:1;
}