/* =========================================================
   Base / Variables
========================================================= */
:root{
  --color-bg:#ffffff;
  --color-ink:#171412;
  --color-ink-soft:#4a4541;
  --color-gray:#78716c;
  --color-line:#e7e3df;
  --color-surface:#faf8f6;
  --color-accent:#a8461f;
  --color-accent-dark:#832f11;
  --font-serif:'Shippori Mincho', 'Noto Serif JP', serif;
  --font-sans:'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Hiragino Kaku Gothic ProN', sans-serif;
  --max-w:1120px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  color:var(--color-ink);
  background:var(--color-bg);
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  font-feature-settings:"palt";
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;margin:0;letter-spacing:.02em;}
p{margin:0;}
.wrap{max-width:var(--max-w);margin:0 auto;padding:0 32px;}

/* =========================================================
   Header
========================================================= */
.site-header{
  position:fixed;top:0;left:0;right:0;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(8px);
  border-bottom:1px solid var(--color-line);
  z-index:1000;
}
.site-header .wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:74px;
}
.logo{
  font-family:var(--font-serif);
  font-size:16px;
  letter-spacing:.04em;
  font-weight:600;
  white-space:nowrap;
}
.logo span{color:var(--color-accent);}
.main-nav{display:flex;align-items:center;gap:40px;}
.main-nav a{
  font-size:13px;
  letter-spacing:.08em;
  color:var(--color-ink-soft);
  padding:6px 0;
  border-bottom:1px solid transparent;
  transition:color .2s ease, border-color .2s ease;
}
.main-nav a:hover{color:var(--color-ink);border-color:var(--color-ink);}
.header-cta{
  font-size:13px;
  letter-spacing:.06em;
  padding:11px 24px;
  border:1px solid var(--color-ink);
  border-radius:2px;
  white-space:nowrap;
  transition:background .2s ease, color .2s ease;
}
.header-cta:hover{background:var(--color-ink);color:#fff;}
.nav-toggle{
  display:none;
  width:32px;height:24px;position:relative;border:none;background:none;cursor:pointer;padding:0;
}
.nav-toggle span{
  position:absolute;left:0;right:0;height:1px;background:var(--color-ink);transition:.25s ease;
}
.nav-toggle span:nth-child(1){top:0;}
.nav-toggle span:nth-child(2){top:11px;}
.nav-toggle span:nth-child(3){top:22px;}
.nav-toggle.active span:nth-child(1){transform:translateY(11px) rotate(45deg);}
.nav-toggle.active span:nth-child(2){opacity:0;}
.nav-toggle.active span:nth-child(3){transform:translateY(-11px) rotate(-45deg);}

/* =========================================================
   Section generic
========================================================= */
section{padding:140px 0;}
.eyebrow{
  display:block;
  font-size:12px;
  letter-spacing:.24em;
  color:var(--color-accent);
  font-weight:600;
  margin-bottom:22px;
}
.section-head{max-width:760px;margin-bottom:80px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
h2.headline{
  font-size:clamp(28px,4vw,44px);
  line-height:1.55;
  color:var(--color-ink);
}
.section-lead{
  margin-top:24px;
  font-size:16px;
  color:var(--color-ink-soft);
  line-height:2;
}

/* =========================================================
   Hero
========================================================= */
.hero{
  position:relative;
  min-height:680px;
  display:flex;
  align-items:center;
  padding:190px 0 120px;
  overflow:hidden;
  isolation:isolate;
}
.hero-bg{
  position:absolute;
  inset:0;
  z-index:-1;
}
.hero-bg img{
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:30% 75%;
}
.hero-overlay{
  position:absolute;
  inset:0;
  background:rgba(8,7,6,.82);
}
.hero-inner{
  position:relative;
  z-index:1;
  max-width:760px;
}
.eyebrow-light{color:#f0d9c8;}
.hero-title-light{
  font-size:clamp(30px,4.6vw,50px);
  line-height:1.65;
  color:#ffffff;
  text-shadow:0 2px 18px rgba(0,0,0,.25);
}
.hero-desc-light{
  color:rgba(255,255,255,.88);
  max-width:560px;
}
.hero-note-light{color:rgba(255,255,255,.7);}
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  letter-spacing:.06em;
  padding:18px 38px;
  border-radius:2px;
  border:1px solid var(--color-accent);
  background:var(--color-accent);
  color:#fff;
  transition:background .2s ease, border-color .2s ease, transform .15s ease;
}
.btn:hover{background:var(--color-accent-dark);border-color:var(--color-accent-dark);transform:translateY(-1px);}
.btn-outline{
  background:transparent;
  color:var(--color-ink);
  border:1px solid var(--color-ink);
}
.btn-outline:hover{background:var(--color-ink);color:#fff;}
.hero-cta{margin-top:48px;}
.hero-note{
  margin-top:20px;
  font-size:12.5px;
  color:var(--color-gray);
  letter-spacing:.03em;
}

/* =========================================================
   Services
========================================================= */
.services{background:var(--color-surface);}
.service-list{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--color-line);
  border:1px solid var(--color-line);
}
.service-item{
  background:var(--color-surface);
  padding:52px 40px;
}
.service-num{
  font-family:var(--font-serif);
  font-size:13px;
  font-weight:600;
  color:var(--color-accent);
  letter-spacing:.06em;
  margin-bottom:28px;
  display:block;
}
.service-item h3{
  font-size:21px;
  line-height:1.6;
  margin-bottom:20px;
  color:var(--color-ink);
}
.service-item p{
  font-size:14.5px;
  color:var(--color-ink-soft);
  line-height:1.95;
}

/* =========================================================
   Results
========================================================= */
.case{
  border-top:1px solid var(--color-line);
  padding:64px 0;
  display:grid;
  grid-template-columns:.9fr 1.3fr;
  gap:56px;
}
.case:last-child{border-bottom:1px solid var(--color-line);}
.case-info .case-tag{
  font-size:12px;
  letter-spacing:.1em;
  color:var(--color-gray);
  margin-bottom:14px;
  display:block;
}
.case-info h3{
  font-size:22px;
  color:var(--color-ink);
  margin-bottom:18px;
  line-height:1.6;
}
.case-info .case-support{
  display:inline-block;
  font-size:12.5px;
  color:var(--color-accent);
  border:1px solid var(--color-accent);
  border-radius:2px;
  padding:4px 12px;
  margin-bottom:20px;
}
.case-info p{
  font-size:14.5px;
  color:var(--color-ink-soft);
  line-height:2;
}
.case-numbers{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  gap:44px;
}
.case-stat{min-width:120px;}
.case-stat .num{
  font-family:var(--font-serif);
  font-size:clamp(36px,4vw,54px);
  color:var(--color-ink);
  line-height:1;
  display:block;
}
.case-stat .label{
  margin-top:10px;
  font-size:12.5px;
  color:var(--color-gray);
  letter-spacing:.04em;
}
.case-note{
  margin-top:26px;
  font-size:13.5px;
  color:var(--color-ink-soft);
  border-top:1px dashed var(--color-line);
  padding-top:20px;
}

/* =========================================================
   Approach
========================================================= */
.approach{background:var(--color-surface);}
.approach-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:80px;
  align-items:start;
}
.approach-strong{
  font-size:clamp(20px,2.4vw,26px);
  color:var(--color-ink);
  line-height:1.8;
  margin-bottom:28px;
}
.approach-body p{
  font-size:15px;
  color:var(--color-ink-soft);
  line-height:2.05;
  margin-bottom:20px;
}
.flow{
  list-style:none;
  margin:36px 0 0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:0;
  font-size:13.5px;
  color:var(--color-ink);
  align-items:center;
}
.flow li{
  padding:10px 0;
  display:flex;
  align-items:center;
}
.flow li:not(:last-child)::after{
  content:"→";
  margin:0 14px;
  color:var(--color-accent);
}
.approach-banner{
  margin-top:120px;
  text-align:center;
  padding-top:80px;
  border-top:1px solid var(--color-line);
}
.approach-banner p{
  font-family:var(--font-serif);
  font-size:clamp(24px,4vw,40px);
  line-height:1.7;
  color:var(--color-ink);
}

/* =========================================================
   About
========================================================= */
.about-grid{
  display:grid;
  grid-template-columns:.85fr 1.15fr;
  gap:72px;
  align-items:start;
}
.about-photo img{
  width:100%;
  aspect-ratio:21 / 20;
  object-fit:cover;
  object-position:center top;
  border-radius:2px;
}
.about-photo-cap{
  margin-top:18px;
  font-size:12.5px;
  color:var(--color-gray);
  display:flex;
  justify-content:space-between;
}
.about-name{
  font-family:var(--font-serif);
  font-size:22px;
  color:var(--color-ink);
}
.about-role{
  margin-top:8px;
  font-size:13.5px;
  color:var(--color-accent);
  letter-spacing:.03em;
}
.about-quote{
  font-family:var(--font-serif);
  font-size:clamp(19px,2.2vw,24px);
  line-height:1.85;
  color:var(--color-ink);
  margin:36px 0 34px;
  padding-left:22px;
  border-left:2px solid var(--color-accent);
}
.about-body p{
  font-size:15px;
  color:var(--color-ink-soft);
  line-height:2.05;
  margin-bottom:22px;
}

/* =========================================================
   Contact
========================================================= */
.contact-section{background:var(--color-surface);}
.contact-top{
  max-width:760px;
  margin:0 auto 76px;
  text-align:center;
}
.diagnosis-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1px;
  background:var(--color-line);
  border:1px solid var(--color-line);
  margin-bottom:64px;
}
.diagnosis-item{
  background:#fff;
  padding:32px 34px;
}
.diagnosis-item .d-num{
  font-family:var(--font-serif);
  font-size:13px;
  color:var(--color-accent);
  letter-spacing:.06em;
}
.diagnosis-item h4{
  font-size:16.5px;
  color:var(--color-ink);
  margin:12px 0 10px;
  font-weight:600;
  font-family:var(--font-sans);
}
.diagnosis-item p{
  font-size:13.5px;
  color:var(--color-ink-soft);
  line-height:1.85;
}
.contact-cta-box{
  text-align:center;
  padding:64px 40px;
  background:#fff;
  border:1px solid var(--color-line);
}
.contact-cta-box p.lead{
  font-size:15px;
  color:var(--color-ink-soft);
  margin-bottom:32px;
  line-height:1.95;
}
.contact-cta-box .btn{padding:20px 48px;font-size:15px;}

/* =========================================================
   Footer
========================================================= */
.site-footer{
  border-top:1px solid var(--color-line);
  padding:48px 0;
}
.site-footer .wrap{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:16px;
}
.footer-logo{
  font-family:var(--font-serif);
  font-size:15px;
  letter-spacing:.1em;
}
.footer-copy{
  font-size:12px;
  color:var(--color-gray);
}

/* =========================================================
   Contact page (contact.html)
========================================================= */
.contact-page-hero{
  padding:170px 0 70px;
  border-bottom:1px solid var(--color-line);
}
.contact-page-hero .eyebrow{margin-bottom:22px;}
.contact-page-hero h1{
  font-size:clamp(28px,4vw,40px);
  line-height:1.6;
}
.contact-page-hero p{
  margin-top:24px;
  font-size:15px;
  color:var(--color-ink-soft);
  max-width:620px;
  line-height:2;
}
.form-section{padding:90px 0 140px;}
.form-layout{
  display:grid;
  grid-template-columns:.9fr 1.4fr;
  gap:72px;
}
.form-side h3{
  font-size:18px;
  color:var(--color-ink);
  margin-bottom:20px;
}
.form-side ul{
  list-style:none;
  margin:0 0 40px;
  padding:0;
}
.form-side li{
  font-size:14px;
  color:var(--color-ink-soft);
  line-height:1.9;
  padding:14px 0;
  border-top:1px solid var(--color-line);
}
.form-side li:last-child{border-bottom:1px solid var(--color-line);}
.form-note{
  font-size:12.5px;
  color:var(--color-gray);
  line-height:1.9;
}
.contact-form{
  display:flex;
  flex-direction:column;
  gap:26px;
}
.form-row{display:flex;flex-direction:column;gap:10px;}
.form-row label{
  font-size:13px;
  color:var(--color-ink);
  letter-spacing:.03em;
}
.form-row label .req{
  color:var(--color-accent);
  font-size:11px;
  margin-left:6px;
}
.form-row input,
.form-row select,
.form-row textarea{
  font-family:var(--font-sans);
  font-size:15px;
  padding:14px 16px;
  border:1px solid var(--color-line);
  border-radius:2px;
  background:#fff;
  color:var(--color-ink);
  outline:none;
  transition:border-color .2s ease;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus{border-color:var(--color-accent);}
.form-row textarea{resize:vertical;min-height:150px;}
.form-submit{
  margin-top:10px;
  align-self:flex-start;
}
.form-status{
  margin-top:18px;
  font-size:13.5px;
}
.form-status.success{color:#3f6b3f;}
.form-status.error{color:var(--color-accent);}
.back-link{
  display:inline-block;
  margin-top:36px;
  font-size:13px;
  color:var(--color-ink-soft);
  border-bottom:1px solid var(--color-line);
}

/* =========================================================
   Responsive
========================================================= */
@media (max-width:960px){
  .hero{padding:150px 0 90px;min-height:560px;}
  .service-list{grid-template-columns:1fr;}
  .case{grid-template-columns:1fr;gap:32px;}
  .approach-grid{grid-template-columns:1fr;gap:40px;}
  .about-grid{grid-template-columns:1fr;gap:40px;}

  .diagnosis-list{grid-template-columns:1fr;}
  .form-layout{grid-template-columns:1fr;gap:48px;}
  section{padding:96px 0;}
  .section-head{margin-bottom:56px;}
}

@media (max-width:760px){
  .main-nav{
    position:fixed;
    top:74px;left:0;right:0;bottom:0;
    background:#fff;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    padding:20px 32px 40px;
    transform:translateX(100%);
    transition:transform .25s ease;
    overflow-y:auto;
  }
  .main-nav.open{transform:translateX(0);}
  .main-nav a{
    width:100%;
    padding:18px 0;
    border-bottom:1px solid var(--color-line);
    font-size:15px;
  }
  .header-cta{display:none;}
  .main-nav .mobile-cta{
    display:inline-flex;
    margin-top:24px;
    padding:16px 28px;
    background:var(--color-accent);
    color:#fff;
    border:none;
    border-radius:2px;
    font-size:14px;
    width:100%;
    justify-content:center;
  }
  .nav-toggle{display:block;}
  .wrap{padding:0 22px;}
  .hero{padding:130px 0 70px;min-height:100vh;}
  .hero-desc-light{max-width:none;}
  section{padding:76px 0;}
  h2.headline{font-size:26px;}
  .approach-banner{margin-top:70px;padding-top:56px;}
  .case-numbers{gap:28px;}
}