:root{
  --paper:#F7F4ED;
  --paper-line:#E4DDC9;
  --blue:#2B5C8A;
  --blue-light:#7FA8C9;
  --blue-pale:#E7EEF4;
  --brass:#C9A227;
  --ink:#23282E;
  --ink-soft:#5B6470;
  --white:#FFFFFF;
  --radius:2px;
}

*{margin:0;padding:0;box-sizing:border-box;}

html{scroll-behavior:smooth;}

body{
  font-family:'Space Grotesk', sans-serif;
  background:var(--paper);
  color:var(--ink);
  line-height:1.6;
  overflow-x:hidden;
}

.blueprint-bg{
  background-image:
    linear-gradient(var(--paper-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--paper-line) 1px, transparent 1px);
  background-size:40px 40px;
}

h1,h2,h3,h4{
  font-family:'Oswald', sans-serif;
  text-transform:uppercase;
  letter-spacing:0.04em;
  font-weight:600;
  color:var(--ink);
}

.mono{
  font-family:'JetBrains Mono', monospace;
  letter-spacing:0.05em;
}

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

/* ===== HEADER ===== */
header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:100;
  background:rgba(247,244,237,0.9);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--paper-line);
}
.nav-wrap{
  max-width:1200px;
  margin:0 auto;
  padding:18px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
@media (max-width:780px){
  .nav-wrap{padding:14px 16px;}
  .logo{font-size:0.95rem;}
  .logo .brand-text{display:none;}
  .nav-wrap > a.btn{
    padding:9px 14px;
    font-size:0.7rem;
  }
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:'Oswald', sans-serif;
  font-weight:700;
  font-size:1.1rem;
  letter-spacing:0.06em;
  text-transform:uppercase;
}
.logo-mark{
  width:34px;height:34px;
  border:2px solid var(--blue);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-family:'Oswald',sans-serif;
  font-size:0.6rem;
  font-weight:700;
  color:var(--blue);
  flex-shrink:0;
}
nav ul{
  display:flex;
  gap:32px;
  list-style:none;
}
nav a{
  font-family:'JetBrains Mono', monospace;
  font-size:0.78rem;
  text-transform:uppercase;
  letter-spacing:0.08em;
  color:var(--ink-soft);
  transition:color 0.2s;
  position:relative;
  padding-bottom:4px;
}
nav a:hover, nav a:focus-visible{color:var(--blue);}
nav a.active{color:var(--blue);}
nav a::after{
  content:'';
  position:absolute;
  left:0;bottom:0;
  width:0;height:1px;
  background:var(--brass);
  transition:width 0.25s;
}
nav a:hover::after, nav a.active::after{width:100%;}

/* ===== HAMBURGER (mobile) ===== */
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:38px;height:38px;
  border:1px solid var(--paper-line);
  background:var(--white);
  border-radius:var(--radius);
  cursor:pointer;
}
.nav-toggle span{
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  margin:0 auto;
  transition:transform 0.25s, opacity 0.25s;
}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

@media (max-width:780px){
  .nav-toggle{display:flex;}
  nav{
    display:block;
    position:absolute;
    top:100%;
    left:0;right:0;
    background:var(--paper);
    border-bottom:1px solid var(--paper-line);
    max-height:0;
    overflow:hidden;
    transition:max-height 0.3s ease;
  }
  nav.open{max-height:320px;}
  nav ul{
    flex-direction:column;
    gap:0;
    padding:8px 24px 16px;
  }
  nav ul li{
    border-bottom:1px solid var(--paper-line);
  }
  nav ul li:last-child{border-bottom:none;}
  nav a{
    display:block;
    padding:14px 0;
  }
  nav a::after{display:none;}
  header{position:fixed;}
  .nav-wrap{position:relative;}
}

/* ===== PAGE HERO (sub-pages) ===== */
.page-hero{
  padding:160px 24px 60px;
  max-width:1200px;
  margin:0 auto;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:'JetBrains Mono', monospace;
  font-size:0.75rem;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--blue);
  margin-bottom:24px;
}
.eyebrow::before{
  content:'';
  width:28px;height:1px;
  background:var(--brass);
}
.page-hero h1{
  font-size:clamp(2.4rem, 5.5vw, 4rem);
  line-height:1.1;
  margin-bottom:18px;
}
.page-hero h1 span{color:var(--blue);}
.page-hero p{
  color:var(--ink-soft);
  font-size:1.05rem;
  max-width:620px;
}

/* ===== HERO (homepage) ===== */
.hero{
  position:relative;
  padding:160px 24px 100px;
  max-width:1200px;
  margin:0 auto;
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:60px;
  align-items:center;
}
@media (max-width:900px){
  .hero{grid-template-columns:1fr; padding-top:130px; gap:40px;}
}
.hero h1{
  font-size:clamp(2.6rem, 6vw, 4.6rem);
  line-height:1.05;
  margin-bottom:24px;
}
.hero h1 span{color:var(--blue);}
.hero-desc{
  font-size:1.05rem;
  color:var(--ink-soft);
  max-width:480px;
  margin-bottom:32px;
}

.scope-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:36px;
}
.scope-chip{
  font-family:'JetBrains Mono', monospace;
  font-size:0.72rem;
  text-transform:uppercase;
  letter-spacing:0.06em;
  border:1px solid var(--paper-line);
  background:var(--white);
  padding:8px 14px;
  border-radius:var(--radius);
  color:var(--ink-soft);
}

.cta-row{display:flex; gap:16px; flex-wrap:wrap;}
.btn{
  font-family:'JetBrains Mono', monospace;
  font-size:0.8rem;
  text-transform:uppercase;
  letter-spacing:0.08em;
  padding:15px 28px;
  border-radius:var(--radius);
  transition:all 0.25s;
  display:inline-flex;
  align-items:center;
  gap:8px;
  border:1px solid transparent;
  cursor:pointer;
  background:none;
  font-weight:500;
}
.btn-primary{
  background:var(--blue);
  color:var(--paper);
  border:1px solid var(--blue);
}
.btn-primary:hover{
  background:var(--ink);
  border-color:var(--ink);
  transform:translateY(-2px);
}
.btn-ghost{
  background:transparent;
  color:var(--ink);
  border:1px solid var(--ink);
}
.btn-ghost:hover{
  border-color:var(--brass);
  color:var(--brass);
}

/* Hero visual: drawing sheet */
.sheet{
  position:relative;
  background:var(--white);
  border:1px solid var(--paper-line);
  box-shadow:0 30px 60px -30px rgba(43,92,138,0.25);
  aspect-ratio:4/5;
  padding:28px;
  transform:rotate(1.2deg);
}
.sheet::before{
  content:'';
  position:absolute;
  inset:14px;
  border:1px solid var(--blue-light);
}
.sheet-header{
  display:flex;
  justify-content:space-between;
  font-family:'JetBrains Mono', monospace;
  font-size:0.62rem;
  color:var(--blue);
  text-transform:uppercase;
  letter-spacing:0.08em;
  padding-bottom:14px;
  border-bottom:1px solid var(--paper-line);
  margin-bottom:18px;
}
.sheet-body{
  position:relative;
  height:calc(100% - 110px);
}
.sheet-house{
  width:100%;height:100%;
  display:block;
}
.dim-line{
  stroke:var(--blue-light);
  stroke-width:1;
}
.dim-text{
  font-family:'JetBrains Mono', monospace;
  font-size:9px;
  fill:var(--blue);
}
.draw-line{
  stroke:var(--ink);
  stroke-width:1.4;
  fill:none;
  stroke-dasharray:600;
  stroke-dashoffset:600;
  animation:draw 2.6s ease forwards 0.4s;
}
.draw-fill{
  fill:var(--blue-pale);
  opacity:0;
  animation:fadeIn 0.8s ease forwards 2.4s;
}
@keyframes draw{to{stroke-dashoffset:0;}}
@keyframes fadeIn{to{opacity:1;}}
.sheet-footer{
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-family:'JetBrains Mono', monospace;
  font-size:0.62rem;
  color:var(--ink-soft);
  text-transform:uppercase;
  letter-spacing:0.06em;
  padding-top:14px;
  border-top:1px solid var(--paper-line);
  margin-top:14px;
}
.sheet-footer .brass{color:var(--brass); font-weight:700;}

@media (prefers-reduced-motion:reduce){
  .draw-line{animation:none; stroke-dashoffset:0;}
  .draw-fill{animation:none; opacity:1;}
}

/* ===== SECTION GENERIC ===== */
section{
  padding:80px 24px;
  max-width:1200px;
  margin:0 auto;
}
section.tight{padding-top:0;}
.section-head{
  display:flex;
  flex-direction:column;
  gap:14px;
  margin-bottom:56px;
  max-width:640px;
}
.section-num{
  font-family:'JetBrains Mono', monospace;
  font-size:0.78rem;
  color:var(--brass);
  letter-spacing:0.1em;
}
.section-head h2{
  font-size:clamp(1.9rem, 4vw, 2.8rem);
}
.section-head p{
  color:var(--ink-soft);
  font-size:1rem;
}

/* ===== SERVICES GRID ===== */
.services-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(240px,1fr));
  gap:1px;
  background:var(--paper-line);
  border:1px solid var(--paper-line);
}
.service-card{
  background:var(--white);
  padding:36px 28px;
  transition:background 0.25s;
  position:relative;
}
.service-card:hover{background:var(--blue-pale);}
.service-icon{
  width:48px;height:48px;
  margin-bottom:20px;
}
.service-icon svg{width:100%;height:100%;}
.service-card h3{
  font-size:1.05rem;
  margin-bottom:8px;
}
.service-card p{
  font-size:0.88rem;
  color:var(--ink-soft);
}
.service-tag{
  position:absolute;
  top:24px; right:24px;
  font-family:'JetBrains Mono', monospace;
  font-size:0.65rem;
  color:var(--paper-line);
  transition:color 0.25s;
}
.service-card:hover .service-tag{color:var(--blue-light);}

/* ===== DELIVERABLES ===== */
.deliverables{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:24px;
}
.deliv-card{
  border:1px solid var(--paper-line);
  background:var(--white);
  padding:32px 24px;
  position:relative;
  overflow:hidden;
}
.deliv-card::before{
  content:attr(data-code);
  position:absolute;
  top:-18px; right:-10px;
  font-family:'Oswald',sans-serif;
  font-size:5rem;
  font-weight:700;
  color:var(--paper-line);
  line-height:1;
  z-index:0;
}
.deliv-card h3{
  position:relative;
  font-size:1.05rem;
  margin-bottom:10px;
  z-index:1;
}
.deliv-card p{
  position:relative;
  font-size:0.88rem;
  color:var(--ink-soft);
  z-index:1;
}

/* ===== ABOUT / SAKATO STORY ===== */
.about{
  background:var(--blue);
  color:var(--paper);
  border-radius:var(--radius);
  padding:80px 48px;
  position:relative;
  overflow:hidden;
}
.about::before{
  content:'';
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size:40px 40px;
  pointer-events:none;
}
.about-inner{
  position:relative;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:48px;
  align-items:center;
}
@media (max-width:860px){
  .about{padding:56px 28px;}
  .about-inner{grid-template-columns:1fr;}
}
.about h2{color:var(--paper); margin-bottom:18px;}
.about p{color:rgba(247,244,237,0.85); font-size:0.98rem; margin-bottom:14px;}
.about-emblem{
  border:1px solid rgba(247,244,237,0.25);
  padding:32px;
  display:flex;
  flex-direction:column;
  gap:18px;
}
.tagline-item{
  font-family:'JetBrains Mono', monospace;
  font-size:0.85rem;
  line-height:1.7;
  color:var(--brass);
  border-left:2px solid var(--brass);
  padding-left:16px;
}

/* ===== STORY TIMELINE (about page) ===== */
.story-block{
  display:grid;
  grid-template-columns:120px 1fr;
  gap:32px;
  padding:32px 0;
  border-bottom:1px solid var(--paper-line);
}
.story-block:first-child{padding-top:0;}
.story-block:last-child{border-bottom:none;}
@media (max-width:700px){
  .story-block{grid-template-columns:1fr; gap:8px;}
}
.story-label{
  font-family:'JetBrains Mono', monospace;
  font-size:0.72rem;
  text-transform:uppercase;
  letter-spacing:0.12em;
  color:var(--brass);
}
.story-block h3{font-size:1.2rem; margin-bottom:10px;}
.story-block p{color:var(--ink-soft); font-size:0.96rem; max-width:640px;}

/* ===== PORTFOLIO GRID ===== */
.portfolio-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(280px,1fr));
  gap:24px;
}
.portfolio-card{
  border:1px solid var(--paper-line);
  background:var(--white);
  overflow:hidden;
}
.portfolio-thumb{
  aspect-ratio:4/3;
  background:var(--blue-pale);
  position:relative;
  overflow:hidden;
}
.portfolio-thumb svg{width:100%;height:100%;display:block;}
.portfolio-info{
  padding:20px 22px;
}
.portfolio-info .label{
  font-family:'JetBrains Mono', monospace;
  font-size:0.68rem;
  text-transform:uppercase;
  letter-spacing:0.1em;
  color:var(--brass);
  display:block;
  margin-bottom:6px;
}
.portfolio-info h3{font-size:1rem; margin-bottom:6px;}
.portfolio-info p{font-size:0.86rem; color:var(--ink-soft);}

/* ===== CONTACT ===== */
.contact-grid{
  display:grid;
  grid-template-columns:1.2fr 1fr;
  gap:48px;
}
@media (max-width:860px){
  .contact-grid{grid-template-columns:1fr;}
}
.contact-card{
  background:var(--white);
  border:1px solid var(--paper-line);
  padding:40px;
}
.contact-list{list-style:none; margin-top:24px;}
.contact-list li{
  display:flex;
  align-items:center;
  gap:16px;
  padding:18px 0;
  border-bottom:1px solid var(--paper-line);
}
.contact-list li:last-child{border-bottom:none;}
.contact-list .icon{
  width:38px;height:38px;
  flex-shrink:0;
  border:1px solid var(--paper-line);
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  color:var(--blue);
}
.contact-list .label{
  font-family:'JetBrains Mono', monospace;
  font-size:0.68rem;
  text-transform:uppercase;
  letter-spacing:0.1em;
  color:var(--ink-soft);
  display:block;
  margin-bottom:2px;
}
.contact-list .value{
  font-weight:500;
  font-size:0.98rem;
}
.contact-list a.value:hover{color:var(--blue);}

.map-card{
  border:1px solid var(--paper-line);
  background:var(--white);
  display:flex;
  flex-direction:column;
}
.map-visual{
  flex:1;
  background:var(--blue-pale);
  position:relative;
  min-height:240px;
  overflow:hidden;
}
.map-visual svg{width:100%;height:100%;}
.map-caption{
  padding:24px 28px;
  border-top:1px solid var(--paper-line);
}
.map-caption .label{
  font-family:'JetBrains Mono', monospace;
  font-size:0.68rem;
  text-transform:uppercase;
  letter-spacing:0.1em;
  color:var(--brass);
  display:block;
  margin-bottom:6px;
}

/* ===== CONTACT FORM ===== */
.form-card{
  background:var(--white);
  border:1px solid var(--paper-line);
  padding:40px;
}
.form-group{margin-bottom:20px;}
.form-group label{
  display:block;
  font-family:'JetBrains Mono', monospace;
  font-size:0.7rem;
  text-transform:uppercase;
  letter-spacing:0.1em;
  color:var(--ink-soft);
  margin-bottom:8px;
}
.form-group input,
.form-group select,
.form-group textarea{
  width:100%;
  padding:12px 14px;
  border:1px solid var(--paper-line);
  background:var(--paper);
  font-family:'Space Grotesk', sans-serif;
  font-size:0.95rem;
  color:var(--ink);
  border-radius:var(--radius);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus{
  outline:2px solid var(--brass);
  outline-offset:1px;
  border-color:var(--brass);
}
.form-group textarea{resize:vertical; min-height:120px;}
.form-note{
  font-size:0.82rem;
  color:var(--ink-soft);
  margin-top:14px;
}

/* ===== CTA BAND ===== */
.cta-band{
  background:var(--ink);
  color:var(--paper);
  padding:64px 48px;
  text-align:center;
  border-radius:var(--radius);
}
.cta-band h2{color:var(--paper); margin-bottom:14px;}
.cta-band p{color:rgba(247,244,237,0.7); margin-bottom:28px; max-width:520px; margin-left:auto; margin-right:auto;}
.cta-band .cta-row{justify-content:center;}
.cta-band .btn-ghost{color:var(--paper); border-color:rgba(247,244,237,0.4);}
.cta-band .btn-ghost:hover{color:var(--brass); border-color:var(--brass);}

/* ===== FOOTER ===== */
footer{
  border-top:1px solid var(--paper-line);
  padding:40px 24px;
}
.footer-inner{
  max-width:1200px;
  margin:0 auto;
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:16px;
  font-family:'JetBrains Mono', monospace;
  font-size:0.75rem;
  color:var(--ink-soft);
  text-transform:uppercase;
  letter-spacing:0.08em;
}

/* focus visibility */
a:focus-visible, button:focus-visible{
  outline:2px solid var(--brass);
  outline-offset:2px;
}

/* reveal on scroll */
.reveal{
  opacity:0;
  transform:translateY(24px);
  transition:opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible{
  opacity:1;
  transform:translateY(0);
}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1; transform:none; transition:none;}
}