/* ── MKPartners Global Stylesheet v2 ── */
@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@200;300;400;500&family=Noto+Sans+JP:wght@300;400&family=Cormorant+Garamond:ital,wght@0,300;0,400;1,300&display=swap');

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

:root{
  --ink:#16120e;
  --ink-soft:#4a4540;
  --ink-faint:#8a847c;
  --paper:#f7f4ee;
  --paper-warm:#efe9de;
  --paper-dark:#e6dfd3;
  --rule:#d6cfc4;
  --accent:#2a4a3e;
  --accent-mid:#3d6b5c;
  --accent-light:#e3eeea;
  --accent-bright:#4a8a72;
  --dark:#141210;
  --dark-soft:#1c1916;
  --cormorant:'Cormorant Garamond',serif;
  --serif:'Noto Serif JP',serif;
  --sans:'Noto Sans JP',sans-serif;
  --ease-out-expo:cubic-bezier(0.16,1,0.3,1);
}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:var(--paper);color:var(--ink);font-family:var(--sans);font-weight:300;line-height:1.75;font-size:15px;overflow-x:hidden}

/* ── SCROLL PROGRESS ── */
.scroll-progress{position:fixed;top:0;left:0;height:2px;background:var(--accent);z-index:999;transition:width 0.08s linear;width:0;pointer-events:none}

/* ── NAV ── */
nav{
  position:fixed;top:0;left:0;right:0;z-index:300;
  display:flex;align-items:center;justify-content:space-between;
  padding:1.25rem 4rem;
  transition:background 0.45s,padding 0.45s,border-color 0.45s,box-shadow 0.45s;
  border-bottom:1px solid transparent;
}
nav.scrolled{
  background:rgba(247,244,238,0.96);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom-color:var(--rule);
  padding:0.9rem 4rem;
  box-shadow:0 1px 24px rgba(22,18,14,0.06);
}
nav.light{
  background:rgba(247,244,238,0.96);
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border-bottom-color:var(--rule);
  padding:0.9rem 4rem;
}
nav.dark-nav{background:transparent;border-bottom-color:transparent}
nav.dark-nav.scrolled{background:rgba(247,244,238,0.96);border-bottom-color:var(--rule)}

.nav-logo{text-decoration:none;display:flex;align-items:center}
.nav-logo-wordmark{
  font-family:var(--cormorant);font-weight:300;font-size:22px;
  letter-spacing:0.06em;line-height:1;
  color:var(--ink);transition:color 0.3s;
}
nav.dark-nav .nav-logo-wordmark{color:var(--ink)}

.nav-links{display:flex;gap:2.25rem;align-items:center}
.nav-links a{
  font-size:12px;letter-spacing:0.1em;text-decoration:none;
  color:var(--ink-soft);transition:color 0.2s;position:relative;
}
.nav-links a::after{
  content:'';position:absolute;bottom:-3px;left:0;right:0;
  height:1px;background:var(--accent);
  transform:scaleX(0);transition:transform 0.3s var(--ease-out-expo);transform-origin:left;
}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a:hover,.nav-links a.active{color:var(--accent)}

.hamburger{display:none;background:none;border:none;cursor:pointer;flex-direction:column;gap:5px;padding:4px}
.hamburger span{display:block;width:22px;height:1px;background:var(--ink);transition:all 0.3s}
.hamburger.open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.hamburger.open span:nth-child(2){opacity:0;transform:scaleX(0)}
.hamburger.open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.mobile-menu{
  display:none;position:fixed;inset:0;
  background:var(--paper);z-index:250;
  flex-direction:column;align-items:center;justify-content:center;gap:2rem;
}
.mobile-menu.open{display:flex}
.mobile-menu a{
  font-family:var(--serif);font-size:1.6rem;font-weight:300;
  color:var(--ink);text-decoration:none;letter-spacing:0.06em;
  transition:color 0.2s;
}
.mobile-menu a:hover{color:var(--accent)}

/* ── PAGE HEADER ── */
.page-header{
  background:var(--dark);padding:10rem 4rem 6rem;
  position:relative;overflow:hidden;
}
.page-header::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse 70% 60% at 60% 100%,rgba(42,74,62,0.22) 0%,transparent 70%);
  pointer-events:none;
}
.page-header-inner{max-width:1100px;margin:0 auto;position:relative;z-index:1}
.page-eyebrow{
  font-size:12px;letter-spacing:0.18em;color:rgba(247,244,238,0.38);
  text-transform:uppercase;margin-bottom:1.75rem;
  display:flex;align-items:center;gap:1rem;
}
.page-eyebrow::before{content:'';display:block;width:24px;height:1px;background:rgba(247,244,238,0.25)}
.page-h1{
  font-family:var(--serif);font-weight:200;
  font-size:clamp(2.2rem,4.5vw,3.8rem);
  line-height:1.45;letter-spacing:0.03em;color:#f7f4ee;margin-bottom:1.25rem;
}
.page-h1 em{font-style:normal;color:rgba(200,225,210,0.88)}
.page-lead{font-family:var(--serif);font-weight:300;font-size:1rem;color:rgba(247,244,238,0.48);line-height:1.75;max-width:540px}

/* ── SECTIONS ── */
.sec{padding:7rem 4rem;max-width:1100px;margin:0 auto}
.sec-full{padding:7rem 4rem}
.sec-h2{font-family:var(--serif);font-weight:300;font-size:clamp(1.5rem,2.5vw,2.2rem);line-height:1.55;letter-spacing:0.03em;margin-bottom:1.25rem}
.sec-h2.light{color:#f7f4ee;font-weight:200}
.sec-h3{font-family:var(--serif);font-weight:300;font-size:1.1rem;line-height:1.55;letter-spacing:0.03em;margin-bottom:0.75rem}
.sec-body p{color:var(--ink-soft);line-height:1.75;font-size:14.5px}
.sec-body p+p{margin-top:0.9rem}
.sec-body.light p{color:rgba(247,244,238,0.52)}

.sec-label{
  font-size:12px;letter-spacing:0.18em;color:var(--ink-faint);
  text-transform:uppercase;margin-bottom:2.5rem;
  display:flex;align-items:center;gap:0.9rem;
}
.sec-label::before{content:'';display:block;width:20px;height:1px;background:var(--ink-faint)}
.sec-label.light{color:rgba(247,244,238,0.3);font-size:12px;letter-spacing:0.18em}
.sec-label.light::before{background:rgba(247,244,238,0.22)}

.divider{height:1px;background:var(--rule);max-width:1100px;margin:0 auto}
.divider-full{height:1px;background:var(--rule)}

/* ── ASIDE QUOTE ── */
.aside-quote{border-left:2px solid var(--accent);padding:1.5rem 2rem;background:var(--accent-light);margin:2.5rem 0}
.aside-quote p{font-family:var(--serif);font-size:0.95rem;color:var(--accent);line-height:1.75;border-color:rgba(200,225,210,0.4)}
.aside-quote.dark p{color:rgba(247,244,238,0.72)}

/* ── BUTTONS ── */
.btn-primary{
  display:inline-flex;align-items:center;gap:0.9rem;
  background:var(--accent);color:#f7f4ee;
  font-family:var(--serif);font-size:0.95rem;
  padding:1rem 2.5rem;cursor:pointer;letter-spacing:0.1em;
  text-decoration:none;border:none;
  transition:background 0.3s,transform 0.2s;
  position:relative;overflow:hidden;
}
.btn-primary::before{
  content:'';position:absolute;inset:0;
  background:rgba(255,255,255,0.08);
  transform:translateX(-100%);transition:transform 0.4s var(--ease-out-expo);
}
.btn-primary:hover{background:#1e3830;transform:translateY(-1px)}
.btn-primary:hover::before{transform:translateX(0)}

.contact-btn{
  display:inline-flex;align-items:center;gap:0.9rem;
  border:1px solid rgba(247,244,238,0.32);color:#f7f4ee;
  font-family:var(--serif);font-size:0.95rem;
  padding:1rem 2.5rem;cursor:pointer;letter-spacing:0.1em;
  transition:all 0.3s;text-decoration:none;position:relative;overflow:hidden;
}
.contact-btn::before{
  content:'';position:absolute;inset:0;
  background:rgba(42,74,62,0.28);
  transform:translateX(-100%);transition:transform 0.4s var(--ease-out-expo);
}
.contact-btn:hover::before{transform:translateX(0)}
.contact-btn:hover{border-color:rgba(247,244,238,0.65)}
.contact-btn span{position:relative;z-index:1}

.contact-btn.on-light{
  background:var(--accent);
  color:#f7f4ee;
  border-color:rgba(42,74,62,0.35);
}
.contact-btn.on-light::before{background:rgba(42,74,62,0.07)}
.contact-btn.on-light:hover{border-color:var(--accent)}


/* ── ライト背景用ボタン（視認性高） ── */
.btn-solid {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--accent);
  color: #f7f4ee;
  font-family: var(--serif);
  font-size: 0.92rem;
  letter-spacing: 0.1em;
  padding: 0.95rem 2.4rem;
  text-decoration: none;
  border: 1.5px solid var(--accent);
  transition: background 0.25s, transform 0.18s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}
.btn-solid::before {
  content: '';
  position: absolute; inset: 0;
  background: rgba(255,255,255,0.07);
  transform: translateX(-100%);
  transition: transform 0.4s var(--ease-out-expo);
}
.btn-solid:hover { background: #1e3830; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(42,74,62,0.22); }
.btn-solid:hover::before { transform: translateX(0); }
.btn-solid span { position: relative; z-index: 1; }

/* ── FOOTER ── */
footer{
  background:var(--dark);
  border-top:1px solid rgba(247,244,238,0.08);
  padding:2.75rem 4rem;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:1.25rem;
}
.footer-logo{font-family:var(--cormorant);font-size:17px;font-weight:300;color:rgba(247,244,238,0.25);letter-spacing:0.07em}
.footer-links{display:flex;gap:2rem;flex-wrap:wrap}
.footer-links a{font-size:11px;letter-spacing:0.1em;color:rgba(247,244,238,0.2);text-decoration:none;transition:color 0.2s}
.footer-links a:hover{color:rgba(247,244,238,0.55)}
.footer-copy{font-size:11px;color:rgba(247,244,238,0.14);letter-spacing:0.08em}

/* ── REVEAL ── */
.reveal{opacity:0;transform:translateY(28px);transition:opacity 1s var(--ease-out-expo),transform 1s var(--ease-out-expo)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-left{opacity:0;transform:translateX(-28px);transition:opacity 1s var(--ease-out-expo),transform 1s var(--ease-out-expo)}
.reveal-left.visible{opacity:1;transform:translateX(0)}
.reveal-scale{opacity:0;transform:scale(0.96);transition:opacity 1s var(--ease-out-expo),transform 1s var(--ease-out-expo)}
.reveal-scale.visible{opacity:1;transform:scale(1)}
.d1{transition-delay:0.1s}.d2{transition-delay:0.2s}.d3{transition-delay:0.3s}
.d4{transition-delay:0.4s}.d5{transition-delay:0.5s}.d6{transition-delay:0.6s}

/* ── MOBILE ── */
@media(max-width:900px){
  nav,nav.scrolled,nav.light{padding:1rem 1.75rem}
  .nav-links{display:none}
  .hamburger{display:flex}
  .page-header{padding:8rem 1.75rem 5rem}
  .sec{padding:5rem 1.75rem}
  .sec-full{padding:5rem 1.75rem}
  footer{padding:2rem 1.75rem;flex-direction:column;align-items:flex-start}
}