/* ══ 共通CSS（新デザイン：白/赤/黒茶） ══ */
:root{
  --red:#9e6b5a;--brown:#3a2e28;--brown-m:#6b5d55;--tan:#a09890;
  --white:#ffffff;--soft:#fafaf8;--grid:rgba(0,0,0,.03);
  --ff-s:'Noto Serif JP','Hiragino Mincho ProN',serif;
  --ff-l:'Cormorant Garamond',serif;
  --ease:.35s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--ff-s);background:var(--white);color:var(--brown);line-height:1.9;font-size:15px;overflow-x:hidden;padding-bottom:64px}
a{color:inherit;text-decoration:none}ul{list-style:none}img{max-width:100%;display:block}
body::before{content:'';position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:32px 32px}

/* HEADER */
.site-header{position:sticky;top:0;left:0;right:0;z-index:150;display:flex;align-items:center;justify-content:space-between;padding:14px 28px;background:rgba(255,255,255,.9);backdrop-filter:blur(10px);border-bottom:1px solid rgba(0,0,0,.06)}
.logo__main{font-family:var(--ff-l);font-size:18px;font-weight:500;letter-spacing:.1em;color:var(--brown);display:block}
.logo__sub{font-size:9px;letter-spacing:.18em;color:var(--red);display:block;margin-top:2px}
.hbg{display:none;flex-direction:column;justify-content:center;align-items:center;gap:6px;width:40px;height:40px;background:none;border:none;cursor:pointer}
.hbg span{display:block;width:22px;height:1.5px;background:var(--brown);transition:var(--ease)}
.hbg.open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.hbg.open span:nth-child(2){opacity:0;transform:scaleX(0)}
.hbg.open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

/* SIDE NAV */
.side-nav{position:fixed;right:0;top:80px;bottom:64px;z-index:120;display:flex;flex-direction:column;gap:0}
.side-nav__item{writing-mode:vertical-rl;display:flex;align-items:center;justify-content:center;padding:10px 8px;font-family:var(--ff-s);font-size:10px;font-weight:600;letter-spacing:.08em;color:var(--white);background:rgba(138,122,106,.7);cursor:pointer;user-select:none;border-bottom:1px solid rgba(255,255,255,.15);transition:background var(--ease);white-space:nowrap;flex:1}
.side-nav__item:first-child{background:rgba(58,46,40,.6)}
.side-nav__item:last-child{border-bottom:none}
.side-nav__item.active{background:var(--red)}
.side-nav__item:hover:not(.active){background:rgba(58,46,40,.85)}

/* SP MENU */
.menu-overlay{position:fixed;inset:0;z-index:300;background:var(--brown);opacity:0;pointer-events:none;transition:opacity .4s ease;display:flex;flex-direction:column;overflow-y:auto}
.menu-overlay.open{opacity:1;pointer-events:all}
.menu-ov__head{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;border-bottom:1px solid rgba(255,255,255,.1)}
.menu-ov__logo{font-family:var(--ff-l);font-size:17px;letter-spacing:.1em;color:var(--white)}
.menu-close{background:none;border:none;cursor:pointer;color:var(--white);font-family:var(--ff-l);font-size:10px;letter-spacing:.28em;display:flex;align-items:center;gap:10px}
.menu-close__x{position:relative;width:18px;height:18px;display:block}
.menu-close__x::before,.menu-close__x::after{content:'';position:absolute;top:50%;left:0;width:18px;height:1.5px;background:var(--white)}
.menu-close__x::before{transform:rotate(45deg)}.menu-close__x::after{transform:rotate(-45deg)}
.menu-ov__body{flex:1;display:flex;flex-direction:column;justify-content:center;padding:32px 32px 48px;max-width:600px;margin:0 auto;width:100%}
.menu-ov__items a{display:flex;align-items:baseline;gap:12px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.08);color:var(--white);font-size:18px;font-weight:600;letter-spacing:.06em}
.menu-ov__items a .ml-en{font-family:var(--ff-l);font-size:11px;color:var(--red);letter-spacing:.2em;text-transform:uppercase;margin-left:auto}

/* PAGE HERO */
.page-hero{position:relative;z-index:1;padding:100px 80px 60px 60px;background:var(--white)}
.page-hero__en{font-family:var(--ff-l);font-size:clamp(50px,10vw,100px);font-weight:300;color:rgba(58,46,40,.07);letter-spacing:.06em;line-height:1;margin-bottom:-20px}
.page-hero__jp{font-size:clamp(20px,3vw,28px);font-weight:600;color:var(--brown);letter-spacing:.15em;margin-bottom:8px}
.page-hero__rule{width:40px;height:2px;background:var(--red);margin-bottom:16px}
.page-hero__desc{font-size:13px;color:var(--tan);letter-spacing:.1em}

/* CONTENT */
.page-content{position:relative;z-index:1;padding:0 80px 80px 60px;background:var(--white)}
.page-content__inner{max-width:1000px;margin:0 auto}

/* BUTTONS */
.btn-red{display:inline-flex;align-items:center;justify-content:center;padding:14px 28px;background:var(--red);color:var(--white);font-family:var(--ff-l);font-size:11px;letter-spacing:.25em;text-transform:uppercase;transition:opacity var(--ease)}
.btn-red:hover{opacity:.85}
.btn-line{display:inline-flex;align-items:center;gap:10px;padding:14px 28px;background:var(--brown);color:var(--white);font-family:var(--ff-l);font-size:11px;letter-spacing:.25em;text-transform:uppercase;transition:background var(--ease)}
.btn-line:hover{background:var(--red)}
.btn-line::after{content:'→'}

/* STICKY BAR */
.sticky-bar{position:fixed;bottom:0;left:0;right:0;z-index:100;display:flex;height:64px}
.sticky-bar__tel{display:flex;align-items:center;justify-content:center;gap:8px;background:var(--brown);color:var(--white);padding:0 12px;font-family:var(--ff-l);font-size:16px;letter-spacing:.06em;flex:1;border-right:1px solid rgba(255,255,255,.1)}
.sticky-bar__btn{display:flex;align-items:center;justify-content:center;flex:1;font-size:14px;letter-spacing:.1em;font-weight:600;transition:opacity var(--ease);border-right:1px solid rgba(255,255,255,.1)}
.sticky-bar__btn:last-child{border-right:none}
.sticky-bar__btn:hover{opacity:.85}
.sticky-bar__btn--r{background:var(--brown);color:var(--white)}
.sticky-bar__btn--i{background:var(--brown);color:var(--white)}

/* FOOTER */
.site-footer{background:#2a2320;padding:40px 24px;text-align:center;position:relative;z-index:1}
.footer__logo{font-family:var(--ff-l);font-size:18px;letter-spacing:.12em;color:var(--white);margin-bottom:10px}
.footer__rule{width:28px;height:1px;background:var(--red);margin:0 auto 12px}
.footer__info{font-size:11px;color:rgba(255,255,255,.4);line-height:2.2}
.footer__copy{font-size:9px;color:rgba(255,255,255,.22);letter-spacing:.1em;margin-top:18px;display:block}

/* UTILITIES */
.container{max-width:1000px;margin:0 auto;padding:0 24px}
.sec-head{text-align:center;margin-bottom:48px}
.sec-label{font-family:var(--ff-l);font-size:9px;letter-spacing:.35em;color:var(--red);text-transform:uppercase;display:block;margin-bottom:10px}
.sec-title{font-size:clamp(18px,3vw,26px);font-weight:400;color:var(--brown);line-height:1.6}
.sec-rule{width:32px;height:1px;background:var(--red);margin:12px auto 0}
.divider{width:40px;height:1px;background:var(--red);margin:16px auto}

/* CARD */
.card{background:var(--white);border:1px solid rgba(58,46,40,.08);transition:box-shadow var(--ease),transform var(--ease)}
.card:hover{box-shadow:0 8px 32px rgba(58,46,40,.1);transform:translateY(-2px)}

/* TABLE */
.info-table{width:100%;border-collapse:collapse;font-size:13px}
.info-table th{text-align:left;padding:14px 16px;background:rgba(158,107,90,.06);color:var(--red);font-weight:600;letter-spacing:.1em;border-bottom:1px solid rgba(58,46,40,.08);width:120px;vertical-align:top}
.info-table td{padding:14px 16px;border-bottom:1px solid rgba(58,46,40,.08);color:var(--brown-m);line-height:1.8}

/* TAG */
.tag{display:inline-block;font-size:10px;letter-spacing:.1em;padding:3px 10px;border:1px solid var(--red);color:var(--red);margin:3px 4px 3px 0}

/* GRID */
.g2{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.g4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}

/* RESPONSIVE */
@media(max-width:768px){
  .side-nav{display:none}
  .hbg{display:flex}
  .site-header{padding:12px 16px}
  .site-header .logo{gap:8px}
  .site-header img{height:26px !important}
  .logo__main{font-size:13px}
  .logo__sub{font-size:8px;letter-spacing:.12em}
  .page-hero{padding:72px 16px 32px}
  .page-hero__en{font-size:clamp(40px,12vw,60px)}
  .page-hero__jp{font-size:clamp(16px,4vw,20px)}
  .page-content{padding:0 16px 48px}
  .g2,.g3,.g4{grid-template-columns:1fr}
  .info-table th{width:80px;font-size:10px;padding:10px 12px}
  .info-table td{padding:10px 12px;font-size:12px}
  .sec-head{margin-bottom:32px}
  .btn-red,.btn-line{padding:12px 20px;font-size:10px}
  .tag{font-size:8px;padding:3px 8px}
  .card:hover{transform:none;box-shadow:none}
  .sticky-bar__tel .tel-lbl{display:none}
  .sticky-bar__tel{font-size:13px}
  .sticky-bar__btn{font-size:9px;letter-spacing:.08em}
}