/* =========================================================
   void ― 建築設計事務所
   陰翳（明暗の呼吸）× 明朝 × 余白主役
   ========================================================= */

:root{
  --plaster:   #F3EFE7;   /* 生成り漆喰・光の面 */
  --plaster-2: #ECE6DB;   /* やや深い生成り */
  --plaster-3: #E4DCCE;
  --ink:       #14110E;   /* 墨・影の面 */
  --ink-2:     #1D1913;
  --ink-3:     #262019;
  --amber:     #C9A876;   /* 微光アンバー（光の色）*/
  --amber-deep:#B08E58;
  --text:      #2A251E;   /* 明地の本文 */
  --text-mid:  #6E655A;   /* 明地の弱文字 */
  --text-on-ink:  #E9E2D5;/* 暗地の本文 */
  --text-on-ink-mid:#A79B88;
  --line:      rgba(42,37,30,0.16);
  --line-ink:  rgba(233,226,213,0.18);

  --serif: "Shippori Mincho B1", serif;
  --sans:  "Noto Sans JP", sans-serif;
  --latin: "Jost", "Noto Sans JP", sans-serif;

  --ease:  cubic-bezier(.16,1,.3,1);
  --ease2: cubic-bezier(.5,0,.2,1);

  --pad: clamp(22px, 6vw, 120px);   /* 左右の基準余白 */
  --maxw: 1440px;
}

*{ margin:0; padding:0; box-sizing:border-box; }
html{ scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body{
  font-family:var(--sans);
  font-weight:300;
  color:var(--text);
  background:var(--plaster);
  line-height:1.95;
  letter-spacing:.02em;
  font-feature-settings:"palt" 1;
  overflow-x:hidden;
  line-break:strict;
  word-break:normal;
  overflow-wrap:anywhere;
  -webkit-font-smoothing:antialiased;
}
img{ display:block; max-width:100%; height:auto; }
a{ color:inherit; text-decoration:none; }
ruby rt{ font-size:.42em; letter-spacing:.1em; font-weight:400; opacity:.85; }
::selection{ background:var(--amber); color:var(--ink); }

/* ---------- 共通見出し・ラベル ---------- */
.eyebrow{
  display:flex; align-items:center; gap:14px;
  font-family:var(--latin);
  font-size:11px; font-weight:400;
  letter-spacing:.34em; text-transform:uppercase;
  color:var(--text-mid);
  margin-bottom:30px;
}
.eyebrow-en{ position:relative; padding-left:34px; }
.eyebrow-en::before{
  content:""; position:absolute; left:0; top:50%;
  width:22px; height:1px; background:currentColor; opacity:.6;
}
.eyebrow-ja{
  font-family:var(--sans); font-size:11px; font-weight:400;
  letter-spacing:.22em; color:var(--text-mid);
}
.eyebrow--light{ color:var(--text-on-ink-mid); }
.eyebrow--light .eyebrow-ja{ color:var(--text-on-ink-mid); }

.sec-h{
  font-family:var(--serif); font-weight:600;
  font-size:clamp(28px, 4.4vw, 56px);
  line-height:1.42; letter-spacing:.04em; color:var(--text);
}
.sec-h--light{ color:var(--text-on-ink); }
.sec-lead{
  font-size:15px; line-height:2.1; color:var(--text-mid);
  max-width:44em; margin-top:26px; font-weight:300;
}
.sec-lead--light{ color:var(--text-on-ink-mid); }

/* ---------- reveal ---------- */
.reveal{ opacity:0; transform:translateY(34px); transition:opacity 1.1s var(--ease), transform 1.1s var(--ease); }
.reveal.is-in{ opacity:1; transform:none; }
@media (prefers-reduced-motion:reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
}

/* =========================================================
   HEADER
   ========================================================= */
.hdr{
  position:fixed; top:0; left:0; width:100%; z-index:100;
  display:flex; align-items:center; justify-content:space-between;
  padding:26px var(--pad);
  transition:background .6s var(--ease), padding .6s var(--ease), box-shadow .6s var(--ease);
  mix-blend-mode:normal;
}
.hdr.is-solid{
  background:rgba(243,239,231,.86);
  backdrop-filter:blur(14px); -webkit-backdrop-filter:blur(14px);
  padding-top:18px; padding-bottom:18px;
  box-shadow:0 1px 0 var(--line);
}
.brand{ display:flex; flex-direction:column; line-height:1; }
.brand-mark{
  font-family:var(--latin); font-weight:400; font-size:26px;
  letter-spacing:.14em; color:var(--plaster); transition:color .6s var(--ease);
}
.brand-sub{
  font-family:var(--sans); font-size:9.5px; font-weight:400;
  letter-spacing:.3em; margin-top:7px; color:rgba(243,239,231,.72);
  transition:color .6s var(--ease);
}
.hdr.is-solid .brand-mark{ color:var(--ink); }
.hdr.is-solid .brand-sub{ color:var(--text-mid); }

.menu-btn{
  display:flex; align-items:center; gap:12px;
  background:none; border:none; cursor:pointer;
  font-family:var(--latin); font-size:11px; letter-spacing:.28em;
  text-transform:uppercase; color:var(--plaster);
  transition:color .6s var(--ease); padding:6px 0;
}
.hdr.is-solid .menu-btn{ color:var(--ink); }
.menu-btn-bars{ display:inline-flex; flex-direction:column; gap:5px; width:26px; }
.menu-btn-bars i{ display:block; height:1px; background:currentColor; transition:transform .4s var(--ease), opacity .4s; }
.menu-btn-bars i:first-child{ width:26px; }
.menu-btn-bars i:last-child{ width:17px; align-self:flex-end; }
body.menu-open .menu-btn{ color:var(--plaster); }
body.menu-open .menu-btn-bars i:first-child{ transform:translateY(3px) rotate(9deg); }
body.menu-open .menu-btn-bars i:last-child{ width:26px; transform:translateY(-3px) rotate(-9deg); }

/* =========================================================
   MENU OVERLAY
   ========================================================= */
.menu{
  position:fixed; inset:0; z-index:90;
  background:var(--ink);
  padding:clamp(88px,11vh,120px) var(--pad) clamp(34px,5vh,56px);
  display:flex; flex-direction:column; justify-content:flex-start;
  opacity:0; visibility:hidden; transition:opacity .6s var(--ease), visibility .6s;
  overflow-y:auto;
}
body.menu-open .menu{ opacity:1; visibility:visible; }
.menu-inner{ width:100%; max-width:var(--maxw); margin:0 auto; }
.menu-list{ list-style:none; border-top:1px solid var(--line-ink); }
.menu-list li{ border-bottom:1px solid var(--line-ink); overflow:hidden; }
.menu-link{
  display:flex; align-items:baseline; gap:22px;
  padding:clamp(12px,1.5vh,18px) 0;
  transform:translateY(102%);
  transition:transform .8s var(--ease), color .4s;
}
body.menu-open .menu-link{ transform:none; }
.menu-en{
  font-family:var(--latin); font-weight:300; letter-spacing:.06em;
  font-size:clamp(24px,4.4vw,46px); color:var(--text-on-ink);
  transition:color .4s, padding-left .5s var(--ease);
}
.menu-ja{ font-size:12px; letter-spacing:.22em; color:var(--text-on-ink-mid); }
.menu-link:hover .menu-en{ color:var(--amber); padding-left:18px; }
.menu-foot{
  margin-top:clamp(30px,5vh,54px); display:flex; flex-wrap:wrap;
  align-items:baseline; gap:14px 36px;
  font-family:var(--latin); letter-spacing:.14em; color:var(--text-on-ink-mid);
}
.menu-foot-tel{ font-size:20px; color:var(--text-on-ink); letter-spacing:.1em; }
.menu-foot-mail{ font-size:13px; }
.menu-foot-addr{ font-family:var(--sans); font-size:12px; letter-spacing:.14em; width:100%; margin-top:4px; }
/* stagger */
body.menu-open .menu-list li:nth-child(1) .menu-link{ transition-delay:.05s; }
body.menu-open .menu-list li:nth-child(2) .menu-link{ transition-delay:.10s; }
body.menu-open .menu-list li:nth-child(3) .menu-link{ transition-delay:.15s; }
body.menu-open .menu-list li:nth-child(4) .menu-link{ transition-delay:.20s; }
body.menu-open .menu-list li:nth-child(5) .menu-link{ transition-delay:.25s; }
body.menu-open .menu-list li:nth-child(6) .menu-link{ transition-delay:.30s; }
body.menu-open .menu-list li:nth-child(7) .menu-link{ transition-delay:.35s; }
body.menu-open .menu-list li:nth-child(8) .menu-link{ transition-delay:.40s; }
body.menu-open .menu-list li:nth-child(9) .menu-link{ transition-delay:.45s; }

/* =========================================================
   HERO
   ========================================================= */
.hero{ position:relative; height:100svh; min-height:600px; width:100%; overflow:hidden; background:var(--ink); }
.hero-bg{
  position:absolute; inset:0;
  background:var(--ink) url('../images/hero-pc.jpg') center/cover no-repeat;
  transform:scale(1.06); opacity:0;
  animation:heroIn 2.4s var(--ease) .1s forwards;
}
@keyframes heroIn{ to{ transform:scale(1); opacity:1; } }
.hero-scrim{
  position:absolute; inset:0;
  background:
    linear-gradient(100deg, rgba(20,17,14,.72) 0%, rgba(20,17,14,.32) 42%, rgba(20,17,14,0) 68%),
    linear-gradient(0deg, rgba(20,17,14,.5) 0%, rgba(20,17,14,0) 40%);
}
.hero-body{
  position:absolute; left:var(--pad); bottom:clamp(72px,15vh,150px);
  z-index:2; max-width:min(920px,92vw);
}
.hero-eyebrow{
  display:flex; align-items:center; gap:16px;
  font-family:var(--latin); font-size:11px; letter-spacing:.4em; text-transform:uppercase;
  color:rgba(243,239,231,.82); margin-bottom:34px;
  opacity:0; animation:fadeUp 1.3s var(--ease) .7s forwards;
}
.hero-eyebrow-line{ width:52px; height:1px; background:var(--amber); }
.hero-title{
  font-family:var(--serif); font-weight:600; color:var(--plaster);
  font-size:clamp(38px,7vw,92px); line-height:1.34; letter-spacing:.06em;
  text-shadow:0 2px 40px rgba(0,0,0,.35);
  white-space:nowrap;   /* break only at explicit <br>, never orphan a char */
}
.hero-title ruby rt{ opacity:.75; }
.hero-title br{ }
.hero-title{ opacity:0; animation:fadeUp 1.5s var(--ease) .95s forwards; }
.hero-lead{
  margin-top:30px; color:rgba(243,239,231,.8); font-size:14px; letter-spacing:.12em;
  font-weight:300; opacity:0; animation:fadeUp 1.3s var(--ease) 1.25s forwards;
}
@keyframes fadeUp{ from{ opacity:0; transform:translateY(26px);} to{ opacity:1; transform:none; } }

/* =========================================================
   PHILOSOPHY (ink)
   ========================================================= */
.phil{ background:var(--ink); color:var(--text-on-ink); padding:clamp(90px,14vh,180px) var(--pad); }
.phil-head{ max-width:var(--maxw); margin:0 auto clamp(48px,7vh,86px); }
.phil-h{
  font-family:var(--serif); font-weight:500; color:var(--plaster);
  font-size:clamp(34px,6vw,78px); line-height:1.4; letter-spacing:.06em; margin-top:22px;
}
.phil-grid{
  max-width:var(--maxw); margin:0 auto;
  display:grid; grid-template-columns:0.92fr 1fr; gap:clamp(40px,6vw,96px); align-items:center;
}
.phil-figure{ position:relative; }
.phil-figure img{ width:100%; aspect-ratio:4/5; object-fit:cover; filter:brightness(.98); }
.phil-vert{
  position:absolute; top:26px; right:-14px;
  writing-mode:vertical-rl; text-orientation:upright;
  font-family:var(--serif); font-size:clamp(13px,1.5vw,17px);
  letter-spacing:.34em; color:var(--amber);
  background:rgba(20,17,14,.42); padding:16px 8px; backdrop-filter:blur(3px);
}
.phil-text p{ font-size:15px; line-height:2.15; color:var(--text-on-ink); font-weight:300; margin-bottom:20px; }
.phil-text .phil-note{ color:var(--text-on-ink-mid); font-size:13.5px; line-height:2.15; margin-top:12px; }
.pull{
  font-family:var(--serif); font-weight:500; color:var(--amber);
  font-size:clamp(22px,3vw,34px); line-height:1.7; letter-spacing:.06em;
  margin:38px 0; padding-left:26px; border-left:1px solid rgba(201,168,118,.5);
}

/* =========================================================
   WORKS
   ========================================================= */
.works{ background:var(--plaster); padding:clamp(90px,14vh,180px) var(--pad); }
.works-head{ max-width:var(--maxw); margin:0 auto clamp(50px,8vh,96px); }
.works-head .sec-h{ margin-top:20px; }
.works-grid{
  max-width:var(--maxw); margin:0 auto;
  display:grid; grid-template-columns:repeat(2,1fr); gap:clamp(34px,4.5vw,72px) clamp(30px,4vw,64px);
}
.work{ }
.work-media{
  display:block; position:relative; overflow:hidden; background:var(--plaster-3);
  aspect-ratio:3/2;
}
.work-media img{
  width:100%; height:100%; object-fit:cover;
  transition:transform 1.3s var(--ease), filter 1.3s var(--ease);
}
.work-media::after{
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg, rgba(20,17,14,0) 60%, rgba(20,17,14,.28));
  opacity:0; transition:opacity .8s var(--ease);
}
.work:hover .work-media img{ transform:scale(1.045); }
.work:hover .work-media::after{ opacity:1; }
.work-meta{ display:flex; align-items:baseline; gap:16px; margin-top:22px; flex-wrap:wrap; }
.work-idx{
  font-family:var(--latin); font-size:12px; letter-spacing:.2em; color:var(--amber-deep);
}
.work-name{
  font-family:var(--serif); font-weight:600; font-size:clamp(19px,2vw,25px);
  letter-spacing:.05em; color:var(--text); line-height:1.5;
}
.work-info{
  width:100%; display:flex; gap:20px; margin-top:8px;
  font-size:11.5px; letter-spacing:.14em; color:var(--text-mid);
}
.work-info span{ position:relative; }
.work-info span+span{ padding-left:20px; }
.work-info span+span::before{ content:""; position:absolute; left:0; top:50%; width:1px; height:11px; background:var(--line); transform:translateY(-50%); }

/* =========================================================
   DESIGN
   ========================================================= */
.design{ background:var(--ink); color:var(--text-on-ink); }
.design-intro{ max-width:var(--maxw); margin:0 auto; padding:clamp(90px,14vh,180px) var(--pad) clamp(50px,8vh,90px); }
.design-intro .sec-h{ margin-top:20px; }

/* ---- 移ろう光（署名）---- */
.light{ position:relative; }
.light-track{ position:relative; height:320vh; }
.light-sticky{
  position:sticky; top:0; height:100svh; overflow:hidden;
}
.light-layer{
  position:absolute; inset:0; background-size:cover; background-position:center;
  will-change:opacity;
}
.light-layer[data-layer="morning"]{ opacity:1; }
.light-layer[data-layer="noon"]{ opacity:0; }
.light-layer[data-layer="dusk"]{ opacity:0; }
.light-scrim{
  position:absolute; inset:0;
  background:
    linear-gradient(90deg, rgba(20,17,14,.62) 0%, rgba(20,17,14,.2) 34%, rgba(20,17,14,0) 60%),
    linear-gradient(0deg, rgba(20,17,14,.66) 0%, rgba(20,17,14,0) 46%);
}
.light-caption{
  position:absolute; left:var(--pad); bottom:clamp(60px,12vh,120px); z-index:3;
  max-width:min(620px,84vw);
}
.light-time{ display:flex; align-items:baseline; gap:14px; margin-bottom:24px; }
.light-time-ja{ font-family:var(--serif); font-size:26px; color:var(--amber); letter-spacing:.2em; transition:color .5s; }
.light-time-en{ font-family:var(--latin); font-size:11px; letter-spacing:.3em; text-transform:uppercase; color:var(--text-on-ink-mid); }
.light-line{
  font-family:var(--serif); font-weight:500; color:var(--plaster);
  font-size:clamp(30px,5vw,64px); line-height:1.42; letter-spacing:.06em;
  text-shadow:0 2px 34px rgba(0,0,0,.4);
}
.light-sub{ margin-top:26px; font-size:13.5px; line-height:2.1; color:rgba(243,239,231,.82); font-weight:300; max-width:34em; }

/* ---- 土地を読む / 暮らしから ---- */
.dpoint{
  max-width:var(--maxw); margin:0 auto;
  display:grid; grid-template-columns:1.05fr 0.95fr; gap:clamp(40px,6vw,100px); align-items:center;
  padding:clamp(70px,11vh,140px) var(--pad);
}
.dpoint--b{ }
.dpoint--b .dpoint-media{ order:2; }
.dpoint-media img{ width:100%; object-fit:cover; }
.dpoint--a .dpoint-media img{ aspect-ratio:4/3; }
.dpoint--b .dpoint-media img{ aspect-ratio:4/5; }
.dpoint-idx{ font-family:var(--sans); font-size:12px; letter-spacing:.14em; color:var(--amber); margin-bottom:20px; }
.dpoint-h{
  font-family:var(--serif); font-weight:600; color:var(--plaster);
  font-size:clamp(26px,3.6vw,44px); line-height:1.42; letter-spacing:.05em; margin-bottom:26px;
}
.dpoint-text p{ font-size:14.5px; line-height:2.15; color:var(--text-on-ink); font-weight:300; margin-bottom:18px; }

/* =========================================================
   FIELD
   ========================================================= */
.field{ background:var(--plaster-2); padding:clamp(90px,14vh,180px) var(--pad); }
.field-head{ max-width:var(--maxw); margin:0 auto clamp(46px,7vh,80px); }
.field-head .sec-h{ margin-top:20px; }
.field-list{
  max-width:var(--maxw); margin:0 auto;
  display:grid; grid-template-columns:repeat(2,1fr); gap:clamp(28px,3.4vw,52px);
}
.fitem{ background:var(--plaster); border:1px solid var(--line); overflow:hidden; display:flex; flex-direction:column; }
.fitem-media{ overflow:hidden; aspect-ratio:16/10; }
.fitem-media img{ width:100%; height:100%; object-fit:cover; transition:transform 1.2s var(--ease); }
.fitem:hover .fitem-media img{ transform:scale(1.04); }
.fitem-body{ padding:clamp(26px,3vw,44px); }
.fitem--text{ justify-content:center; background:var(--ink); border-color:transparent; }
.fitem--text .fitem-no{ color:var(--amber); }
.fitem--text .fitem-h{ color:var(--plaster); }
.fitem--text p{ color:var(--text-on-ink-mid); }
.fitem-no{ font-family:var(--latin); font-size:12px; letter-spacing:.2em; color:var(--amber-deep); }
.fitem-h{ font-family:var(--serif); font-weight:600; font-size:clamp(20px,2.3vw,28px); letter-spacing:.05em; color:var(--text); margin:12px 0 16px; }
.fitem-body p{ font-size:14px; line-height:2.05; color:var(--text-mid); font-weight:300; }

/* =========================================================
   REASON (ink)
   ========================================================= */
.reason{ background:var(--ink-2); color:var(--text-on-ink); padding:clamp(90px,14vh,180px) var(--pad); }
.reason-head{ max-width:var(--maxw); margin:0 auto clamp(50px,8vh,88px); }
.reason-head .sec-h{ margin-top:20px; }
.reason-list{
  max-width:var(--maxw); margin:0 auto;
  display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line-ink);
  border:1px solid var(--line-ink);
}
.ritem{ background:var(--ink-2); padding:clamp(34px,4vw,58px) clamp(28px,3vw,50px); display:flex; gap:26px; }
.ritem-no{ font-family:var(--latin); font-weight:300; font-size:clamp(30px,3.6vw,52px); color:var(--amber); line-height:1; flex-shrink:0; }
.ritem-body h3{ font-family:var(--serif); font-weight:600; font-size:clamp(19px,2.1vw,25px); color:var(--plaster); letter-spacing:.05em; margin-bottom:16px; line-height:1.5; }
.ritem-body p{ font-size:14px; line-height:2.05; color:var(--text-on-ink-mid); font-weight:300; }
.reason-foot{
  max-width:var(--maxw); margin:clamp(40px,6vh,70px) auto 0;
  font-family:var(--serif); font-size:clamp(15px,1.7vw,20px); line-height:2; color:var(--text-on-ink); letter-spacing:.04em;
}

/* =========================================================
   FLOW
   ========================================================= */
.flow{ background:var(--plaster); padding:clamp(90px,14vh,180px) var(--pad); }
.flow-head{ max-width:920px; margin:0 auto clamp(46px,7vh,78px); }
.flow-head .sec-h{ margin-top:20px; }
.flow-list{ max-width:920px; margin:0 auto; list-style:none; counter-reset:none; }
.fstep{
  display:flex; gap:clamp(24px,4vw,56px); align-items:baseline;
  padding:clamp(24px,3.2vh,38px) 0; border-top:1px solid var(--line);
}
.fstep:last-child{ border-bottom:1px solid var(--line); }
.fstep-no{ font-family:var(--latin); font-weight:300; font-size:clamp(20px,2.4vw,30px); color:var(--amber-deep); letter-spacing:.1em; flex-shrink:0; width:2.4em; }
.fstep h3{ font-family:var(--serif); font-weight:600; font-size:clamp(18px,2vw,24px); color:var(--text); letter-spacing:.05em; margin-bottom:8px; }
.fstep p{ font-size:13.5px; color:var(--text-mid); line-height:1.95; font-weight:300; }
.flow-note{ max-width:920px; margin:34px auto 0; font-size:12.5px; color:var(--text-mid); letter-spacing:.06em; }

/* =========================================================
   MESSAGE
   ========================================================= */
.message{
  background:var(--plaster-2);
  display:grid; grid-template-columns:0.86fr 1.14fr; align-items:stretch;
}
.message-media{ overflow:hidden; }
.message-media img{ width:100%; height:100%; object-fit:cover; min-height:520px; }
.message-body{ padding:clamp(64px,10vh,140px) var(--pad); align-self:center; max-width:820px; }
.message-pull{
  font-family:var(--serif); font-weight:600; color:var(--text);
  font-size:clamp(30px,4.4vw,58px); line-height:1.42; letter-spacing:.05em; margin:8px 0 40px;
}
.message-body p{ font-size:14.5px; line-height:2.2; color:var(--text); font-weight:300; margin-bottom:22px; max-width:40em; }
.message-sign{ display:flex; align-items:baseline; gap:18px; margin-top:40px; }
.message-sign-role{ font-size:12px; letter-spacing:.16em; color:var(--text-mid); }
.message-sign-name{ font-family:var(--serif); font-size:24px; letter-spacing:.14em; color:var(--text); }

/* =========================================================
   COMPANY (ink)
   ========================================================= */
.company{ background:var(--ink); color:var(--text-on-ink); padding:clamp(90px,14vh,180px) var(--pad); }
.company-head{ max-width:960px; margin:0 auto clamp(40px,6vh,70px); }
.company-head .sec-h{ margin-top:20px; }
.company-table{ max-width:960px; margin:0 auto; border-top:1px solid var(--line-ink); }
.company-table > div{ display:grid; grid-template-columns:230px 1fr; gap:20px; padding:22px 4px; border-bottom:1px solid var(--line-ink); }
.company-table dt{ font-size:12.5px; letter-spacing:.16em; color:var(--text-on-ink-mid); font-weight:400; }
.company-table dd{ font-size:14px; color:var(--text-on-ink); font-weight:300; letter-spacing:.03em; }
.company-table a{ border-bottom:1px solid var(--line-ink); transition:color .3s; }
.company-table a:hover{ color:var(--amber); }

/* =========================================================
   CONTACT
   ========================================================= */
.contact{ position:relative; overflow:hidden; }
.contact-bg{ position:absolute; inset:0; background:var(--ink) url('../images/contact.jpg') center/cover no-repeat; }
.contact-scrim{ position:absolute; inset:0; background:
  linear-gradient(90deg, rgba(20,17,14,.5) 0%, rgba(20,17,14,.68) 55%, rgba(20,17,14,.82) 100%),
  linear-gradient(180deg, rgba(20,17,14,.34) 0%, rgba(20,17,14,0) 38%); }
.contact-body{ position:relative; z-index:2; max-width:var(--maxw); margin:0 auto; padding:clamp(96px,18vh,220px) var(--pad); }
.contact-h{
  font-family:var(--serif); font-weight:600; color:var(--plaster);
  font-size:clamp(30px,5vw,68px); line-height:1.42; letter-spacing:.05em; margin:14px 0 30px;
  text-shadow:0 2px 36px rgba(0,0,0,.4);
}
.contact-lead{ font-size:14.5px; line-height:2.1; color:rgba(243,239,231,.86); font-weight:300; max-width:38em; margin-bottom:52px; }
.contact-actions{ display:flex; flex-wrap:wrap; gap:20px; }
.cbtn{
  display:flex; flex-direction:column; gap:8px;
  padding:26px 40px; min-width:290px;
  border:1px solid rgba(233,226,213,.34); background:rgba(20,17,14,.28);
  backdrop-filter:blur(6px); -webkit-backdrop-filter:blur(6px);
  transition:background .5s var(--ease), border-color .5s var(--ease), transform .5s var(--ease);
}
.cbtn:hover{ background:rgba(233,226,213,.1); border-color:var(--amber); transform:translateY(-3px); }
.cbtn--primary{ background:var(--amber); border-color:var(--amber); }
.cbtn--primary:hover{ background:var(--amber-deep); border-color:var(--amber-deep); }
.cbtn-label{ font-size:11.5px; letter-spacing:.18em; color:var(--text-on-ink-mid); }
.cbtn--primary .cbtn-label{ color:rgba(20,17,14,.66); }
.cbtn-value{ font-family:var(--latin); font-size:22px; letter-spacing:.08em; color:var(--plaster); }
.cbtn--primary .cbtn-value{ color:var(--ink); }

/* =========================================================
   FOOTER
   ========================================================= */
.foot{ background:var(--ink); color:var(--text-on-ink-mid); padding:clamp(64px,9vh,110px) var(--pad) 40px; border-top:1px solid var(--line-ink); }
.foot-top{ max-width:var(--maxw); margin:0 auto; display:grid; grid-template-columns:1fr 1.2fr; gap:50px; padding-bottom:clamp(40px,6vh,70px); }
.foot-mark{ font-family:var(--latin); font-size:32px; letter-spacing:.14em; color:var(--plaster); display:block; }
.foot-sub{ font-size:10px; letter-spacing:.3em; color:var(--text-on-ink-mid); display:block; margin-top:8px; }
.foot-tag{ font-family:var(--serif); font-size:15px; letter-spacing:.08em; color:var(--text-on-ink); margin-top:26px; }
.foot-nav{ display:grid; grid-template-columns:repeat(3,1fr); gap:16px 24px; align-content:start; }
.foot-nav a{ font-size:13px; letter-spacing:.1em; color:var(--text-on-ink-mid); transition:color .3s; }
.foot-nav a:hover{ color:var(--amber); }
.foot-bottom{ max-width:var(--maxw); margin:0 auto; padding-top:30px; border-top:1px solid var(--line-ink); display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; }
.foot-addr,.foot-copy{ font-size:11.5px; letter-spacing:.1em; color:var(--text-on-ink-mid); }

/* to-top */
.totop{
  position:fixed; right:26px; bottom:26px; z-index:80;
  width:46px; height:46px; border-radius:50%; border:1px solid var(--line-ink);
  background:rgba(20,17,14,.6); color:var(--plaster); cursor:pointer;
  backdrop-filter:blur(8px); font-size:15px;
  opacity:0; visibility:hidden; transform:translateY(10px);
  transition:opacity .5s var(--ease), transform .5s var(--ease), background .3s, border-color .3s;
}
.totop.show{ opacity:1; visibility:visible; transform:none; }
.totop:hover{ background:var(--amber); color:var(--ink); border-color:var(--amber); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width:900px){
  .phil-grid{ grid-template-columns:1fr; gap:48px; }
  .phil-figure img{ aspect-ratio:4/3; }
  .phil-vert{ font-size:13px; top:auto; bottom:14px; right:-8px; }
  .works-grid{ grid-template-columns:1fr; gap:52px; }
  .dpoint,.dpoint--b .dpoint-media{ grid-template-columns:1fr; }
  .dpoint{ gap:34px; }
  .dpoint--b .dpoint-media{ order:0; }
  .dpoint--a .dpoint-media img,.dpoint--b .dpoint-media img{ aspect-ratio:4/3; }
  .field-list{ grid-template-columns:1fr; }
  .reason-list{ grid-template-columns:1fr; }
  .message{ grid-template-columns:1fr; }
  .message-media img{ min-height:auto; aspect-ratio:4/3; }
  .foot-top{ grid-template-columns:1fr; gap:40px; }
}
@media (max-width:680px){
  :root{ --pad:22px; }
  body{ line-height:1.9; }
  .hero{ height:100svh; }
  .hero-bg{ background-image:url('../images/hero-sp.jpg'); background-position:center 30%; }
  .hero-scrim{ background:linear-gradient(0deg, rgba(20,17,14,.7) 0%, rgba(20,17,14,.05) 46%, rgba(20,17,14,.35) 100%); }
  .hero-body{ left:var(--pad); right:var(--pad); bottom:clamp(60px,12vh,110px); }
  .hero-title{ font-size:clamp(30px,8.6vw,50px); }
  .phil-h,.sec-h,.dpoint-h,.contact-h,.light-line,.message-pull{ letter-spacing:.04em; }
  .company-table > div{ grid-template-columns:1fr; gap:6px; padding:18px 2px; }
  .company-table dt{ font-size:11.5px; }
  .work-info{ gap:14px; }
  .light-track{ height:280vh; }
  .cbtn{ min-width:0; width:100%; }
  .foot-nav{ grid-template-columns:repeat(2,1fr); }
  .foot-bottom{ flex-direction:column; }
  .menu-foot-tel{ font-size:18px; }
  /* mobile drawer: top-aligned + scrollable (中央寄せ固定は見切れる) */
  .menu{ justify-content:flex-start; padding-top:88px; padding-bottom:36px; }
  .menu-link{ padding:12px 0; }
  .menu-foot{ margin-top:26px; }
}
@media (max-width:680px) and (max-height:720px){
  .menu-link{ padding:9px 0; }
  .menu-en{ font-size:22px; }
}