/* MarlSystem: index.html の <style> から抽出（内容・記述順は元のまま） */
/* ==========================================================================
   マール・システム — style.css
   和モダン（黒×真鍮）トーン / Zen Old Mincho + Zen Kaku Gothic New
   ========================================================================== */

:root{
  --ink:        #faf7f0;
  --ink-2:      #f1ebdb;
  --ink-3:      #e9e1cd;
  --paper:      #1c1a13;
  --paper-dim:  #6f6754;
  --brass:      #8a6b3d;
  --brass-bright:#a9772c;
  --line:       #e6ded0;

  --serif: 'Zen Old Mincho', serif;
  --sans:  'Zen Kaku Gothic New', sans-serif;

  --wrap: 1100px;
  --gutter: clamp(20px, 5vw, 64px);

  --ease: cubic-bezier(.22,.7,.32,1);
}

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

html{
  background: var(--ink);
  scroll-behavior: smooth;
}

body{
  margin: 0;
  background: var(--ink);
  background-image:
    radial-gradient(ellipse 900px 500px at 50% -10%, rgba(140,111,65,.10), transparent 60%),
    radial-gradient(ellipse 700px 500px at 100% 30%, rgba(140,111,65,.05), transparent 55%);
  color: var(--paper);
  font-family: var(--sans);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3{
  font-family: var(--serif);
  font-weight: 600;
  color: var(--paper);
  margin: 0;
}

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

img{ max-width: 100%; display: block; }

:focus-visible{
  outline: 1px solid var(--brass-bright);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}

.wrap{
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

hr.rule{
  border: none;
  border-top: 1px solid var(--line);
  margin: 0;
}

/* ---------- reveal-on-scroll : one quiet cross-fade, not per-card ---------- */
.reveal{
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .9s var(--ease), transform .9s var(--ease);
}
.reveal.in{
  opacity: 1;
  transform: translateY(0);
}

/* ---------- header ---------- */
header.site{
  position: sticky;
  top: 0;
  z-index: 30;
  margin-left: 0;
  background: rgba(250,247,240,.82);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid transparent;
  transition: border-color .4s var(--ease), background .4s var(--ease);
}
header.site.scrolled{
  border-bottom-color: var(--line);
  background: rgba(250,247,240,.96);
}
.header-inner{
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 22px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: flex-end;
}
nav.site{
  display: flex;
  gap: clamp(20px, 3vw, 44px);
}
nav.site a{
  font-size: 14px;
  letter-spacing: .12em;
  color: var(--paper-dim);
  padding-bottom: 4px;
  border-bottom: 1px solid transparent;
  transition: color .3s var(--ease), border-color .3s var(--ease);
}
nav.site a:hover,
nav.site a.active{
  color: var(--brass-bright);
  border-bottom-color: var(--brass-bright);
}

.nav-toggle{
  display: none;
  width: 30px;
  height: 22px;
  flex-direction: column;
  justify-content: space-between;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span{
  display: block;
  height: 1px;
  background: var(--paper-dim);
}

/* ---------- typography helpers ---------- */
.eyebrow{
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: .28em;
  color: var(--brass);
  margin: 0 0 14px;
}
.section-title{
  font-size: clamp(26px, 3.6vw, 38px);
  line-height: 1.55;
  letter-spacing: .04em;
}
.lead{
  color: var(--paper-dim);
  font-size: 16px;
  line-height: 1.95;
}

/* ---------- buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  font-size: 14px;
  letter-spacing: .1em;
  border: 1px solid var(--line);
  color: var(--paper);
  transition: border-color .35s var(--ease), color .35s var(--ease), background .35s var(--ease);
}
.btn:hover{ border-color: var(--brass); color: var(--brass-bright); }
.btn.primary{
  background: var(--brass);
  border-color: var(--brass);
  color: var(--ink);
}
.btn.primary:hover{
  background: var(--brass-bright);
  border-color: var(--brass-bright);
  color: var(--ink);
}

/* ---------- layout rhythm ---------- */
main{ margin-left: 0; }

section{ padding: clamp(64px, 9vw, 128px) 0; }

/* ---------- hero ---------- */
.hero{
  position: relative;
  overflow: hidden;
  min-height: 82vh;
  display: flex;
  align-items: center;
  padding: clamp(90px, 12vw, 130px) 0 clamp(70px, 9vw, 110px);
  background-image:
    linear-gradient(rgba(250,247,240,.72), rgba(250,247,240,.78)),
    url("../img/hero-bg.jpg");
  background-size: cover;
  background-position: center 30%;
}
.hero-mark{
  position: absolute;
  right: -4%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--serif);
  font-size: min(46vw, 520px);
  line-height: 1;
  color: rgba(140,111,65,.05);
  user-select: none;
  z-index: 1;
}
.hero-inner{
  position: relative;
  z-index: 2;
  width: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.brand-block{
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin: 0 auto 52px;
}
.brand-block img{ height: 180px; width: auto; }
.brand-text{ text-align: left; display: flex; flex-direction: column; gap: 6px; }
.brand-text .en{
  font-family: var(--serif);
  font-size: 40px;
  letter-spacing: .1em;
  color: var(--paper);
}
.brand-text .jp{
  font-family: var(--sans);
  font-size: 18px;
  letter-spacing: .28em;
  color: var(--paper-dim);
}
.hero h1{
  font-size: clamp(32px, 7.8vw, 80px);
  line-height: 1.5;
  letter-spacing: .04em;
  text-align: center;
  max-width: none;
}
.hero .lead{
  max-width: 680px;
  margin: 32px auto 0;
  font-size: clamp(16px, 2vw, 18px);
  line-height: 2.3;
  letter-spacing: .02em;
  text-align: center;
  color: var(--paper);
  white-space: normal;
}

/* ---------- services : ledger list, not card grid ---------- */
.ledger{
  border-top: 1px solid var(--line);
}
.ledger-row{
  display: grid;
  grid-template-columns: 96px 1fr 2fr;
  gap: 32px;
  align-items: baseline;
  padding: 40px 0;
  border-bottom: 1px solid var(--line);
}
.ledger-num{
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: .1em;
  color: var(--brass);
}
.ledger-title{
  font-family: var(--serif);
  font-size: 23px;
  letter-spacing: .03em;
  color: var(--paper);
}
.ledger-desc{
  color: var(--paper-dim);
  font-size: 16px;
  line-height: 2;
}

/* ---------- about ---------- */
.about-section{
  position: relative;
  background-image:
    linear-gradient(rgba(250,247,240,.90), rgba(250,247,240,.94)),
    url("../img/about-bg.jpg");
  background-size: cover;
  background-position: center 35%;
}
.about-grid{
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 64px;
}
.about-grid .lead{ margin-bottom: 30px; font-size: 18px; line-height: 2.1; }
.stats{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 40px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
}
.stat-num{
  font-family: var(--serif);
  font-size: 29px;
  color: var(--brass-bright);
}
.stat-label{
  font-size: 13px;
  color: var(--paper-dim);
  letter-spacing: .05em;
  margin-top: 8px;
}

/* ---------- cta ---------- */
.cta{ text-align: center; }

/* ---------- quick nav : smart 4-item link grid ---------- */
.quicknav{
  margin-top: 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}
.quicknav a{
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 44px 16px;
  border-right: 1px solid var(--line);
  transition: background .35s var(--ease);
}
.quicknav a:last-child{ border-right: none; }
.quicknav a:hover{ background: var(--ink-2); }
.quicknav-num{
  font-family: var(--serif);
  font-size: 14px;
  letter-spacing: .1em;
  color: var(--brass);
}
.quicknav-label{
  font-family: var(--serif);
  font-size: clamp(19px, 2.4vw, 24px);
  letter-spacing: .03em;
  color: var(--paper);
}
.quicknav-arrow{
  font-size: 15px;
  color: var(--paper-dim);
  transition: transform .35s var(--ease), color .35s var(--ease);
}
.quicknav a:hover .quicknav-arrow{
  color: var(--brass-bright);
  transform: translateX(4px);
}

@media (max-width: 640px){
  .quicknav{ grid-template-columns: repeat(2, 1fr); }
  .quicknav a{ border-bottom: 1px solid var(--line); }
  .quicknav a:nth-child(odd){ border-right: 1px solid var(--line); }
  .quicknav a:nth-child(even){ border-right: none; }
  .hero .lead{ max-width: none; font-size: 14px; text-wrap: balance; } /* 改行は語句（.ms-keep）の区切りで行い、行の長さをそろえる（global-menu.css） */
  .cta .lead br{ display: none; }
}
.cta .lead{ max-width: 640px; margin: 0 auto 38px; white-space: normal; font-size: 18px; line-height: 2.1; }

/* ---------- footer ---------- */
footer.site{ border-top: 1px solid var(--line); }
.footer-inner{
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 40px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--paper-dim);
}
.footer-links{ display: flex; gap: 24px; }
.footer-links a:hover{ color: var(--brass-bright); }

/* ---------- responsive ---------- */
@media (max-width: 860px){
  .about-grid{ grid-template-columns: 1fr; gap: 32px; }
  .ledger-row{ grid-template-columns: 56px 1fr; grid-template-rows: auto auto; }
  .ledger-desc{ grid-column: 2; }
}

@media (max-width: 640px){
  .header-inner{ justify-content: space-between; }
  .nav-toggle{ display: flex; }
  nav.site{
    position: fixed;
    top: 0; right: 0;
    height: 100vh;
    width: min(78vw, 300px);
    background: var(--ink-2);
    border-left: 1px solid var(--line);
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    gap: 30px;
    padding: 0 40px;
    transform: translateX(100%);
    transition: transform .4s var(--ease);
    z-index: 50;
  }
  nav.site.open{ transform: translateX(0); }
  .brand-block{ gap: 16px; }
  .brand-block img{ height: 100px; }
  .brand-text{ text-align: left; }
  .brand-text .en{ font-size: 22px; }
  .brand-text .jp{ font-size: 12px; letter-spacing: .22em; }
  .stats{ grid-template-columns: 1fr; gap: 20px; }
  .hero-mark{ font-size: 70vw; opacity: .6; }
}

/* ---------- page hero (sub pages) ---------- */
.page-hero{
  padding: clamp(70px, 9vw, 110px) 0 clamp(40px, 6vw, 64px);
  text-align: center;
}
.page-hero h1{
  font-size: clamp(28px, 4.4vw, 44px);
  letter-spacing: .05em;
  margin-top: 10px;
}

/* ---------- works : case list ---------- */
.case{
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 28px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}
.case:first-child{ border-top: 1px solid var(--line); }
.case-meta{
  font-family: var(--serif);
  font-size: 13px;
  color: var(--brass);
  letter-spacing: .05em;
}
.case-meta span{ display: block; color: var(--paper-dim); font-family: var(--sans); font-size: 12px; margin-top: 6px; }
.case-title{
  font-family: var(--serif);
  font-size: 18px;
  margin-bottom: 10px;
}
.case-desc{ color: var(--paper-dim); font-size: 14px; line-height: 1.9; }

/* ---------- price table ---------- */
.price-table{
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
}
.price-table th, .price-table td{
  text-align: left;
  padding: 20px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}
.price-table thead th{
  font-family: var(--serif);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--brass);
  border-bottom: 1px solid var(--paper-dim);
  padding-bottom: 14px;
}
.price-table td:first-child{ font-family: var(--serif); color: var(--paper); font-size: 15px; }
.price-table td:last-child{ color: var(--paper-dim); }
.price-note{
  margin-top: 28px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  color: var(--paper-dim);
  font-size: 13px;
  line-height: 1.9;
}

/* ---------- contact form ---------- */
.form-grid{ display: grid; gap: 26px; max-width: 640px; }
.form-row label{
  display: block;
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--paper-dim);
  margin-bottom: 10px;
}
.form-row .req{ color: var(--brass-bright); margin-left: 4px; }
.form-row input,
.form-row select,
.form-row textarea{
  width: 100%;
  background: var(--ink-2);
  border: 1px solid var(--line);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 15px;
  padding: 13px 14px;
  transition: border-color .3s var(--ease);
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus{
  outline: none;
  border-color: var(--brass);
}
.form-row textarea{ min-height: 140px; resize: vertical; }
.form-submit{
  border: none;
  cursor: pointer;
  font-family: var(--sans);
}
.contact-info{
  border-top: 1px solid var(--line);
  margin-top: 56px;
  padding-top: 40px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.contact-info .label{ font-size: 12px; color: var(--brass); letter-spacing: .1em; margin-bottom: 8px; }
.contact-info .value{ font-family: var(--serif); font-size: 16px; }

@media (max-width: 640px){
  .case{ grid-template-columns: 1fr; gap: 10px; }
  .contact-info{ grid-template-columns: 1fr; }
  .price-table{ font-size: 13px; }
  .price-table th, .price-table td{ padding: 14px 8px; }
}