:root{
    --paper: #FFFFFF;
    --paper-deep: #F3F3F3;
    --ink: #1A1A1A;
    --ink-soft: #5F6368;
    --teal: #8A2E23;
    --teal-deep: #6E241B;
    --mustard: #8A2E23;
    --line: #E1E1E1;
    --radius: 2px;
  }

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

  html { scroll-behavior: smooth; }

  body{
    background: var(--paper);
    color: var(--ink);
    font-family: 'Helvetica Neue', 'Segoe UI', 'Hiragino Kaku Gothic ProN', sans-serif;
    line-height: 1.6;
  }

  @media (prefers-reduced-motion: reduce) {
    * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  }

  a { color: inherit; text-decoration: none; }
  a:focus-visible, button:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; }

  .mono { font-family: 'SFMono-Regular', Consolas, 'Courier New', monospace; letter-spacing: 0.04em; }

  .display{
    font-family: Georgia, 'Times New Roman', 'Hiragino Mincho ProN', serif;
    font-weight: 700;
    letter-spacing: -0.01em;
  }

  /* ---------- Trace line signature element ---------- */
  .trace-wrap{
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    transform: translateX(-50%);
    pointer-events: none;
    z-index: 0;
  }
  .trace-wrap svg { position:absolute; top:0; left:-1px; }

  /* ---------- Header ---------- */
  header{
    position: sticky;
    top: 0;
    z-index: 10;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
  }
  .nav-inner{
    max-width: 1180px;
    margin: 0 auto;
    padding: 18px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .brand{
    font-family: Georgia, serif;
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
  }
  .brand span { color: var(--teal); }
  nav ul{
    list-style: none;
    display: flex;
    gap: 34px;
  }
  nav a{
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-family: 'SFMono-Regular', Consolas, monospace;
    color: var(--ink-soft);
    position: relative;
    padding-bottom: 4px;
  }
  nav a::after{
    content:'';
    position:absolute;
    left:0; right:0; bottom:0;
    height:1px;
    background: var(--teal);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.25s ease;
  }
  nav a:hover::after, nav a:focus-visible::after{ transform: scaleX(1); }

  /* ---------- Hero ---------- */
/* ---------- 共通のベーススタイル ---------- */
.eyebrow {
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal-deep);
  margin-bottom: 22px;
  display: inline-block;
  border-left: 3px solid var(--mustard);
  padding-left: 12px;
}

/* 共通のヒーローブロックの土台 */
.hero1, .hero2 {
  position: relative;
  max-width: 1180px;
  margin: 0 auto;
  padding: 60px 32px;
}

/* ---------- ヒーロー1（左寄せ） ---------- */
.hero1 {
  text-align: left;
}
.hero1 h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  margin-bottom: 20px;
  font-family: Georgia, 'Times New Roman', 'Hiragino Mincho ProN', serif;
  font-weight: 700;
  letter-spacing: -0.01em;
  max-width: 22ch;
}
.hero1 p {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 45ch;
  line-height: 1.6;
}

/* ---------- ヒーロー2（右寄せ） ---------- */
.hero2 {
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end; /* 中身全体を右に寄せる */
}
.hero2 .eyebrow {
  border-left: none;
  border-right: 3px solid var(--mustard);
  padding-left: 0;
  padding-right: 12px;
}
.hero2 h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.15;
  margin-bottom: 20px;
  font-family: Georgia, 'Times New Roman', 'Hiragino Mincho ProN', serif;
  font-weight: 700;
  letter-spacing: -0.01em;
  max-width: 22ch;
  margin-left: auto; /* 右寄せにするための小技 */
}
.hero2 p {
  font-size: 1.1rem;
  color: var(--ink-soft);
  max-width: 45ch;
  line-height: 1.6;
  margin-left: auto; /* 右寄せにするための小技 */
}

/* ---------- ヒーロー3（中央揃え・解決策） ---------- */
.hero3 {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 80px 32px 100px;
  text-align: center;
}
.hero3 h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.8rem);
  line-height: 1.12;
  margin-bottom: 28px;
  font-family: Georgia, 'Times New Roman', 'Hiragino Mincho ProN', serif;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.hero3 .lede {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 50ch;
  margin: 0 auto;
  line-height: 1.6;
}

/* ---------- スマホ対応（スマホではすべて左寄せでスッキリ見せる） ---------- */
@media (max-width: 760px) {
  .hero2 {
    text-align: left;
    align-items: flex-start;
  }
  .hero2 .eyebrow {
    border-right: none;
    border-left: 3px solid var(--mustard);
    padding-right: 0;
    padding-left: 12px;
  }
  .hero2 h2, .hero2 p {
    margin-left: 0;
  }
}

  /* ---------- Letter section ---------- */
  .letter{
    position: relative;
    max-width: 780px;
    margin: 0 auto;
    padding: 40px 32px 110px;
  }
  .node{
    position: relative;
    padding-left: 46px;
    margin-bottom: 64px;
  }
  .node::before{
    content:'';
    position:absolute;
    left: 12px;
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--paper);
    border: 2px solid var(--teal);
  }
  .node .num{
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-size: 0.75rem;
    color: var(--teal-deep);
    display: block;
    margin-bottom: 10px;
    letter-spacing: 0.1em;
  }
  .node h2{
    font-family: Georgia, serif;
    font-size: 1.7rem;
    margin-bottom: 14px;
  }
  .node p{
    color: var(--ink-soft);
    font-size: 1.02rem;
  }
  .pull{
    font-family: Georgia, serif;
    font-style: italic;
    font-size: 1.3rem;
    color: var(--ink);
    border-left: 3px solid var(--mustard);
    padding-left: 20px;
    margin: 28px 0;
  }
  .sign-off{
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid var(--line);
    font-family: Georgia, serif;
    font-style: italic;
    color: var(--ink-soft);
  }

  /* ---------- Stats strip ---------- */
  .stats{
    background: var(--paper-deep);
    color: var(--ink);
    padding: 70px 32px;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
  .stats-inner{
    max-width: 1180px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
  }
  .stat .num{
    font-family: Georgia, serif;
    font-size: 2.6rem;
    color: var(--teal);
    margin-bottom: 8px;
  }
  .stat .label{
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-soft);
  }

  /* ---------- Footer ---------- */
  footer{
    background: var(--paper-deep);
    padding: 70px 32px 40px;
  }
  .footer-inner{
    max-width: 1180px;
    margin: 0 auto;
  }
  .footer-cols{
    display: grid;
    grid-template-columns: 1.4fr repeat(3, 1fr);
    gap: 40px;
    padding-bottom: 50px;
    border-bottom: 1px solid var(--line);
  }
  .footer-cols h3{
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-soft);
    margin-bottom: 16px;
  }
  .footer-cols ul{ list-style:none; }
  .footer-cols li{ margin-bottom: 10px; font-size: 0.92rem; }
  .footer-cols li a:hover{ color: var(--teal-deep); }
  .footer-bottom{
    display:flex;
    justify-content: space-between;
    align-items:center;
    padding-top: 24px;
    font-size: 0.8rem;
    color: var(--ink-soft);
    font-family: 'SFMono-Regular', Consolas, monospace;
  }

  @media (max-width: 760px){
    nav ul{ display:none; }
    .footer-cols{ grid-template-columns: 1fr 1fr; }
    .stats-inner{ grid-template-columns: 1fr; text-align:center; }
  }