:root{
    --ink:#0B1F33;
    --ink-soft:#0F2940;
    --gold:#C9A857;
    --gold-soft:#D9C284;
    --paper:#F5F2EC;
    --text:#1A1A1A;
    --muted:#8B8378;
    --line: rgba(201,168,87,0.35);
  }
  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--paper);
    color:var(--text);
    font-family:"Noto Sans JP","Noto Sans TC",sans-serif;
    font-weight:300;
    line-height:1.9;
    -webkit-font-smoothing:antialiased;
  }
  .lang-jp{font-family:"Noto Serif JP","Noto Serif TC",serif;}
  .serif{font-family:"Noto Serif JP","Noto Serif TC",serif;}
  .display{font-family:"Cormorant Garamond","Noto Serif JP",serif;}
  .tabular{font-variant-numeric: tabular-nums;}

  a{color:inherit; text-decoration:none;}
  img{max-width:100%; display:block;}

  /* ===== Emblem mark (signature element): sunrise + four-leaf clover ===== */
  .seal{
    width:46px; height:46px;
    flex-shrink:0;
    display:flex; align-items:center; justify-content:center;
  }
  .seal svg{ width:100%; height:100%; display:block; }

  /* ===== Header ===== */
  header{
    position:fixed; top:0; left:0; right:0;
    z-index:100;
    background:rgba(11,31,51,0.92);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .nav-wrap{
    max-width:1120px; margin:0 auto;
    display:flex; align-items:center; justify-content:space-between;
    padding:14px 28px;
  }
  .brand{display:flex; align-items:center; gap:14px;}
  .brand-name{color:var(--paper);}
  .brand-name .ja{font-size:17px; letter-spacing:0.08em; display:block;}
  .brand-name .en{font-size:10px; letter-spacing:0.18em; color:var(--gold-soft); display:block; margin-top:2px; font-family:"Cormorant Garamond",serif;}
  nav ul{display:flex; gap:32px; list-style:none;}
  nav a{
    color:var(--paper); font-size:13px; letter-spacing:0.1em;
    opacity:0.85; transition:opacity 0.25s, color 0.25s;
    padding-bottom:4px; border-bottom:1px solid transparent;
  }
  nav a:hover{opacity:1; color:var(--gold-soft); border-bottom-color:var(--gold);}
  .lang-switch{display:flex; gap:6px; margin-left:8px;}
  .lang-switch button{
    background:none; border:1px solid var(--line); color:var(--gold-soft);
    font-size:11px; padding:5px 10px; cursor:pointer; letter-spacing:0.05em;
    transition:background 0.25s, color 0.25s;
    font-family:"Noto Sans JP",sans-serif;
  }
  .lang-switch button.active{background:var(--gold); color:var(--ink); border-color:var(--gold);}
  .menu-toggle{display:none; background:none; border:none; cursor:pointer; padding:6px;}
  .menu-toggle span{display:block; width:24px; height:1.5px; background:var(--paper); margin:5px 0;}

  /* ===== Hero ===== */
  .hero{
    min-height:100vh;
    display:flex; flex-direction:column; justify-content:center;
    background:
      radial-gradient(ellipse at 75% 20%, rgba(201,168,87,0.10), transparent 55%),
      linear-gradient(180deg, var(--ink) 0%, #0A1B2C 100%);
    padding:140px 28px 80px;
    position:relative;
    overflow:hidden;
  }
  .hero::before{
    content:"";
    position:absolute;
    right:-10%; top:10%;
    width:560px; height:560px;
    border:1px solid var(--line);
    border-radius:50%;
    opacity:0.5;
  }
  .hero::after{
    content:"";
    position:absolute;
    right:0%; top:18%;
    width:380px; height:380px;
    border:1px solid var(--line);
    border-radius:50%;
    opacity:0.6;
  }
  .hero-inner{max-width:1120px; margin:0 auto; width:100%; position:relative; z-index:2;}
  .eyebrow{
    color:var(--gold);
    font-size:12px; letter-spacing:0.32em;
    margin-bottom:28px;
    display:flex; align-items:center; gap:14px;
  }
  .eyebrow .rule{width:48px; height:1px; background:var(--gold);}
  .hero h1{
    color:var(--paper);
    font-family:"Noto Serif JP","Noto Serif TC",serif;
    font-weight:500;
    font-size:clamp(34px, 5.2vw, 64px);
    line-height:1.45;
    letter-spacing:0.02em;
    max-width:780px;
  }
  .hero h1 em{
    font-style:normal; color:var(--gold-soft);
  }
  .hero-sub{
    margin-top:28px; max-width:560px;
    color:rgba(245,242,236,0.72);
    font-size:15.5px; line-height:1.95;
    font-weight:300;
  }
  .hero-meta{
    margin-top:56px;
    display:flex; gap:48px; flex-wrap:wrap;
    border-top:1px solid var(--line);
    padding-top:28px;
  }
  .hero-meta div{min-width:120px;}
  .hero-meta .k{font-size:11px; color:var(--gold-soft); letter-spacing:0.15em; margin-bottom:6px;}
  .hero-meta .v{font-size:15px; color:var(--paper); font-family:"Noto Serif JP","Noto Serif TC",serif;}

  /* ===== Section shared ===== */
  section{padding:100px 28px;}
  .container{max-width:1120px; margin:0 auto;}
  .section-head{
    display:flex; align-items:baseline; gap:20px;
    margin-bottom:56px;
  }
  .section-head .num{
    font-family:"Cormorant Garamond",serif;
    font-size:15px; color:var(--gold);
    letter-spacing:0.1em;
  }
  .section-head h2{
    font-family:"Noto Serif JP","Noto Serif TC",serif;
    font-weight:500;
    font-size:clamp(24px, 3vw, 32px);
    color:var(--ink);
    letter-spacing:0.02em;
  }
  .section-head .line{flex:1; height:1px; background:linear-gradient(90deg, var(--gold), transparent);}

  /* ===== About / Registry-style table ===== */
  .about{background:var(--paper);}
  .registry{
    border-top:1px solid var(--ink);
    border-bottom:1px solid var(--ink);
  }
  .registry-row{
    display:grid;
    grid-template-columns:200px 1fr;
    border-bottom:1px solid rgba(11,31,51,0.14);
  }
  .registry-row:last-child{border-bottom:none;}
  .registry-row .label{
    padding:22px 20px;
    font-size:13px;
    color:var(--muted);
    letter-spacing:0.08em;
    border-right:1px solid rgba(11,31,51,0.14);
    background:rgba(11,31,51,0.02);
  }
  .registry-row .value{
    padding:22px 28px;
    font-size:15.5px;
    color:var(--text);
  }
  .registry-row .value .en{display:block; font-size:11.5px; color:var(--muted); margin-top:4px; letter-spacing:0.06em;}
  .purpose-list{list-style:none; counter-reset:purpose;}
  .purpose-list li{
    counter-increment:purpose;
    margin-bottom:10px;
    padding-left:28px;
    position:relative;
    font-size:15px;
  }
  .purpose-list li::before{
    content:counter(purpose);
    position:absolute; left:0; top:0;
    font-family:"Cormorant Garamond",serif;
    color:var(--gold);
    font-size:14px;
  }
  .purpose-list li:last-child{margin-bottom:0;}

  /* ===== Business focus ===== */
  .business{background:var(--ink); color:var(--paper);}
  .business .section-head h2{color:var(--paper);}
  .business .section-head .num{color:var(--gold-soft);}
  .focus-banner{
    border:1px solid var(--line);
    padding:36px 32px;
    margin-bottom:48px;
    display:flex; align-items:flex-start; gap:24px;
    background:rgba(245,242,236,0.02);
  }
  .focus-banner .tag{
    font-size:11px; color:var(--ink);
    background:var(--gold);
    padding:6px 12px;
    letter-spacing:0.1em;
    white-space:nowrap;
    font-weight:500;
  }
  .focus-banner p{font-size:15px; color:rgba(245,242,236,0.82); line-height:1.9;}
  .focus-banner p .en{display:block; font-size:11.5px; color:var(--gold-soft); margin-top:6px;}

  .biz-grid{display:grid; grid-template-columns:repeat(2, 1fr); gap:1px; background:var(--line);}
  .biz-card{
    background:var(--ink);
    padding:36px 32px;
  }
  .biz-card .mk{
    font-family:"Cormorant Garamond",serif;
    color:var(--gold);
    font-size:13px;
    letter-spacing:0.15em;
    margin-bottom:14px;
    display:block;
  }
  .biz-card h3{
    font-family:"Noto Serif JP","Noto Serif TC",serif;
    font-size:19px; font-weight:500;
    margin-bottom:12px;
    color:var(--paper);
  }
  .biz-card p{font-size:14px; color:rgba(245,242,236,0.65); line-height:1.85;}
  .biz-card.muted{opacity:0.55;}

  /* ===== Officer / company info card ===== */
  .info{background:var(--paper);}
  .info-grid{
    display:grid; grid-template-columns:1.1fr 1fr; gap:64px;
    align-items:start;
  }
  .officer-card{
    border:1px solid var(--ink);
    padding:44px 36px;
    position:relative;
  }
  .officer-card .role{font-size:12px; color:var(--gold); letter-spacing:0.2em; margin-bottom:16px;}
  .officer-card h3{
    font-family:"Noto Serif JP","Noto Serif TC",serif;
    font-size:28px; font-weight:600; letter-spacing:0.1em;
    color:var(--ink);
  }
  .officer-card .name-en{font-family:"Cormorant Garamond",serif; font-style:italic; color:var(--muted); font-size:14px; margin-top:6px;}
  .officer-card .desc{margin-top:24px; font-size:14px; color:var(--muted); line-height:1.95;}
  .officer-card .seal-big{
    position:absolute; right:36px; top:44px;
  }
  .reg-summary p{font-size:14.5px; color:var(--text); line-height:2; margin-bottom:18px;}
  .reg-summary .small-table{width:100%; border-collapse:collapse; margin-top:8px;}
  .reg-summary .small-table tr{border-bottom:1px solid rgba(11,31,51,0.1);}
  .reg-summary .small-table td{padding:12px 0; font-size:14px;}
  .reg-summary .small-table td:first-child{color:var(--muted); width:140px;}

  /* ===== Access / contact ===== */
  .contact{background:var(--ink-soft); color:var(--paper);}
  .contact .section-head h2{color:var(--paper);}
  .contact .section-head .num{color:var(--gold-soft);}
  .contact-grid{display:grid; grid-template-columns:1fr 1fr; gap:64px;}
  .contact-block .k{font-size:11px; color:var(--gold-soft); letter-spacing:0.15em; margin-bottom:8px;}
  .contact-block .v{font-size:16px; margin-bottom:32px; color:var(--paper);}
  .contact-block .v .en{display:block; font-size:11.5px; color:rgba(245,242,236,0.5); margin-top:4px;}

  .form-note{
    border:1px solid var(--line);
    padding:28px 28px;
    font-size:13.5px;
    color:rgba(245,242,236,0.7);
    line-height:1.9;
  }
  .form-note .lbl{color:var(--gold-soft); font-size:11px; letter-spacing:0.1em; margin-bottom:10px; display:block;}

  fieldset{border:none; margin-top:20px;}
  .field{margin-bottom:18px;}
  .field label{display:block; font-size:11.5px; color:var(--gold-soft); letter-spacing:0.08em; margin-bottom:8px;}
  .field input, .field textarea{
    width:100%;
    background:rgba(245,242,236,0.04);
    border:1px solid var(--line);
    color:var(--paper);
    padding:12px 14px;
    font-size:14px;
    font-family:"Noto Sans JP",sans-serif;
  }
  .field textarea{resize:vertical; min-height:90px;}
  .field input:focus, .field textarea:focus{outline:none; border-color:var(--gold);}
  .submit-btn{
    margin-top:8px;
    background:var(--gold);
    color:var(--ink);
    border:none;
    padding:14px 36px;
    font-size:13px;
    letter-spacing:0.1em;
    cursor:pointer;
    transition:background 0.25s;
  }
  .submit-btn:hover{background:var(--gold-soft);}

  /* ===== Footer ===== */
  footer{
    background:var(--ink);
    color:rgba(245,242,236,0.5);
    padding:40px 28px;
    text-align:center;
    font-size:12px;
    letter-spacing:0.05em;
    border-top:1px solid var(--line);
  }
  footer .seal{margin:0 auto 16px;}

  /* ===== Reveal animation ===== */
  .reveal{opacity:0; transform:translateY(16px); transition:opacity 0.7s ease, transform 0.7s ease;}
  .reveal.in{opacity:1; transform:translateY(0);}

  @media (prefers-reduced-motion: reduce){
    .reveal{transition:none; opacity:1; transform:none;}
    html{scroll-behavior:auto;}
  }

  @media (max-width:860px){
    nav ul{display:none;}
    .menu-toggle{display:block;}
    .info-grid, .contact-grid{grid-template-columns:1fr; gap:40px;}
    .biz-grid{grid-template-columns:1fr;}
    .registry-row{grid-template-columns:140px 1fr;}
    .hero-meta{gap:28px;}
    .officer-card .seal-big{display:none;}
  }

  .sh-tight{margin-bottom:28px;}
  .mail-card{border:1px solid var(--line); padding:32px 28px;}
  .mail-card .k{font-size:11px; color:var(--gold-soft); letter-spacing:0.15em; margin-bottom:10px;}
  .mail-card .mail{font-size:20px; color:var(--paper); border-bottom:1px solid var(--gold); padding-bottom:2px; word-break:break-all;}
  .mail-card .mail-note{margin-top:18px; font-size:13.5px; color:rgba(245,242,236,0.7);}