/*
Theme Name: JTSIO Theme
Theme URI: https://jtsio.rsa.or.jp/
Author: USK AGI
Description: 一般社団法人 日本テクノ安全性能評価機構（JTSI）の静的プロトタイプを移植した独立クラシックテーマ。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.6
Requires PHP: 8.0
License: Proprietary
Text Domain: jtsio-theme
*/
:root{
    --bg:#f7f5f1; --surface:#ffffff; --surface-alt:#efece4; --border:#ddd8cc;
    --text:#20211f; --muted:#63645e; --accent:#9a6b2c; --accent-ink:#fbf5ec;
    --sans: -apple-system, "Hiragino Sans", "Yu Gothic", "Noto Sans JP", "Segoe UI", sans-serif;
    --serif: "Hiragino Mincho ProN", "Yu Mincho", "Georgia", serif;
    --mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;
  }
  @media (prefers-color-scheme: dark){
    :root{ --bg:#15171c; --surface:#1b1e24; --surface-alt:#20232a; --border:#2c2f37; --text:#eceae4; --muted:#9a9da8; --accent:#d9a35c; --accent-ink:#1b1500; }
  }
  :root[data-theme="dark"]{ --bg:#15171c; --surface:#1b1e24; --surface-alt:#20232a; --border:#2c2f37; --text:#eceae4; --muted:#9a9da8; --accent:#d9a35c; --accent-ink:#1b1500; }
  :root[data-theme="light"]{ --bg:#f7f5f1; --surface:#ffffff; --surface-alt:#efece4; --border:#ddd8cc; --text:#20211f; --muted:#63645e; --accent:#9a6b2c; --accent-ink:#fbf5ec; }

  *{box-sizing:border-box;}
  html,body{margin:0; padding:0;}
  body{background:var(--bg); color:var(--text); font-family:var(--sans); line-height:1.8; -webkit-font-smoothing:antialiased;}
  a{color:inherit;}
  img{max-width:100%; display:block;}

  .wrap{max-width:1040px; margin:0 auto; padding-left:6vw; padding-right:6vw;}
  @media (min-width:1200px){ .wrap{padding-left:0; padding-right:0;} }

  /* ---------- nav ---------- */
  header.site-nav{position:relative; z-index:3;}
  .navrow{display:flex; align-items:center; justify-content:space-between; padding:26px 6vw;}
  .navrow .mark{display:flex; align-items:center; gap:10px; font-family:var(--serif); font-size:16px; letter-spacing:.04em; text-decoration:none;}
  .navrow .mark img{flex:none; width:30px; height:auto;}
  .navrow .wordmark{display:inline-flex; flex-direction:column; line-height:1.3; color:var(--text);}
  .navrow .byline{font-family:var(--mono); font-size:9px; letter-spacing:.06em; color:var(--muted); font-weight:400; margin-top:2px;}
  .navrow .right{display:flex; align-items:center; gap:26px;}
  .navrow .links{display:flex; align-items:center; gap:30px; font-size:13px; color:var(--muted);}
  .navrow .links a{text-decoration:none;}
  .navrow .links a:hover{color:var(--text);}
  .navrow .utils{display:flex; align-items:center; gap:8px;}
  .util-btn{font-family:var(--mono); font-size:11px; letter-spacing:.05em; color:var(--muted); background:none;
    border:1px solid var(--border); padding:6px 11px; cursor:pointer; border-radius:2px; line-height:1;}
  .util-btn:hover{color:var(--text); border-color:var(--text);}
  .util-btn[aria-pressed="true"]{color:var(--accent-ink); background:var(--accent); border-color:var(--accent);}
  @media (max-width:680px){ .navrow .links{display:none;} }

  /* ---------- hero ---------- */
  .hero{position:relative; overflow:hidden; background:var(--surface-alt);}
  .hero-inner{position:relative; z-index:2; padding:96px 6vw 100px; display:grid; grid-template-columns:1.15fr .85fr; gap:48px; align-items:center;}
  .eyebrow{font-family:var(--mono); font-size:11.5px; letter-spacing:.16em; text-transform:uppercase; color:var(--accent); margin:0 0 22px;}
  .hero-tag{display:inline-flex; align-items:center; gap:9px; margin-bottom:20px; padding:7px 14px 7px 7px; border:1px solid var(--border); border-radius:999px; background:var(--surface);}
  .hero-tag .dot{width:7px; height:7px; border-radius:50%; background:var(--accent); flex:none;}
  .hero-tag span{font-family:var(--mono); font-size:11px; letter-spacing:.03em; color:var(--muted);}
  h1{font-size:clamp(30px,4.6vw,50px); line-height:1.42; font-weight:700; margin:0 0 26px; text-wrap:balance; letter-spacing:-.01em;}
  /* ---------- 文字の解読演出：ノイズ文字から本来の文字へ解決していく。
     見出しに限らずすべての文字要素に統一適用し、スクロールで画面に入るたび再生する。 */
  [data-decode].is-decoding{color:var(--accent);}
  @media (prefers-reduced-motion:reduce){ [data-decode]{transition:none;} }
  .hero p.lede{font-size:16px; color:var(--muted); max-width:48ch; margin:0 0 34px;}
  .cta-row{display:flex; gap:14px; flex-wrap:wrap; margin-bottom:38px;}
  .btn{display:inline-block; font-size:14px; padding:13px 26px; text-decoration:none; border-radius:2px; border:1px solid transparent;}
  .btn-primary{background:var(--accent); color:var(--accent-ink); font-weight:700;}
  .btn-ghost{border-color:var(--border); color:var(--text);}
  .keyword-row{display:flex; flex-wrap:wrap; gap:10px;}
  .keyword{display:flex; align-items:center; gap:10px; padding:9px 14px; border:1px solid var(--border); border-radius:2px; background:var(--surface);}
  .keyword .icon{font-family:var(--mono); font-size:11px; color:var(--accent); letter-spacing:.02em;}
  .keyword strong{font-size:13px; font-weight:700;}
  .keyword span{font-family:var(--mono); font-size:10px; color:var(--muted); margin-left:2px;}

  .hero-copy{position:relative;}
  .hero-copy-content{position:relative; z-index:1;}
  /* 見出しの裏でゆっくり回転する幾何学装飾（同心円+放射ライン、ロゴの8方向構成を抽象化） */
  .hero-geo{position:absolute; z-index:0; top:50%; left:38%; width:720px; height:720px; transform:translate(-50%,-50%); overflow:visible; pointer-events:none;}
  .geo-ring{position:absolute; inset:0;}
  .geo-ring circle, .geo-ring line{fill:none; stroke:var(--accent); vector-effect:non-scaling-stroke;}
  .geo-ring--a{opacity:.16; animation:spin 150s linear infinite;}
  .geo-ring--a circle, .geo-ring--a line{stroke-width:1;}
  .geo-ring--b{inset:14%; opacity:.12; animation:spin 110s linear infinite reverse;}
  .geo-ring--b circle{stroke-width:.8;}
  .geo-ring--c{inset:28%; opacity:.09; animation:spin 80s linear infinite;}
  .geo-ring--c circle{stroke-width:.6;}
  @media (max-width:980px){ .hero-geo{width:560px; height:560px; left:44%;} }
  @media (max-width:760px){ .hero-geo{width:380px; height:380px; top:36%; left:50%;} }
  @media (prefers-reduced-motion:reduce){ .geo-ring--a,.geo-ring--b,.geo-ring--c{animation:none;} }

  .hero-mark{display:flex; align-items:center; justify-content:center;}
  .mark-frame{position:relative; width:100%; max-width:260px; aspect-ratio:1; display:grid; place-items:center;}
  .mark-frame .ring{position:absolute; inset:6%; border-radius:50%; border:1px dashed var(--border); animation:spin 60s linear infinite;}
  .mark-frame .panel{position:relative; width:78%; aspect-ratio:1; border-radius:4px; background:var(--surface); border:1px solid var(--border);
    display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px; padding:20px;}
  .mark-frame .panel img{width:52%; height:auto;}
  .mark-frame .panel .word{font-family:var(--mono); font-size:10px; letter-spacing:.2em; color:var(--muted); text-align:center;}
  @keyframes spin{to{transform:rotate(360deg);}}
  @media (prefers-reduced-motion:reduce){ .mark-frame .ring{animation:none;} }
  @media (max-width:760px){ .hero-inner{grid-template-columns:1fr;} .hero-mark{order:-1; margin-bottom:8px;} .mark-frame{max-width:180px;} }

  /* ---------- statement ---------- */
  .statement{padding:110px 6vw; text-align:center;}
  .statement .mark-row{display:flex; justify-content:center; margin-bottom:26px;}
  .statement .mark-row img{width:40px; height:auto;}
  .statement blockquote{font-family:var(--serif); font-size:clamp(17px,1.7vw,20px); line-height:2.15; font-weight:500; margin:0 auto; max-width:42ch; color:var(--text);}
  .statement .notice-highlight{max-width:54ch; margin:38px auto 0; padding:22px 26px; border-left:3px solid var(--accent); background:var(--surface); text-align:left; border-radius:0 2px 2px 0;}
  .statement .notice-highlight p{font-size:13.5px; color:var(--muted); margin:0; line-height:1.9;}

  /* ---------- sections ---------- */
  section.block{padding:100px 6vw; max-width:1040px; margin:0 auto;}
  section.block + section.block,.statement + section.block{border-top:1px solid var(--border);}
  .block-head{max-width:56ch; margin-bottom:52px;}
  .block-head .eyebrow{margin-bottom:14px;}
  h2{font-size:clamp(22px,2.8vw,28px); margin:0 0 16px; font-weight:700; text-wrap:balance;}
  .block-head p{color:var(--muted); font-size:15px; margin:0;}

  .services{display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--border); border:1px solid var(--border);}
  .service{background:var(--surface); padding:32px 30px;}
  .service .idx{font-family:var(--mono); font-size:11px; color:var(--accent); margin-bottom:16px;}
  .service h3{font-size:17px; margin:0 0 12px;}
  .service p{font-size:14px; color:var(--muted); margin:0; line-height:1.85;}
  @media (max-width:680px){ .services{grid-template-columns:1fr;} }

  .roadmap-label{font-family:var(--mono); font-size:11.5px; letter-spacing:.08em; color:var(--muted); margin-bottom:28px;}
  .steps{display:grid; grid-template-columns:repeat(2,1fr); position:relative; gap:32px 40px;}
  .steps::before{content:""; position:absolute; top:6px; left:0; right:0; height:1px; background:var(--border);}
  .step{padding-top:28px; position:relative;}
  .step::before{content:""; position:absolute; top:0; left:0; width:13px; height:13px; border-radius:50%; background:var(--surface); border:2px solid var(--accent);}
  .step h4{font-size:15.5px; margin:0 0 10px;}
  .step p{font-size:13.5px; color:var(--muted); margin:0; line-height:1.85;}
  @media (max-width:680px){ .steps{grid-template-columns:1fr; row-gap:32px;} }

  .company{display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:start;}
  dl.facts{margin:0; display:grid; grid-template-columns:auto 1fr; gap:16px 22px; font-size:14.5px;}
  dl.facts dt{color:var(--muted); font-family:var(--mono); font-size:11px; letter-spacing:.05em; white-space:nowrap; padding-top:2px;}
  dl.facts dd{margin:0;}
  dl.facts a{color:var(--text); text-decoration:none; border-bottom:1px solid var(--border);}
  dl.facts a:hover{color:var(--accent); border-color:var(--accent);}
  @media (max-width:680px){ .company{grid-template-columns:1fr; gap:32px;} }

  .brand-mock{position:relative; aspect-ratio:16/10; overflow:hidden; background:var(--surface-alt); border:1px solid var(--border);}
  .brand-mock img{width:100%; height:100%; object-fit:cover; display:block;}
  .media-wide{width:100%; aspect-ratio:21/9; object-fit:cover; border:1px solid var(--border); border-radius:2px; margin-bottom:44px; display:block;}
  .step-photo{width:100%; aspect-ratio:16/10; object-fit:cover; border:1px solid var(--border); border-radius:2px; margin-bottom:18px; display:block;}
  /* 出典の異なる写真の色調をパレットに合わせて統一する（セピア寄りのduotone処理） */
  .media-wide, .brand-mock img{
    filter:grayscale(.55) sepia(.32) saturate(1.35) brightness(.92) contrast(1.04);
  }
  @media (prefers-color-scheme: dark){
    .media-wide, .brand-mock img{ filter:grayscale(.55) sepia(.32) saturate(1.2) brightness(.72) contrast(1.08); }
  }
  :root[data-theme="dark"] .media-wide, :root[data-theme="dark"] .brand-mock img{
    filter:grayscale(.55) sepia(.32) saturate(1.2) brightness(.72) contrast(1.08);
  }
  :root[data-theme="light"] .media-wide, :root[data-theme="light"] .brand-mock img{
    filter:grayscale(.55) sepia(.32) saturate(1.35) brightness(.92) contrast(1.04);
  }

  .cta-block{text-align:center;}
  .cta-block h2{margin-bottom:16px;}
  .cta-block p{color:var(--muted); font-size:15px; max-width:44ch; margin:0 auto 32px;}

  .contact-form{display:grid; grid-template-columns:1fr 1fr; gap:20px 24px; margin-top:44px; text-align:left; max-width:640px; margin-left:auto; margin-right:auto;}
  .contact-form .field{display:flex; flex-direction:column; gap:8px;}
  .contact-form .field-wide{grid-column:1/-1;}
  .contact-form label{font-family:var(--mono); font-size:11px; letter-spacing:.05em; color:var(--muted);}
  .contact-form .req{color:var(--accent);}
  .contact-form input, .contact-form select, .contact-form textarea{
    font:inherit; font-size:14px; padding:11px 13px; border:1px solid var(--border); border-radius:2px;
    background:var(--surface); color:var(--text); width:100%;
  }
  .contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus{outline:none; border-color:var(--accent);}
  .contact-form textarea{resize:vertical; min-height:90px; font-family:inherit;}
  .contact-form button{grid-column:1/-1; justify-self:center; margin-top:8px; cursor:pointer;}
  @media (max-width:640px){ .contact-form{grid-template-columns:1fr;} }

  .contact-direct{display:grid; gap:10px; max-width:420px; margin:0 auto 8px; text-align:left; font-size:13.5px;}
  .contact-direct div{display:grid; grid-template-columns:70px 1fr; gap:10px;}
  .contact-direct span{font-family:var(--mono); font-size:11px; color:var(--muted); padding-top:1px;}
  .contact-direct a{color:var(--text); text-decoration:none; border-bottom:1px solid var(--border);}
  .contact-direct a:hover{color:var(--accent); border-color:var(--accent);}

  footer{padding:44px 6vw; font-family:var(--mono); font-size:11px; color:var(--muted); display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; border-top:1px solid var(--border);}