/*
 * common.css
 * 全ページ共通：リセット、基本タイポグラフィ、ヘッダー、フッター、ボタン、共通カード。
 * 将来 index.html を index.php に変更しても、相対パスのまま利用できます。
 */

:root{
      --navy-950:#030713;
      --navy-900:#071224;
      --navy-850:#0b1830;
      --navy-800:#10213e;
      --navy-700:#183154;
      --ink:#101726;
      --ivory:#f6f0e4;
      --paper:#fffaf0;
      --paper-2:#efe5d2;
      --gold:#d6b46a;
      --gold-2:#f0d596;
      --gold-3:#9c7431;
      --cyan:#83c7d9;
      --cyan-2:#d7f1f5;
      --white:#fff;
      --muted:#aeb8cc;
      --muted-dark:#5f6878;
      --danger:#de8f7d;
      --success:#9dc6a3;
      --border:rgba(214,180,106,.25);
      --border-light:rgba(14,28,53,.13);
      --shadow:0 24px 70px rgba(0,0,0,.22);
      --shadow-light:0 24px 70px rgba(18,25,40,.12);
      --radius:24px;
      --radius-sm:16px;
      --max:1180px;
      --font-serif:"Yu Mincho","Hiragino Mincho ProN","Hiragino Mincho Pro","Noto Serif JP",Georgia,serif;
      --font-sans:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic","YuGothic","Noto Sans JP","Segoe UI",sans-serif;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth;background:var(--navy-950)}
    body{
      margin:0;
      color:#edf1f8;
      background:
        radial-gradient(circle at 16% 2%,rgba(131,199,217,.12),transparent 28rem),
        radial-gradient(circle at 83% 7%,rgba(214,180,106,.12),transparent 31rem),
        var(--navy-950);
      font-family:var(--font-sans);
      font-size:16px;
      line-height:1.8;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
      overflow-x:hidden;
    }
    body.menu-open{overflow:hidden}
    a{color:inherit;text-decoration:none}
    img,svg{display:block;max-width:100%}
    button,input{font:inherit}
    button{color:inherit}
    ::selection{background:rgba(214,180,106,.32);color:#fff}

    .skip-link{
      position:fixed;left:16px;top:12px;z-index:9999;
      padding:10px 14px;border-radius:10px;background:var(--paper);color:var(--ink);
      transform:translateY(-160%);transition:.2s;
    }
    .skip-link:focus{transform:none}
    :focus-visible{outline:2px solid var(--gold-2);outline-offset:4px}

    .container{width:min(calc(100% - 40px),var(--max));margin-inline:auto}
    .section{position:relative;padding:112px 0}
    .section.compact{padding:78px 0}
    .section.light{color:var(--ink);background:var(--ivory)}
    .section.paper{color:var(--ink);background:var(--paper)}
    .section.dark{background:var(--navy-900)}
    .section.deep{background:var(--navy-950)}
    .section-divider{
      width:min(90%,920px);height:1px;margin:0 auto;
      background:linear-gradient(90deg,transparent,rgba(214,180,106,.48),transparent)
    }

    .eyebrow{
      display:inline-flex;align-items:center;gap:10px;
      color:var(--gold-2);font-size:12px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;
    }
    .eyebrow::before,.eyebrow::after{content:"";width:26px;height:1px;background:currentColor;opacity:.65}
    .section-head{max-width:850px;margin:0 auto 54px;text-align:center}
    .section-head.left{max-width:720px;margin-left:0;text-align:left}
    .section-head h2{
      margin:18px 0 16px;font-family:var(--font-serif);font-size:clamp(34px,5vw,62px);
      font-weight:500;line-height:1.3;letter-spacing:.04em;
    }
    .section-head p{margin:0;color:var(--muted);font-size:clamp(16px,2vw,19px)}
    .light .section-head p,.paper .section-head p{color:var(--muted-dark)}
    .gold{color:var(--gold-2)}
    .accent{color:var(--cyan)}
    .nowrap{white-space:nowrap}
    .note{font-size:12px;line-height:1.8;opacity:.72}
    .center{text-align:center}

    .btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
    .btn-row.center{justify-content:center}
    .btn{
      min-height:56px;display:inline-flex;align-items:center;justify-content:center;gap:10px;
      padding:13px 25px;border:1px solid transparent;border-radius:999px;
      font-weight:700;letter-spacing:.04em;line-height:1.4;transition:transform .25s,box-shadow .25s,background .25s,border-color .25s,color .25s;
      cursor:pointer;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn.primary{
      color:#101522;background:linear-gradient(135deg,var(--gold-2),var(--gold));
      box-shadow:0 16px 44px rgba(214,180,106,.23);
    }
    .btn.primary:hover{box-shadow:0 20px 56px rgba(214,180,106,.34)}
    .btn.secondary{border-color:rgba(240,213,150,.5);background:rgba(255,255,255,.04);color:#fff}
    .btn.secondary:hover{background:rgba(240,213,150,.1);border-color:var(--gold-2)}
    .btn.ink{color:#fff;background:var(--navy-850);box-shadow:0 14px 38px rgba(7,18,36,.16)}
    .btn.ghost-ink{color:var(--ink);border-color:rgba(16,23,38,.26);background:transparent}
    .btn.small{min-height:44px;padding:9px 18px;font-size:14px}
    .btn .arrow{font-size:1.25em;line-height:1}

    /* Header */
    .site-header{
      position:fixed;inset:0 0 auto;z-index:1000;
      border-bottom:1px solid transparent;transition:background .25s,border-color .25s,box-shadow .25s;
    }
    .site-header.scrolled{
      background:rgba(3,7,19,.87);border-color:rgba(214,180,106,.18);
      -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 10px 32px rgba(0,0,0,.15);
    }
    .nav{height:78px;display:flex;align-items:center;gap:clamp(10px,1.35vw,24px)}
    .brand{display:flex;align-items:center;gap:12px;flex:0 1 auto;min-width:0}
    .brand-mark{
      width:38px;height:38px;display:grid;place-items:center;border:1px solid rgba(214,180,106,.55);border-radius:50%;
      color:var(--gold-2);font-family:var(--font-serif);font-size:19px;position:relative;
    }
    .brand-mark::before,.brand-mark::after{content:"";position:absolute;inset:7px;border:1px solid rgba(131,199,217,.35);transform:rotate(45deg)}
    .brand-mark::after{transform:rotate(0);border-radius:50%}
    .brand-copy{line-height:1.25}
    .brand-ja{font-family:var(--font-serif);font-size:clamp(13px,1.16vw,16px);letter-spacing:.08em;white-space:nowrap}
    .brand-en{display:block;color:var(--gold);font-size:clamp(7px,.7vw,9px);font-weight:700;letter-spacing:clamp(.08em,.14vw,.2em);white-space:nowrap}
    .nav-links{margin-left:auto;display:flex;align-items:center;gap:clamp(8px,1.15vw,20px);min-width:0}
    .nav-links a{color:#cfd6e4;font-size:clamp(10px,.93vw,13px);font-weight:600;white-space:nowrap;transition:color .2s}
    .nav-links a:hover{color:var(--gold-2)}
    .language-switch{display:flex;padding:3px;border:1px solid rgba(214,180,106,.3);border-radius:999px;background:rgba(255,255,255,.035)}
    .language-switch button{
      min-width:34px;border:0;border-radius:999px;padding:5px 8px;background:transparent;color:#aeb8cc;
      font-size:10px;font-weight:800;letter-spacing:.1em;cursor:pointer;
    }
    .language-switch button.active{color:#111827;background:var(--gold-2)}
    .menu-btn{display:none;margin-left:auto;width:46px;height:46px;border:1px solid rgba(214,180,106,.3);border-radius:50%;background:rgba(255,255,255,.04);padding:0;cursor:pointer}
    .menu-btn span{display:block;width:20px;height:1px;margin:5px auto;background:#fff;transition:.25s}

    /* Hero */
    .hero{
      min-height:100svh;display:flex;align-items:center;position:relative;isolation:isolate;padding:138px 0 86px;overflow:hidden;
      background:
        linear-gradient(180deg,rgba(3,7,19,.1),var(--navy-950)),
        radial-gradient(circle at 74% 36%,rgba(214,180,106,.18),transparent 24rem),
        radial-gradient(circle at 24% 30%,rgba(131,199,217,.13),transparent 26rem),
        #040a17;
    }
    .hero::before{
      content:"";position:absolute;inset:-10%;z-index:-2;opacity:.27;
      background-image:
        linear-gradient(rgba(214,180,106,.08) 1px,transparent 1px),
        linear-gradient(90deg,rgba(214,180,106,.08) 1px,transparent 1px);
      background-size:68px 68px;
      -webkit-mask-image:radial-gradient(circle at 68% 36%,#000,transparent 62%);mask-image:radial-gradient(circle at 68% 36%,#000,transparent 62%);
      transform:perspective(700px) rotateX(58deg) translateY(-8%);
    }
    .hero::after{
      content:"";position:absolute;left:-10%;right:-10%;bottom:-1px;height:170px;z-index:-1;
      background:linear-gradient(180deg,transparent,var(--navy-950));
    }
    .hero-grid{display:grid;grid-template-columns:minmax(0,1.06fr) minmax(360px,.94fr);align-items:center;gap:58px}
    .hero-kicker{
      display:inline-flex;align-items:center;gap:10px;margin-bottom:24px;padding:8px 14px;border:1px solid rgba(214,180,106,.3);border-radius:999px;
      color:var(--gold-2);background:rgba(214,180,106,.055);font-size:11px;font-weight:800;letter-spacing:.18em;
    }
    .hero-kicker i{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 16px var(--cyan)}
    .hero h1{
      margin:0;font-family:var(--font-serif);font-size:clamp(48px,7.2vw,92px);font-weight:500;line-height:1.12;letter-spacing:.035em;
      text-wrap:balance;
    }
    .hero h1 small{display:block;margin-top:13px;color:var(--gold-2);font-family:var(--font-sans);font-size:.19em;font-weight:700;letter-spacing:.25em;text-transform:uppercase}
    .hero-lead{max-width:690px;margin:28px 0 30px;color:#d9dfeb;font-size:clamp(17px,2.1vw,22px);line-height:1.95}
    .hero-lead strong{color:#fff;font-weight:750}
    .hero-proof{display:flex;flex-wrap:wrap;gap:10px;margin:29px 0 0}
    .hero-proof span{
      display:inline-flex;align-items:center;gap:8px;padding:7px 11px;border:1px solid rgba(255,255,255,.1);border-radius:999px;
      color:#bac4d5;background:rgba(255,255,255,.035);font-size:12px;
    }
    .hero-proof span::before{content:"✦";color:var(--gold)}
    .hero-visual{position:relative;min-height:590px;display:grid;place-items:center}
    .cosmos{
      width:min(100%,540px);aspect-ratio:1;position:relative;display:grid;place-items:center;
      filter:drop-shadow(0 34px 60px rgba(0,0,0,.4));
    }
    .cosmos::before{
      content:"";position:absolute;inset:4%;border-radius:50%;
      background:radial-gradient(circle at 43% 38%,rgba(255,255,255,.82) 0 1%,rgba(240,213,150,.18) 2% 7%,rgba(131,199,217,.1) 19%,rgba(6,17,36,.62) 46%,rgba(3,7,19,.15) 64%,transparent 67%);
      box-shadow:inset 0 0 80px rgba(131,199,217,.13),0 0 100px rgba(214,180,106,.08);
    }
    .orbit{position:absolute;border:1px solid rgba(214,180,106,.28);border-radius:50%}
    .orbit.o1{inset:2%;animation:spin 46s linear infinite}
    .orbit.o2{inset:12%;border-color:rgba(131,199,217,.28);animation:spinReverse 32s linear infinite}
    .orbit.o3{inset:23%;border-style:dashed;animation:spin 24s linear infinite}
    .orbit.o4{inset:34%;border-color:rgba(240,213,150,.5)}
    .orbit::before,.orbit::after{content:"";position:absolute;width:8px;height:8px;border-radius:50%;background:var(--gold-2);box-shadow:0 0 16px var(--gold)}
    .orbit::before{left:12%;top:18%}.orbit::after{right:8%;bottom:26%;background:var(--cyan);box-shadow:0 0 16px var(--cyan)}
    .axis{position:absolute;left:50%;top:8%;bottom:8%;width:1px;background:linear-gradient(transparent,rgba(240,213,150,.45),transparent)}
    .axis.x{transform:rotate(90deg)}
    .axis.d1{transform:rotate(45deg)}
    .axis.d2{transform:rotate(-45deg)}
    .core{
      width:116px;aspect-ratio:1;display:grid;place-items:center;z-index:3;border-radius:50%;
      border:1px solid rgba(240,213,150,.68);background:radial-gradient(circle,rgba(240,213,150,.24),rgba(7,18,36,.88) 62%);
      box-shadow:0 0 60px rgba(214,180,106,.2),inset 0 0 25px rgba(131,199,217,.13);
      font-family:var(--font-serif);color:var(--gold-2);font-size:34px;
    }
    .visual-card{
      position:absolute;width:230px;padding:18px 19px;border:1px solid rgba(214,180,106,.3);border-radius:18px;
      background:rgba(7,18,36,.75);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:var(--shadow);
    }
    .visual-card strong{display:block;color:#fff;font-family:var(--font-serif);font-size:17px;font-weight:500}
    .visual-card small{display:block;margin-top:4px;color:#aeb8cc;font-size:11px;line-height:1.6}
    .visual-card.v1{top:9%;right:-2%}
    .visual-card.v2{bottom:14%;left:-3%}
    .visual-card .mini{display:inline-block;margin-bottom:8px;color:var(--cyan);font-size:9px;font-weight:800;letter-spacing:.18em;text-transform:uppercase}
    @keyframes spin{to{transform:rotate(360deg)}}
    @keyframes spinReverse{to{transform:rotate(-360deg)}}

    .metrics{
      position:relative;margin-top:-1px;padding:24px 0;border-top:1px solid rgba(214,180,106,.12);border-bottom:1px solid rgba(214,180,106,.12);
      background:rgba(7,18,36,.8);
    }
    .metrics-grid{display:grid;grid-template-columns:repeat(4,1fr)}
    .metric{padding:10px 26px;text-align:center;border-right:1px solid rgba(214,180,106,.15)}
    .metric:last-child{border-right:0}
    .metric strong{display:block;color:var(--gold-2);font-family:var(--font-serif);font-size:22px;font-weight:500}
    .metric span{display:block;margin-top:3px;color:#9eabc1;font-size:11px;letter-spacing:.08em}

    /* Story / contrast */
    .contrast-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px}
    .contrast-card{position:relative;padding:36px;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
    .contrast-card:first-child{background:rgba(255,255,255,.025)}
    .contrast-card.academy{background:linear-gradient(145deg,rgba(214,180,106,.12),rgba(131,199,217,.06))}
    .contrast-card .num{color:var(--gold);font-family:var(--font-serif);font-size:14px;letter-spacing:.2em}
    .contrast-card h3{margin:15px 0 12px;font-family:var(--font-serif);font-size:30px;font-weight:500;line-height:1.45}
    .contrast-card p{margin:0;color:var(--muted)}
    .contrast-list{display:grid;gap:12px;margin-top:25px}
    .contrast-list div{display:flex;gap:11px;color:#d6dce7;font-size:14px}
    .contrast-list div::before{content:"—";color:var(--gold)}

    /* Loop */
    .loop-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
    .loop-step{
      min-height:245px;position:relative;padding:28px 23px;border:1px solid var(--border-light);border-radius:22px;background:#fff;
      box-shadow:var(--shadow-light);overflow:hidden;
    }
    .loop-step::after{content:"";position:absolute;inset:auto -40px -60px auto;width:130px;height:130px;border:1px solid rgba(214,180,106,.22);border-radius:50%}
    .loop-step .step-no{color:var(--gold-3);font-size:11px;font-weight:800;letter-spacing:.16em}
    .loop-step h3{margin:18px 0 11px;font-family:var(--font-serif);font-size:23px;font-weight:600}
    .loop-step p{margin:0;color:var(--muted-dark);font-size:14px;line-height:1.8}
    .loop-step .icon{width:45px;height:45px;margin-top:26px;color:var(--navy-700)}

    /* Features */
    .feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .feature-card{
      min-height:270px;padding:28px;border:1px solid rgba(214,180,106,.2);border-radius:22px;background:linear-gradient(155deg,rgba(255,255,255,.055),rgba(255,255,255,.018));
      transition:transform .25s,border-color .25s,background .25s;
    }
    .feature-card:hover{transform:translateY(-5px);border-color:rgba(240,213,150,.5);background:linear-gradient(155deg,rgba(214,180,106,.095),rgba(131,199,217,.035))}
    .feature-icon{width:48px;height:48px;margin-bottom:28px;color:var(--gold-2)}
    .feature-card h3{margin:0 0 12px;font-family:var(--font-serif);font-size:22px;font-weight:500}
    .feature-card p{margin:0;color:var(--muted);font-size:14px}
    .status{
      display:inline-flex;margin-top:18px;padding:4px 9px;border:1px solid rgba(131,199,217,.28);border-radius:999px;
      color:#bce7ef;background:rgba(131,199,217,.055);font-size:10px;font-weight:700;letter-spacing:.08em;
    }
    .status.planned{color:#ead6a7;border-color:rgba(214,180,106,.3);background:rgba(214,180,106,.055)}

    /* Knowledge engine */
    .knowledge-grid{display:grid;grid-template-columns:.88fr 1.12fr;align-items:center;gap:68px}
    .knowledge-stage{position:relative;min-height:560px}
    .knowledge-stage::before{
      content:"";position:absolute;inset:8% 5%;border:1px solid rgba(214,180,106,.18);border-radius:50%;
      background:radial-gradient(circle,rgba(131,199,217,.1),transparent 64%);
    }
    .knowledge-node{
      position:absolute;width:235px;padding:20px;border:1px solid var(--border);border-radius:18px;background:rgba(7,18,36,.9);box-shadow:var(--shadow)
    }
    .knowledge-node b{display:block;color:var(--gold-2);font-family:var(--font-serif);font-size:18px;font-weight:500}
    .knowledge-node span{display:block;margin-top:5px;color:var(--muted);font-size:12px;line-height:1.6}
    .knowledge-node.n1{top:2%;left:8%}
    .knowledge-node.n2{top:33%;right:0}
    .knowledge-node.n3{bottom:2%;left:12%}
    .knowledge-core{
      position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:170px;aspect-ratio:1;display:grid;place-items:center;
      border:1px solid rgba(240,213,150,.6);border-radius:50%;background:radial-gradient(circle,rgba(214,180,106,.23),rgba(7,18,36,.96) 67%);
      color:var(--gold-2);font-family:var(--font-serif);text-align:center;line-height:1.5;box-shadow:0 0 70px rgba(214,180,106,.15)
    }
    .knowledge-line{position:absolute;height:1px;background:linear-gradient(90deg,transparent,rgba(214,180,106,.55),transparent);transform-origin:left center}
    .knowledge-line.l1{width:180px;left:29%;top:29%;transform:rotate(32deg)}
    .knowledge-line.l2{width:180px;left:51%;top:49%;transform:rotate(-13deg)}
    .knowledge-line.l3{width:190px;left:31%;top:70%;transform:rotate(-36deg)}
    .bullet-list{display:grid;gap:14px;margin:28px 0 0}
    .bullet-list div{display:flex;gap:13px;align-items:flex-start;color:#d7deeb}
    .bullet-list div::before{content:"✦";flex:0 0 auto;color:var(--gold);font-size:13px;margin-top:2px}

    /* Pro Lab */
    .lab-wrap{
      position:relative;padding:54px;border:1px solid rgba(214,180,106,.35);border-radius:32px;overflow:hidden;
      background:
        radial-gradient(circle at 90% 10%,rgba(214,180,106,.15),transparent 22rem),
        linear-gradient(135deg,#0a1830,#071224);
      box-shadow:var(--shadow);
    }
    .lab-wrap::before{content:"";position:absolute;right:-80px;bottom:-80px;width:360px;height:360px;border:1px solid rgba(131,199,217,.16);border-radius:50%;box-shadow:0 0 0 50px rgba(131,199,217,.025),0 0 0 100px rgba(214,180,106,.018)}
    .lab-grid{position:relative;z-index:1;display:grid;grid-template-columns:.88fr 1.12fr;gap:55px;align-items:start}
    .lab-badge{display:inline-flex;padding:7px 12px;border:1px solid rgba(214,180,106,.38);border-radius:999px;color:var(--gold-2);font-size:10px;font-weight:800;letter-spacing:.16em}
    .lab-wrap h2{margin:22px 0 18px;font-family:var(--font-serif);font-size:clamp(36px,5vw,60px);font-weight:500;line-height:1.35}
    .lab-wrap .lead{margin:0;color:#cfd7e6;font-size:17px}
    .lab-levels{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .lab-level{padding:23px;border:1px solid rgba(255,255,255,.1);border-radius:18px;background:rgba(255,255,255,.035)}
    .lab-level small{color:var(--cyan);font-size:10px;font-weight:800;letter-spacing:.12em}
    .lab-level h3{margin:8px 0 8px;font-family:var(--font-serif);font-size:22px;font-weight:500}
    .lab-level p{margin:0;color:#aeb8cc;font-size:13px}
    .ethics{margin-top:18px;padding:17px 18px;border-left:2px solid var(--gold);background:rgba(214,180,106,.055);color:#c9d1df;font-size:12px}

    /* Pro Multi-AI & Etymology Studio */
    .ai-studio-wrap{
      position:relative;padding:58px;border:1px solid rgba(131,199,217,.28);border-radius:34px;overflow:hidden;
      background:
        radial-gradient(circle at 12% 0%,rgba(131,199,217,.16),transparent 28rem),
        radial-gradient(circle at 92% 100%,rgba(214,180,106,.13),transparent 30rem),
        linear-gradient(145deg,#071224,#0b1b34 58%,#081426);
      box-shadow:var(--shadow)
    }
    .ai-studio-wrap::before{
      content:"";position:absolute;inset:0;pointer-events:none;opacity:.24;
      background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
      background-size:44px 44px;mask-image:linear-gradient(to bottom,black,transparent 90%)
    }
    .ai-studio-head{position:relative;z-index:1;max-width:930px;margin:0 auto 38px;text-align:center}
    .ai-studio-head h2{margin:20px 0 16px;font-family:var(--font-serif);font-size:clamp(36px,5vw,62px);font-weight:500;line-height:1.3}
    .ai-studio-head p{margin:0;color:#c6d0e0;font-size:17px}
    .ai-role-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin:0 0 24px}
    .ai-role{
      min-height:195px;padding:24px;border:1px solid rgba(255,255,255,.1);border-radius:21px;background:rgba(255,255,255,.035)
    }
    .ai-role .role-mark{width:42px;height:42px;display:grid;place-items:center;margin-bottom:17px;border:1px solid rgba(214,180,106,.45);border-radius:50%;color:var(--gold-2);font-family:var(--font-serif);font-size:19px}
    .ai-role:nth-child(2) .role-mark{border-color:rgba(131,199,217,.46);color:#bce7ef}
    .ai-role h3{margin:0 0 8px;font-family:var(--font-serif);font-size:21px;font-weight:500}
    .ai-role p{margin:0;color:#aeb8cc;font-size:13px}
    .ai-equation{position:relative;z-index:1;margin:0 0 28px;padding:15px 18px;border-left:2px solid var(--gold);background:rgba(214,180,106,.055);color:#d4dbea;text-align:center;font-size:14px}
    .ai-track-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .ai-track{padding:32px;border:1px solid rgba(255,255,255,.11);border-radius:24px;background:rgba(3,7,19,.38)}
    .ai-track .track-kicker{display:block;color:var(--cyan);font-size:10px;font-weight:800;letter-spacing:.15em}
    .ai-track.etymology .track-kicker{color:var(--gold-2)}
    .ai-track h3{margin:10px 0 10px;font-family:var(--font-serif);font-size:27px;font-weight:500;line-height:1.45}
    .ai-track>p{margin:0 0 20px;color:#b7c1d1;font-size:14px}
    .method-list{display:grid;gap:10px}
    .method-item{display:grid;grid-template-columns:58px 1fr;gap:13px;padding:13px 14px;border:1px solid rgba(255,255,255,.075);border-radius:15px;background:rgba(255,255,255,.025)}
    .method-item b{color:var(--gold-2);font-size:10px;letter-spacing:.09em}
    .ai-track:not(.etymology) .method-item b{color:#bce7ef}
    .method-item span{color:#d2d9e6;font-size:13px;line-height:1.65}
    .ai-output-title{position:relative;z-index:1;margin:30px 0 14px;color:var(--gold-2);font-size:11px;font-weight:800;letter-spacing:.14em;text-align:center}
    .ai-output-grid{position:relative;z-index:1;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
    .ai-output{padding:18px;border:1px solid rgba(214,180,106,.19);border-radius:16px;background:rgba(214,180,106,.035);text-align:center}
    .ai-output strong{display:block;margin-bottom:5px;font-family:var(--font-serif);font-size:17px;font-weight:500}
    .ai-output span{display:block;color:#aeb8cc;font-size:11px;line-height:1.6}
    .ai-governance-note{position:relative;z-index:1;margin-top:24px;padding:18px 20px;border:1px solid rgba(222,143,125,.22);border-radius:16px;background:rgba(222,143,125,.055);color:#ced5e1;font-size:12px}

    /* Curriculum */
    .curriculum{display:grid;gap:18px}
    .phase{
      display:grid;grid-template-columns:130px 1fr 1fr;gap:30px;align-items:start;padding:32px;
      border:1px solid var(--border-light);border-radius:22px;background:#fff;box-shadow:var(--shadow-light)
    }
    .phase-label{color:var(--gold-3);font-size:11px;font-weight:800;letter-spacing:.16em;text-transform:uppercase}
    .phase-label strong{display:block;margin-top:8px;color:var(--navy-850);font-family:var(--font-serif);font-size:27px;font-weight:600;letter-spacing:.02em}
    .phase h3{margin:0 0 10px;font-family:var(--font-serif);font-size:22px;font-weight:600}
    .phase p{margin:0;color:var(--muted-dark);font-size:14px}
    .phase ul{margin:12px 0 0;padding:0;list-style:none;color:var(--muted-dark);font-size:13px}
    .phase li{position:relative;padding-left:17px;margin:5px 0}
    .phase li::before{content:"•";position:absolute;left:0;color:var(--gold-3)}

    /* Plans */
    .plans-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
    .plan-card{
      position:relative;display:flex;flex-direction:column;padding:40px;border:1px solid var(--border-light);border-radius:28px;background:#fff;box-shadow:var(--shadow-light);overflow:hidden
    }
    .plan-card.pro{color:#eef2f8;border-color:rgba(214,180,106,.38);background:linear-gradient(150deg,#10213e,#071224);box-shadow:0 30px 80px rgba(5,12,24,.28)}
    .plan-card.pro::before{content:"";position:absolute;inset:auto -70px -90px auto;width:300px;height:300px;border-radius:50%;border:1px solid rgba(214,180,106,.22);box-shadow:0 0 0 45px rgba(214,180,106,.025),0 0 0 90px rgba(131,199,217,.018)}
    .plan-top{position:relative;z-index:1}
    .plan-tag{display:inline-flex;padding:5px 10px;border:1px solid rgba(16,23,38,.18);border-radius:999px;color:#4e596a;font-size:10px;font-weight:800;letter-spacing:.12em}
    .pro .plan-tag{color:var(--gold-2);border-color:rgba(214,180,106,.35)}
    .plan-card h3{margin:17px 0 5px;font-family:var(--font-serif);font-size:34px;font-weight:600;line-height:1.35}
    .plan-sub{min-height:52px;margin:0;color:var(--muted-dark);font-size:14px}
    .pro .plan-sub{color:#aeb8cc}
    .price{margin:28px 0 3px;font-family:var(--font-serif);font-size:48px;font-weight:600;line-height:1.2}
    .price small{font-family:var(--font-sans);font-size:13px;font-weight:700}
    .installment{margin:0 0 24px;color:var(--gold-3);font-size:14px;font-weight:750}
    .pro .installment{color:var(--gold-2)}
    .plan-list{position:relative;z-index:1;display:grid;gap:10px;margin:10px 0 30px;padding:0;list-style:none}
    .plan-list li{display:flex;gap:10px;align-items:flex-start;color:#384255;font-size:14px}
    .pro .plan-list li{color:#d8dfeb}
    .plan-list li::before{content:"✓";color:var(--gold-3);font-weight:900}
    .pro .plan-list li::before{color:var(--gold-2)}
    .plan-card .btn{position:relative;z-index:1;margin-top:auto;width:100%}
    .contract-note{margin-top:24px;padding:18px;border:1px solid rgba(16,23,38,.12);border-radius:16px;background:#f8f2e6;color:#535e6e;font-size:12px}
    .comparison-wrap{margin-top:38px;overflow:auto;border:1px solid var(--border-light);border-radius:22px;background:#fff;box-shadow:var(--shadow-light)}
    .comparison{width:100%;min-width:780px;border-collapse:collapse;color:var(--ink)}
    .comparison th,.comparison td{padding:18px 20px;border-bottom:1px solid rgba(16,23,38,.09);text-align:left;font-size:13px}
    .comparison th{background:#f6efe2;font-size:12px;letter-spacing:.06em}
    .comparison th:not(:first-child),.comparison td:not(:first-child){text-align:center}
    .comparison td:first-child{font-weight:700}
    .comparison tr:last-child td{border-bottom:0}
    .yes{color:#8b6629;font-weight:900}.no{color:#9aa1ad}.limited{color:#457787;font-weight:800}

    /* Who / Founder */
    .audience-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .audience-card{padding:34px;border:1px solid var(--border);border-radius:22px;background:rgba(255,255,255,.035)}
    .audience-card h3{margin:0 0 18px;font-family:var(--font-serif);font-size:27px;font-weight:500}
    .audience-card ul{display:grid;gap:12px;margin:0;padding:0;list-style:none;color:#cbd3e1;font-size:14px}
    .audience-card li{position:relative;padding-left:23px}
    .audience-card li::before{content:"○";position:absolute;left:0;color:var(--gold)}
    .audience-card.not{border-color:rgba(222,143,125,.2)}
    .audience-card.not li::before{content:"—";color:var(--danger)}

    .founder-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:54px;align-items:center}
    .founder-seal{
      width:min(100%,420px);aspect-ratio:1;display:grid;place-items:center;margin:auto;position:relative;border-radius:50%;
      border:1px solid rgba(214,180,106,.3);background:radial-gradient(circle,rgba(214,180,106,.12),transparent 63%);
    }
    .founder-seal::before,.founder-seal::after{content:"";position:absolute;inset:11%;border:1px solid rgba(131,199,217,.27);transform:rotate(45deg)}
    .founder-seal::after{inset:25%;border-radius:50%;transform:none}
    .founder-seal span{z-index:2;color:var(--gold-2);font-family:var(--font-serif);font-size:46px;text-align:center;line-height:1.3}
    .founder-seal small{display:block;color:#aeb8cc;font-family:var(--font-sans);font-size:10px;letter-spacing:.18em}

    /* Global */
    .global-wrap{
      padding:60px;border-radius:32px;color:#fff;overflow:hidden;position:relative;
      background:
        radial-gradient(circle at 18% 50%,rgba(131,199,217,.16),transparent 25rem),
        radial-gradient(circle at 86% 20%,rgba(214,180,106,.16),transparent 25rem),
        #071224;
      box-shadow:var(--shadow)
    }
    .global-wrap::before{content:"";position:absolute;inset:0;opacity:.18;background-image:radial-gradient(circle,rgba(255,255,255,.8) 0 1px,transparent 1.5px);background-size:55px 55px}
    .global-grid{position:relative;display:grid;grid-template-columns:1.02fr .98fr;gap:56px;align-items:center}
    .global-wrap h2{margin:17px 0 16px;font-family:var(--font-serif);font-size:clamp(38px,5vw,62px);font-weight:500;line-height:1.3}
    .global-wrap p{color:#cbd4e4}
    .global-points{display:grid;grid-template-columns:1fr 1fr;gap:13px}
    .global-point{padding:18px;border:1px solid rgba(255,255,255,.1);border-radius:16px;background:rgba(255,255,255,.035)}
    .global-point b{display:block;color:var(--gold-2);font-family:var(--font-serif);font-size:17px;font-weight:500}
    .global-point span{display:block;margin-top:4px;color:#9fabbe;font-size:11px;line-height:1.6}

    /* Team */
    .team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .team-card{padding:27px;border:1px solid var(--border-light);border-radius:20px;background:#fff;box-shadow:var(--shadow-light)}
    .team-card.lead{grid-column:span 2;display:grid;grid-template-columns:90px 1fr;gap:22px;align-items:center}
    .avatar{width:74px;aspect-ratio:1;display:grid;place-items:center;border:1px solid rgba(156,116,49,.28);border-radius:50%;background:linear-gradient(145deg,#f9f3e7,#ebe0cb);color:var(--gold-3);font-family:var(--font-serif);font-size:22px}
    .team-role{color:var(--gold-3);font-size:10px;font-weight:800;letter-spacing:.11em}
    .team-card h3{margin:7px 0 6px;font-family:var(--font-serif);font-size:23px;font-weight:600}
    .team-card p{margin:0;color:var(--muted-dark);font-size:13px;line-height:1.75}
    .team-list{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}
    .team-list span{padding:4px 8px;border-radius:999px;background:#f2eadc;color:#596273;font-size:10px}

    /* Enrollment */
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .entry-step{position:relative;padding:31px 25px;border:1px solid var(--border);border-radius:22px;background:rgba(255,255,255,.035)}
    .entry-step .n{color:var(--gold);font-family:var(--font-serif);font-size:38px;line-height:1}
    .entry-step h3{margin:22px 0 9px;font-family:var(--font-serif);font-size:21px;font-weight:500}
    .entry-step p{margin:0;color:var(--muted);font-size:13px}
    .entry-step::after{content:"→";position:absolute;right:-16px;top:42%;color:var(--gold);font-size:20px;z-index:2}
    .entry-step:last-child::after{display:none}

    /* FAQ */
    .faq{max-width:900px;margin:auto;display:grid;gap:12px}
    details{border:1px solid var(--border-light);border-radius:16px;background:#fff;overflow:hidden}
    summary{position:relative;padding:22px 58px 22px 24px;cursor:pointer;font-weight:750;list-style:none}
    summary::-webkit-details-marker{display:none}
    summary::after{content:"＋";position:absolute;right:23px;top:50%;transform:translateY(-50%);color:var(--gold-3);font-size:23px;font-weight:400}
    details[open] summary::after{content:"−"}
    details p{margin:0;padding:0 24px 23px;color:var(--muted-dark);font-size:14px}
    details p strong{color:var(--ink)}

    /* Final CTA */
    .final-cta{position:relative;overflow:hidden;text-align:center;padding:120px 0 132px;background:#030713}
    .final-cta::before{
      content:"";position:absolute;left:50%;top:50%;width:860px;aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;
      border:1px solid rgba(214,180,106,.17);box-shadow:0 0 0 70px rgba(214,180,106,.018),0 0 0 140px rgba(131,199,217,.012);
      background:radial-gradient(circle,rgba(214,180,106,.1),transparent 62%);
    }
    .final-inner{position:relative;max-width:900px;margin:auto}
    .final-cta h2{margin:20px 0 18px;font-family:var(--font-serif);font-size:clamp(42px,7vw,80px);font-weight:500;line-height:1.25}
    .final-cta p{margin:0 0 30px;color:#bdc7d8;font-size:18px}

    footer{padding:34px 0 48px;border-top:1px solid rgba(214,180,106,.13);background:#02050d;color:#8f9aaf}
    .footer-grid{display:flex;justify-content:space-between;gap:30px;align-items:flex-start}
    .footer-links{display:flex;flex-wrap:wrap;gap:15px 22px;font-size:11px}
    .footer-links a:hover{color:var(--gold-2)}
    .copyright{text-align:right;font-size:10px}

    .sticky-cta{display:none}
    .reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease}
    .reveal.in{opacity:1;transform:none}

    @media (prefers-reduced-motion:reduce){
      html{scroll-behavior:auto}
      *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
      .reveal{opacity:1;transform:none}
    }

    @media (max-width:1100px){
      .nav-links{gap:14px}.nav-links a{font-size:11px}
      .hero-grid{grid-template-columns:1fr .8fr;gap:24px}
      .hero-visual{min-height:490px}.visual-card{width:205px}.visual-card.v1{right:-6%}.visual-card.v2{left:-7%}
      .loop-grid{grid-template-columns:repeat(3,1fr)}
      .feature-grid{grid-template-columns:repeat(2,1fr)}
      .ai-role-grid{grid-template-columns:1fr 1fr}.ai-role:last-child{grid-column:1/-1}
      .ai-track-grid{grid-template-columns:1fr}.ai-output-grid{grid-template-columns:1fr 1fr}
      .ai-studio-wrap{padding:42px 30px}
      .team-grid{grid-template-columns:repeat(2,1fr)}
    }

    @media (max-width:1040px){
      .section{padding:88px 0}.section.compact{padding:62px 0}
      .nav-links,.nav>.btn,.nav>.language-switch{display:none}
      .menu-btn{display:block}
      .nav-links.mobile{
        display:flex;position:fixed;z-index:999;inset:78px 0 0;flex-direction:column;align-items:stretch;gap:0;
        height:calc(100svh - 78px);max-height:calc(100svh - 78px);padding:24px max(20px,calc((100vw - 720px)/2)) calc(30px + env(safe-area-inset-bottom));
        background:rgba(3,7,19,.985);border-top:1px solid rgba(214,180,106,.18);border-bottom:1px solid rgba(214,180,106,.28);
        -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);box-shadow:0 24px 54px rgba(0,0,0,.46);overflow-y:auto;overscroll-behavior:contain;
      }
      .nav-links.mobile a{width:100%;padding:16px 4px;border-bottom:1px solid rgba(255,255,255,.09);color:#eef2f8;font-size:15px;line-height:1.35}
      .nav-links.mobile .mobile-controls{display:block;width:100%;padding-top:24px}
      .nav-links.mobile .mobile-controls[hidden]{display:none}
      .nav-links.mobile .mobile-controls .btn{width:100%;max-width:480px;min-height:52px;font-size:14px}
      .nav-links.mobile .language-switch{display:flex}
      .menu-open .menu-btn span:nth-child(1){transform:translateY(6px) rotate(45deg)}
      .menu-open .menu-btn span:nth-child(2){opacity:0}
      .menu-open .menu-btn span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
      .hero{min-height:auto;padding-top:128px}
      .hero-grid{grid-template-columns:1fr;text-align:center}
      .hero-lead{margin-inline:auto}.btn-row{justify-content:center}.hero-proof{justify-content:center}
      .hero-visual{min-height:430px}.cosmos{width:440px}.visual-card.v1{right:1%}.visual-card.v2{left:1%}
      .metrics-grid{grid-template-columns:1fr 1fr}.metric:nth-child(2){border-right:0}.metric:nth-child(-n+2){border-bottom:1px solid rgba(214,180,106,.15)}
      .contrast-grid,.knowledge-grid,.lab-grid,.plans-grid,.founder-grid,.global-grid{grid-template-columns:1fr}
      .knowledge-stage{min-height:500px;order:2}
      .lab-wrap{padding:40px 28px}
      .phase{grid-template-columns:110px 1fr}.phase>div:last-child{grid-column:2}
      .steps{grid-template-columns:1fr 1fr}.entry-step:nth-child(2)::after{display:none}
      .team-card.lead{grid-column:span 2}
      .sticky-cta{
        display:flex;position:fixed;z-index:950;left:10px;right:10px;bottom:max(10px,env(safe-area-inset-bottom));gap:8px;padding:8px;
        border:1px solid rgba(214,180,106,.28);border-radius:18px;background:rgba(3,7,19,.9);-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);box-shadow:0 18px 50px rgba(0,0,0,.38);max-width:480px;margin-left:auto;
      }
      .sticky-cta .btn{min-height:46px;padding:10px 12px;font-size:12px}
      .sticky-cta .btn.primary{width:100%;margin:0px auto}
    }

    @media (max-width:640px){
      body{font-size:15px}
      .container{width:min(calc(100% - 28px),var(--max))}
      .section{padding:72px 0}.section.compact{padding:50px 0}
      .site-header .container{width:calc(100% - 22px)}
      .nav{height:68px}.nav-links.mobile{inset:68px 0 0}.brand-ja{font-size:14px}.brand-en{font-size:8px}.brand-mark{width:34px;height:34px}
      .hero{padding:112px 0 58px}
      .hero h1{font-size:clamp(42px,13vw,65px)}
      .hero h1 small{font-size:.17em;letter-spacing:.18em}
      .hero-lead{font-size:16px;line-height:1.9}
      .btn{width:100%;min-height:54px;padding-inline:18px}
      .hero-visual{min-height:350px;margin-top:10px}.cosmos{width:340px}.core{width:88px;font-size:25px}.visual-card{width:172px;padding:13px}.visual-card strong{font-size:14px}.visual-card small{font-size:9px}.visual-card.v1{top:2%;right:-4%}.visual-card.v2{bottom:3%;left:-4%}
      .metric{padding:10px 9px}.metric strong{font-size:18px}.metric span{font-size:9px}
      .section-head{margin-bottom:38px}.section-head h2{font-size:34px}.section-head p{font-size:15px}
      .contrast-card,.plan-card{padding:28px 23px}
      .contrast-card h3{font-size:25px}
      .loop-grid,.feature-grid,.lab-levels,.audience-grid,.global-points,.team-grid,.steps{grid-template-columns:1fr}
      .loop-step{min-height:auto}.feature-card{min-height:auto}
      .knowledge-stage{min-height:430px}.knowledge-node{width:180px;padding:14px}.knowledge-node b{font-size:14px}.knowledge-node span{font-size:9px}.knowledge-core{width:125px;font-size:13px}.knowledge-node.n1{left:0}.knowledge-node.n2{right:0}.knowledge-node.n3{left:0}
      .lab-wrap{padding:31px 20px}.lab-wrap h2{font-size:35px}.lab-level{padding:18px}
      .ai-studio-wrap{padding:31px 20px}.ai-studio-head h2{font-size:35px}.ai-role-grid,.ai-output-grid{grid-template-columns:1fr}.ai-role:last-child{grid-column:auto}.ai-track{padding:24px 18px}.method-item{grid-template-columns:1fr;gap:3px}
      .phase{grid-template-columns:1fr;padding:25px}.phase>div:last-child{grid-column:auto}
      .price{font-size:42px}
      .founder-seal{width:300px}.founder-seal span{font-size:34px}
      .global-wrap{padding:36px 22px}.global-wrap h2{font-size:36px}
      .team-card,.team-card.lead{grid-column:auto;display:block}.team-card.lead .avatar{margin-bottom:17px}
      .entry-step::after{display:none}
      .footer-grid{display:block}.copyright{margin-top:22px;text-align:left}
    }
  


    /* Public-safe styles for content created with the visual editor. */
    .profile-avatar{
      width:92px;height:92px;min-width:92px;border-radius:50%;overflow:hidden;
      display:grid;place-items:center;background:linear-gradient(145deg,rgba(214,180,106,.24),rgba(131,199,217,.16));
      border:1px solid rgba(214,180,106,.46);color:var(--gold-2);font-family:var(--font-serif);font-size:30px;
    }
    .profile-avatar img,.cms-media-frame img{
      width:100%;height:100%;display:block;object-fit:cover;object-position:50% 50%;transform-origin:center;
    }
    .team-card .profile-avatar{margin-bottom:17px}
    .team-card.lead .profile-avatar{margin-bottom:0}
    .cms-user-block .cms-split{
      display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:46px;align-items:center;
    }
    .cms-media-frame{
      min-height:340px;border-radius:var(--radius);overflow:hidden;background:
      radial-gradient(circle at 28% 20%,rgba(214,180,106,.18),transparent 35%),
      linear-gradient(145deg,var(--navy-850),var(--navy-700));border:1px solid var(--border);box-shadow:var(--shadow);
      display:grid;place-items:center;color:var(--gold-2);text-align:center;padding:22px;
    }
    .cms-media-frame.has-image{padding:0}
    .cms-media-frame .cms-media-hint{font-size:13px;letter-spacing:.08em;opacity:.82}
    .cms-custom-copy h2{font-family:var(--font-serif);font-size:clamp(34px,5vw,58px);line-height:1.28;margin:0 0 20px}
    .cms-custom-copy p{margin:0;color:inherit;opacity:.88}
    .cms-card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .cms-simple-card{padding:28px;border:1px solid var(--border);border-radius:var(--radius-sm);background:rgba(255,255,255,.045)}
    .paper .cms-simple-card,.light .cms-simple-card{border-color:var(--border-light);background:rgba(255,255,255,.62);box-shadow:var(--shadow-light)}
    .cms-simple-card h3{margin:0 0 12px;font-family:var(--font-serif);font-size:24px}
    .cms-simple-card p{margin:0;opacity:.8}
    .cms-custom-cta{
      padding:52px;border:1px solid var(--border);border-radius:var(--radius);text-align:center;background:
      radial-gradient(circle at 50% 0,rgba(214,180,106,.16),transparent 40%),rgba(255,255,255,.035)
    }
    .cms-custom-cta h2{font-family:var(--font-serif);font-size:clamp(34px,5vw,58px);line-height:1.25;margin:0 0 17px}
    .cms-custom-cta p{max-width:760px;margin:0 auto 26px;opacity:.82}
    .cms-added-profile-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .cms-added-profile{padding:27px;border-radius:var(--radius-sm);border:1px solid var(--border-light);background:rgba(255,255,255,.67);box-shadow:var(--shadow-light)}
    .cms-added-profile h3{font-family:var(--font-serif);font-size:25px;margin:13px 0 6px}
    .cms-added-profile p{margin:0;color:var(--muted-dark)}
    @media(max-width:900px){
      .cms-user-block .cms-split{grid-template-columns:1fr}.cms-card-grid,.cms-added-profile-grid{grid-template-columns:1fr 1fr}
      .team-card.lead .profile-avatar{margin-bottom:17px}
    }
    @media(max-width:640px){
      .cms-card-grid,.cms-added-profile-grid{grid-template-columns:1fr}.cms-custom-cta{padding:36px 22px}.cms-media-frame{min-height:280px}
    }
  


/* Public-safe generic components used by AI-generated LP blueprints. */
:root{
  --ai-primary:#071326;
  --ai-accent:#d6b46a;
  --ai-background:#050914;
  --ai-paper:#f4ead2;
  --ai-radius:24px;
  --ai-heading-font:"Yu Mincho","Hiragino Mincho ProN","Noto Serif JP",serif;
  --ai-body-font:"Yu Gothic","Hiragino Kaku Gothic ProN","Noto Sans JP",sans-serif;
}
.ai-gen-section{position:relative;overflow:hidden}
.ai-gen-section .section-head{max-width:900px}
.ai-gen-section .section-head.center{margin-inline:auto;text-align:center}
.ai-gen-hero{min-height:78vh;display:flex;align-items:center;background:
  radial-gradient(circle at 74% 20%,color-mix(in srgb,var(--ai-accent) 22%,transparent),transparent 32%),
  radial-gradient(circle at 13% 72%,rgba(56,116,180,.19),transparent 35%),
  linear-gradient(150deg,var(--ai-primary),var(--ai-background));color:#fff}
.ai-gen-hero::before{content:"";position:absolute;inset:-20%;background-image:
  linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
  linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);background-size:72px 72px;transform:rotate(9deg);pointer-events:none}
.ai-gen-hero .ai-gen-hero-inner{position:relative;z-index:1;max-width:980px;padding-block:clamp(84px,12vw,150px)}
.ai-gen-hero h1{max-width:980px;margin:18px 0 24px;font-family:var(--ai-heading-font);font-size:clamp(44px,7.7vw,96px);font-weight:500;line-height:1.13;letter-spacing:.01em}
.ai-gen-hero .lead{max-width:780px;margin:0;color:#d7dfec;font-size:clamp(17px,2.1vw,22px);line-height:1.9}
.ai-gen-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.ai-gen-actions .btn{min-width:190px}
.ai-gen-content-body{max-width:900px;margin:0 auto;color:var(--muted-dark,#4d5664);font-size:17px;line-height:2}
.ai-gen-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:34px}
.ai-gen-card{position:relative;padding:28px;border:1px solid rgba(20,31,48,.12);border-radius:var(--ai-radius);background:rgba(255,255,255,.86);box-shadow:0 16px 50px rgba(8,18,38,.07)}
.dark .ai-gen-card{border-color:rgba(255,255,255,.12);background:rgba(255,255,255,.055);box-shadow:none}
.ai-gen-card .label{display:inline-flex;align-items:center;min-height:26px;margin-bottom:15px;padding:3px 10px;border:1px solid color-mix(in srgb,var(--ai-accent) 50%,transparent);border-radius:999px;color:var(--ai-accent);font-size:10px;font-weight:800;letter-spacing:.12em}
.ai-gen-card h3{margin:0 0 10px;font-family:var(--ai-heading-font);font-size:23px;font-weight:500;line-height:1.45}
.ai-gen-card p{margin:0;color:var(--muted-dark,#536071);font-size:14px;line-height:1.85}
.dark .ai-gen-card p{color:#b9c5d6}
.ai-gen-card .price{display:block;margin:17px 0 4px;color:var(--ai-accent);font-family:var(--ai-heading-font);font-size:30px}
.ai-gen-card .note{display:block;color:#7b8796;font-size:11px;line-height:1.6}
.ai-gen-steps{counter-reset:step;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:34px}
.ai-gen-step{position:relative;padding:25px 22px;border-radius:var(--ai-radius);background:rgba(255,255,255,.86);border:1px solid rgba(20,31,48,.1)}
.ai-gen-step::before{counter-increment:step;content:counter(step,decimal-leading-zero);display:block;margin-bottom:15px;color:var(--ai-accent);font-family:var(--ai-heading-font);font-size:25px}
.ai-gen-step h3{margin:0 0 8px;font-family:var(--ai-heading-font);font-size:19px;font-weight:500}
.ai-gen-step p{margin:0;color:#626d7c;font-size:13px;line-height:1.75}
.ai-gen-pricing{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin-top:36px}
.ai-gen-pricing .ai-gen-card{padding:34px}
.ai-gen-pricing .ai-gen-card.featured{border-color:color-mix(in srgb,var(--ai-accent) 55%,transparent);box-shadow:0 24px 70px color-mix(in srgb,var(--ai-accent) 16%,transparent)}
.ai-gen-profile-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:34px}
.ai-gen-profile{padding:24px;border:1px solid rgba(20,31,48,.1);border-radius:var(--ai-radius);background:#fff;text-align:center}
.ai-gen-profile .avatar{width:112px;height:112px;margin:0 auto 17px;border-radius:50%;overflow:hidden;background:linear-gradient(135deg,#182a45,#d6b46a);display:grid;place-items:center;color:#fff;font-family:var(--ai-heading-font);font-size:28px}
.ai-gen-profile .avatar img{width:100%;height:100%;object-fit:cover}
.ai-gen-profile .role{display:block;margin-bottom:6px;color:var(--ai-accent);font-size:10px;font-weight:800;letter-spacing:.09em;text-transform:uppercase}
.ai-gen-profile h3{margin:0 0 8px;font-family:var(--ai-heading-font);font-size:21px;font-weight:500}
.ai-gen-profile p{margin:0;color:#626d7c;font-size:13px;line-height:1.75}
.ai-gen-testimonials{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:34px}
.ai-gen-quote{padding:30px;border-left:3px solid var(--ai-accent);border-radius:0 var(--ai-radius) var(--ai-radius) 0;background:rgba(255,255,255,.84)}
.ai-gen-quote p{margin:0 0 14px;font-family:var(--ai-heading-font);font-size:18px;line-height:1.85}
.ai-gen-quote cite{color:#697686;font-size:12px;font-style:normal}
.ai-gen-faq{display:grid;gap:12px;max-width:920px;margin:34px auto 0}
.ai-gen-faq details{border-radius:16px}
.ai-gen-cta{text-align:center;background:
  radial-gradient(circle at 50% 0,color-mix(in srgb,var(--ai-accent) 18%,transparent),transparent 40%),
  linear-gradient(145deg,var(--ai-primary),var(--ai-background));color:#fff}
.ai-gen-cta .container{max-width:920px}
.ai-gen-cta h2{margin:16px 0;font-family:var(--ai-heading-font);font-size:clamp(38px,6vw,68px);font-weight:500;line-height:1.25}
.ai-gen-cta p{max-width:760px;margin:0 auto;color:#c8d1df;font-size:17px;line-height:1.9}
.ai-gen-cta .ai-gen-actions{justify-content:center}
.ai-gen-legal{font-size:12px;color:#626d7c}
.ai-gen-legal .ai-gen-content-body{padding:22px;border:1px solid rgba(20,31,48,.11);border-radius:16px;background:rgba(255,255,255,.72);font-size:12px;line-height:1.9}
@media(max-width:980px){.ai-gen-grid,.ai-gen-profile-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ai-gen-steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:680px){.ai-gen-grid,.ai-gen-profile-grid,.ai-gen-pricing,.ai-gen-testimonials,.ai-gen-steps{grid-template-columns:1fr}.ai-gen-card,.ai-gen-pricing .ai-gen-card{padding:24px}.ai-gen-hero{min-height:auto}.ai-gen-actions .btn{width:100%}}


/* ==========================================================
   V12.2 OTSURU CLEAN | shared responsive contract
   - Header switches before links can wrap.
   - Footer reserves extra space only when the mobile sticky CTA exists.
   - 300px viewport remains usable without horizontal overflow.
   ========================================================== */
@media (max-width:1200px){
  .site-header .nav{gap:12px}
  .site-header .nav-links{gap:10px}
  .site-header .nav-links>a{font-size:11px}
  .site-header .nav>.btn{padding-inline:12px;font-size:11px}
}
@media (max-width:1200px) and (min-width:541px){
  .site-header .brand-en{display:block;font-size:8px;letter-spacing:.12em}
}
@media (max-width:720px){
  footer{padding-bottom:96px}
  .sticky-cta{justify-content:flex-start;padding:8px 10px calc(8px + env(safe-area-inset-bottom))}
  .sticky-cta .btn{width:100%;max-width:480px;min-width:0;margin:0;padding-inline:14px}
  body.menu-open .sticky-cta{opacity:0;transform:translateY(calc(100% + 28px));pointer-events:none}
}
@media (max-width:540px){
  .site-header .brand-en{display:none}
  .site-header .brand-ja{font-size:13px;letter-spacing:.04em}
}
@media (max-width:360px){
  .site-header .nav{height:72px;gap:8px}
  .site-header .brand{gap:8px}
  .site-header .brand-ja{font-size:12px}
  .site-header .brand-mark{width:31px;height:31px;font-size:15px}
  .site-header .menu-btn{width:42px;height:42px}
  .site-header .nav-links.mobile{inset:72px 0 0;height:calc(100svh - 72px);max-height:calc(100svh - 72px);padding-inline:16px}
}
@media (max-width:320px){
  .container{width:calc(100% - 20px)}
  .site-header .container{width:calc(100% - 16px)}
  .sticky-cta{left:6px;right:6px;padding-inline:6px}
  .sticky-cta .btn{font-size:12px}
}