:root{
    --blue:#1E6FD0; --blue-d:#0A3A66; --navy:#0A2E52;
    --orange:#F39200; --gold:#F0C060; --red:#E0301E; --red-d:#C2261A;
    --ink:#2A2118; --muted:#6E6358; --line:#F0E2C6;
    --cream:#FFF7E8; --cream2:#FFEFD2; --white:#fff;
    --radius:22px; --shadow:0 12px 28px rgba(10,58,102,.12);
    --shadow-warm:0 12px 28px rgba(243,146,0,.18);
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{font-size:18px}
  body{
    font-family:"Hiragino Maru Gothic ProN","Hiragino Maru Gothic Pro","Rounded Mplus 1c","Noto Sans JP",system-ui,sans-serif;
    color:var(--ink); line-height:1.8; background:var(--white); -webkit-font-smoothing:antialiased;
  }
  .wrap{max-width:1080px;margin:0 auto;padding:0 24px}
  section{padding:84px 0;position:relative}
  /* chunky outlined heading like the logo */
  .display{font-weight:900;letter-spacing:.02em;
    -webkit-text-stroke:0;
    text-shadow:3px 3px 0 #fff, -1px -1px 0 #fff, 4px 5px 0 rgba(10,58,102,.18);}
  /* 装飾ラベル（クリック不可・ワンポイント）：フラットなタグ風 */
  .eyebrow{display:inline-block;background:transparent;color:var(--blue);font-weight:900;
    font-size:1.5rem;padding:6px 18px 6px 20px;border-radius:0;letter-spacing:.05em;
    border-left:10px solid var(--gold);
    text-shadow:2px 3px 0 rgba(10,58,102,.18), 0 2px 5px rgba(0,0,0,.14)}
  h2.sec{font-size:2.2rem;text-align:center;color:var(--navy);margin-bottom:10px}
  .sec-sub{text-align:center;color:var(--muted);margin-bottom:50px;font-weight:700}
  /* CTAボタン（クリック可）：押せる立体感＋矢印＋押下アニメ */
  .btn{display:inline-flex;align-items:center;gap:12px;cursor:pointer;
    font-weight:900;text-decoration:none;border-radius:999px;border:none;
    padding:17px 38px;font-size:1.1rem;transition:transform .1s, box-shadow .1s}
  .btn:after{content:"";width:14px;height:14px;border-right:3px solid currentColor;
    border-top:3px solid currentColor;transform:rotate(45deg);margin-left:2px;opacity:.9}
  .btn-o{background:linear-gradient(180deg,#FFB23E,var(--orange));color:#fff;
    box-shadow:0 7px 0 #c87600, 0 16px 22px rgba(243,146,0,.4)}
  .btn-o:hover{transform:translateY(-3px)}
  .btn-o:active{transform:translateY(5px);box-shadow:0 2px 0 #c87600,0 6px 10px rgba(243,146,0,.4)}
  .btn-b{background:linear-gradient(180deg,#3D8BE6,var(--blue));color:#fff;
    box-shadow:0 7px 0 var(--blue-d),0 16px 22px rgba(30,111,208,.35)}
  .btn-b:hover{transform:translateY(-3px)}
  .btn-b:active{transform:translateY(5px);box-shadow:0 2px 0 var(--blue-d),0 6px 10px rgba(30,111,208,.35)}

  /* header */
  header{position:sticky;top:0;z-index:60;background:rgba(255,247,232,.95);
    backdrop-filter:blur(8px);border-bottom:3px solid var(--gold)}
  .nav{display:flex;align-items:center;justify-content:space-between;height:74px}
  .nav{height:88px}
  .nav .logo{height:54px}
  .nav .btn{padding:11px 26px;font-size:.92rem}

  /* hero */
  .hero{background:
      radial-gradient(circle at 80% 18%, #FFE9B8 0, transparent 40%),
      linear-gradient(165deg,#FFF7E8 0%,#FFEFD2 60%,#FFE3C0 100%);
    overflow:hidden}
  .hero:before{content:"";position:absolute;inset:0;
    background-image:radial-gradient(rgba(243,146,0,.10) 2px, transparent 2px);
    background-size:26px 26px;opacity:.6}
  .hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:24px;align-items:center;
    padding:54px 24px 64px;position:relative;z-index:2}
  .hero h1{font-size:3.1rem;line-height:1.32;color:var(--navy);margin:20px 0 18px}
  .hero h1 .o{color:var(--orange)}
  .hero h1 .r{color:var(--red)}
  .hero .lead{font-size:1.15rem;color:#4d4236;font-weight:700;margin-bottom:28px}
  .hero .cta-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
  .hero .sub-note{font-size:.85rem;color:var(--muted);margin-top:14px;font-weight:700}
  .hero-visual{position:relative;display:flex;flex-direction:column;align-items:center}
  .hero-visual img{width:108%;max-width:520px;filter:drop-shadow(0 18px 24px rgba(10,58,102,.22));
    animation:floaty 4s ease-in-out infinite}
  @keyframes floaty{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
  /* speech bubble */
  .bubble{position:absolute;top:6%;left:-4%;background:#fff;border:3px solid var(--blue);
    color:var(--blue);font-weight:900;padding:12px 18px;border-radius:18px;
    box-shadow:0 8px 0 rgba(30,111,208,.18);transform:rotate(-4deg);font-size:1rem;z-index:3}
  .bubble:after{content:"";position:absolute;bottom:-14px;left:30px;border:8px solid transparent;
    border-top-color:#fff;filter:drop-shadow(0 3px 0 var(--blue))}
  .chara-name{margin-top:30px;color:var(--ink);font-weight:700;font-size:1rem}

  /* wave divider */
  .wave{display:block;width:100%;height:60px}

  /* problems — speech style */
  .prob{background:#fff}
  .cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
  .card{background:var(--cream);border:3px solid var(--line);border-radius:var(--radius);
    padding:30px 24px;text-align:center;box-shadow:var(--shadow)}
  .card .ic{width:74px;height:74px;border-radius:50%;background:#fff;border:3px solid var(--gold);
    display:grid;place-items:center;margin:0 auto 16px}
  .card .ic svg{width:36px;height:36px;stroke:var(--orange);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
  .card h3{font-size:1.18rem;color:var(--navy);margin-bottom:8px}
  .card p{color:var(--muted);font-size:.94rem;font-weight:600}

  /* concept */
  .concept{background:linear-gradient(135deg,var(--blue),#2E86C8);color:#fff;text-align:center;overflow:hidden}
  .concept:before{content:"";position:absolute;inset:0;
    background-image:radial-gradient(rgba(255,255,255,.08) 2px,transparent 2px);background-size:28px 28px}
  .concept .wrap{position:relative;z-index:2}
  .concept .eyebrow{background:transparent;color:#fff;border-left-color:var(--gold)}
  .concept h2{color:#fff;font-size:2.5rem;margin:18px 0 14px;
    text-shadow:0 4px 0 var(--navy), 2px 2px 6px rgba(0,0,0,.45);
    -webkit-text-stroke:3px var(--navy);paint-order:stroke fill}
  .concept h2 .y{color:var(--gold)}
  .concept p{font-size:1.12rem;opacity:.96;max-width:680px;margin:0 auto;font-weight:700}
  .concept .pills{display:flex;gap:14px;justify-content:center;margin-top:30px;flex-wrap:wrap}
  .concept .pill{background:rgba(255,255,255,.15);border:2px solid rgba(255,255,255,.5);
    padding:11px 24px;border-radius:999px;font-weight:900}

  /* about */
  .about .wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:40px;align-items:center}
  .about .pic{position:relative;text-align:center}
  .about .pic img{width:78%;max-width:300px;filter:drop-shadow(0 14px 20px rgba(10,58,102,.2))}
  .about h2{text-align:left;color:var(--navy);font-size:1.9rem;margin-bottom:14px}
  .about .lead{color:var(--muted);font-weight:600}
  .check{margin-top:18px;list-style:none}
  .check li{padding:9px 0 9px 38px;position:relative;font-weight:700;color:#3d3328}
  .check li:before{content:"";position:absolute;left:0;top:11px;width:24px;height:24px;border-radius:50%;
    background:var(--gold);}
  .check li:after{content:"✓";position:absolute;left:6px;top:7px;color:#fff;font-weight:900;font-size:.9rem}

  /* flow */
  .flow{background:var(--cream)}
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;align-items:stretch}
  .step{background:#fff;border:3px solid var(--line);border-radius:var(--radius);
    padding:28px 18px;text-align:center;box-shadow:var(--shadow);position:relative}
  .step .num{width:44px;height:44px;border-radius:50%;background:var(--orange);color:#fff;
    font-weight:900;display:grid;place-items:center;margin:0 auto 14px;box-shadow:0 4px 0 #c87600;font-size:1.1rem}
  .step h4{font-size:1.05rem;color:var(--navy);margin-bottom:6px}
  .step p{font-size:.88rem;color:var(--muted);font-weight:600}
  .step:not(:last-child):after{content:"";position:absolute;right:-18px;top:50%;transform:translateY(-50%);
    width:0;height:0;border-top:13px solid transparent;border-bottom:13px solid transparent;
    border-left:14px solid var(--gold);z-index:5}

  /* stats */
  .stats{background:#fff}
  .stats-head{text-align:center;font-weight:900;font-size:3.4rem;color:var(--navy);
    line-height:1.25;margin-bottom:8px;letter-spacing:.01em}
  .stats-head .r8{color:var(--red);font-size:1.25em;
    text-shadow:3px 3px 0 #fff,0 5px 0 rgba(224,48,30,.25)}
  .stat-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px}
  .stat{background:linear-gradient(160deg,#fff,var(--cream));border:3px solid var(--gold);
    border-radius:var(--radius);padding:32px 18px;text-align:center;box-shadow:var(--shadow-warm)}
  .stat .big{font-size:4rem;font-weight:900;color:var(--red);line-height:1;text-shadow:2px 2px 0 #fff}
  .stat .big small{font-size:1.3rem;color:var(--orange)}
  .stat .lab{color:var(--muted);margin-top:10px;font-weight:700}
  .note{text-align:center;color:#b6a98f;font-size:.82rem;margin-top:22px;font-weight:600}

  /* features */
  .feat{background:var(--cream)}
  .feat .card{background:#fff}
  .feat .ic{border-color:var(--blue)}
  .feat .ic svg{stroke:var(--blue)}

  /* security */
  .secu{background:#fff}
  .secu .ic{border-color:var(--red)}
  .secu .ic svg{stroke:var(--red)}
  .secu .req{color:var(--red-d);font-weight:800}

  .feat .cards,.secu .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .compare .wrap,.faq .wrap{min-width:0}
  .table-scroll{overflow-x:auto;border:2px solid var(--line);border-radius:8px}
  .table-scroll:focus-visible,.faq summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
  .compare table{border-collapse:collapse;width:100%;min-width:900px;font-size:.85rem}
  .compare th,.compare td{padding:16px;vertical-align:top;text-align:left;border-bottom:1px solid var(--line)}
  .compare thead th{background:var(--navy);color:#fff}
  .compare tbody th{background:var(--cream);width:160px;color:var(--navy)}
  .compare tbody td:nth-child(2){background:var(--cream2);font-weight:700}
  .table-note{display:block;margin-top:6px;font-size:.75rem;font-weight:500;color:var(--muted)}
  .compare .note{text-align:left;color:var(--muted)}
  .faq{background:var(--cream)}
  .faq .wrap{max-width:840px}
  .faq details{border-bottom:2px solid var(--line);padding:20px 0}
  .faq summary{cursor:pointer;font-weight:800;color:var(--navy)}
  .faq details p{margin-top:16px;color:var(--muted);font-size:.94rem}

  /* roadmap */
  .road{background:linear-gradient(135deg,#FFEFD2,#FFE3C0)}
  .road .steps{grid-template-columns:repeat(3,1fr)}
  .road .step{background:#fff}
  .road .step .num{background:var(--blue);box-shadow:0 4px 0 var(--blue-d)}

  /* cta */
  .cta{background:linear-gradient(135deg,var(--orange),#FFB23E);color:#fff;text-align:center;overflow:hidden}
  .cta .wrap{position:relative;z-index:2}
  .cta img{width:150px;filter:drop-shadow(0 10px 16px rgba(10,58,102,.25));margin-bottom:6px}
  .cta h2{color:#fff;font-size:2.2rem;margin-bottom:10px;text-shadow:2px 2px 0 rgba(194,118,0,.5)}
  .cta p{font-weight:700;opacity:.96;margin-bottom:26px}
  .cta .btn-b{box-shadow:0 6px 0 var(--blue-d),0 16px 24px rgba(10,46,82,.3)}

  footer{background:var(--navy);color:#aebfce;padding:36px 0;font-size:.85rem}
  footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;align-items:center}
  footer a{color:#aebfce;text-decoration:none;margin-left:18px;font-weight:700}
  footer .logo{height:44px}

  @media(max-width:820px){
    .hero .wrap,.about .wrap,.stat-row{grid-template-columns:1fr}
    .hero-visual{order:-1}
    .cards,.feat .cards,.secu .cards,.steps,.road .steps{grid-template-columns:1fr}
    .step:not(:last-child):after{border:9px solid transparent;border-top-color:var(--gold);
      right:50%;top:auto;bottom:-16px;transform:translateX(50%)}
    .hero h1{font-size:2.2rem}
    .about h2{text-align:center}
    h2.sec{font-size:1.7rem}
    .concept h2{font-size:1.9rem}
    .stats-head{font-size:2rem}
  }
  @media(max-width:480px){
    .wrap{padding-left:18px;padding-right:18px}
    .nav{gap:10px;height:76px}
    .nav .logo{width:45%;height:auto;min-width:0}
    .nav .btn{padding:10px 12px;font-size:.75rem;gap:6px;white-space:nowrap}
    .nav .btn:after{width:10px;height:10px}
    .hero-visual img{width:100%}
    .hero .eyebrow{font-size:1.15rem}
    .bubble{left:0}
    .cta h2{font-size:1.8rem}
    footer .logo{max-width:100%;height:auto;max-height:44px}
  }