:root{
    --ink:#101010; --mid:#5B5B61; --soft:#9A9AA2; --faint:#C8C8CE;
    --bg:#F4F4F7; --card:#FFFFFF; --line:#EAEAEF;
    --grad:linear-gradient(135deg,#F4A58C 0%,#BD9AD6 50%,#93A7E8 100%);
    --good:#1FAE63; --warn:#E8821E;
    --shadow:0 12px 40px rgba(26,26,46,.08);
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Noto Sans JP",sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;line-height:1.5}
  .wrap{max-width:1080px;margin:0 auto;padding:0 22px}
  a{color:inherit;text-decoration:none}
  .grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

  /* nav */
  nav{position:sticky;top:0;z-index:50;backdrop-filter:saturate(1.4) blur(14px);background:rgba(244,244,247,.78);border-bottom:1px solid var(--line)}
  nav .wrap{display:flex;align-items:center;height:64px;gap:10px}
  .brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:18px;letter-spacing:-.3px}
  .brand img{width:26px;height:26px}
  .nav-cta{margin-left:auto;background:var(--ink);color:#fff;font-weight:800;font-size:14px;padding:10px 18px;border-radius:999px}

  /* hero */
  .hero{padding:78px 0 40px;text-align:center}
  .kick{font-size:13px;font-weight:800;letter-spacing:1.5px;color:var(--soft)}
  h1{font-size:clamp(34px,6vw,60px);font-weight:800;letter-spacing:-1.5px;line-height:1.08;margin:14px 0 0}
  .lead{font-size:clamp(16px,2.4vw,20px);color:var(--mid);font-weight:500;margin:20px auto 0;max-width:620px;line-height:1.6}
  .cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:32px}
  .btn{display:inline-flex;align-items:center;gap:9px;font-weight:800;border-radius:999px;padding:16px 26px;font-size:16px}
  .btn-dark{background:var(--ink);color:#fff;box-shadow:var(--shadow)}
  .btn-ghost{background:var(--card);color:var(--ink);border:1px solid var(--line)}
  .btn small{font-weight:600;opacity:.7;font-size:11px;display:block;line-height:1.1}
  .note-soon{font-size:12.5px;color:var(--soft);margin-top:14px;font-weight:600}
  /* App Store バッジ（公式風） */
  .appbadge{display:inline-flex;align-items:center;gap:11px;background:#000;color:#fff;border-radius:13px;padding:10px 18px;box-shadow:var(--shadow)}
  .appbadge svg{width:23px;height:23px;fill:#fff;flex-shrink:0}
  .appbadge small{font-size:10px;display:block;line-height:1.15;opacity:.92;font-weight:500;letter-spacing:.2px}
  .appbadge b{font-size:19px;line-height:1.1;font-weight:600;letter-spacing:-.3px}
  .appbadge.sm{padding:7px 13px} .appbadge.sm b{font-size:15px} .appbadge.sm small{font-size:8.5px}

  /* phone mock */
  .phone-stage{position:relative;width:300px;max-width:86vw;margin:54px auto 0}
  .bubble{position:absolute;background:#fff;border-radius:14px;padding:8px 13px;box-shadow:0 10px 30px rgba(26,26,46,.16);font-weight:800;font-size:13px;z-index:3;white-space:nowrap}
  .bubble small{display:block;font-size:9px;letter-spacing:1px;color:var(--soft);font-weight:800}
  .bubble.b1{top:64px;left:-40px} .bubble.b2{top:150px;right:-46px} .bubble.b3{top:250px;left:-34px}
  .bubble .o{color:var(--warn)} .bubble .g{color:var(--good)}
  @media(max-width:560px){.bubble.b1{left:-8px}.bubble.b2{right:-8px}.bubble.b3{left:-8px}}
  .phone{width:300px;max-width:86vw;background:#0d0d0f;border-radius:42px;padding:11px;box-shadow:0 40px 90px rgba(26,26,46,.22)}
  .screen{background:var(--bg);border-radius:32px;overflow:hidden;aspect-ratio:300/620;position:relative}
  .sc-photo{height:62%;background:linear-gradient(160deg,#caa6c9,#9fb0d8 60%,#b9c4e6);position:relative}
  .sc-photo .ovl{position:absolute;left:14px;bottom:12px;color:#fff;font-weight:800;font-size:13px;text-shadow:0 1px 4px rgba(0,0,0,.5)}
  .sc-photo .score{position:absolute;right:12px;bottom:12px;background:rgba(0,0,0,.5);border-radius:14px;padding:6px 12px;text-align:center;color:#fff}
  .sc-photo .score b{display:block;font-size:22px;line-height:1}
  .sc-photo .score span{font-size:8px;letter-spacing:1.5px;opacity:.8}
  .sc-stat{display:flex;align-items:center;gap:8px;padding:13px 16px;font-weight:800;font-size:14px;background:#fff}
  .sc-stat .o{color:var(--warn)} .sc-stat .dot{color:var(--faint)}
  .sc-next{margin:12px;border-radius:18px;padding:14px;background:linear-gradient(135deg,#FCEFEA,#EAF0FA);display:flex;gap:11px;align-items:center}
  .sc-next .ic{width:38px;height:38px;border-radius:11px;background:var(--grad);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900}
  .sc-next .t small{font-size:9px;letter-spacing:1px;color:var(--soft);font-weight:800}
  .sc-next .t b{font-size:13px}

  /* sections */
  section{padding:64px 0}
  .sec-kick{font-size:13px;font-weight:800;letter-spacing:1.5px;color:var(--soft);text-align:center}
  h2{font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-1px;text-align:center;margin-top:12px;line-height:1.15}
  .sub2{text-align:center;color:var(--mid);max-width:560px;margin:16px auto 0;font-size:16px;line-height:1.6;font-weight:500}

  .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
  .step{background:var(--card);border-radius:24px;padding:26px;box-shadow:var(--shadow)}
  .step .n{width:34px;height:34px;border-radius:11px;background:var(--ink);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:15px}
  .step h3{font-size:18px;margin-top:16px;font-weight:800}
  .step p{color:var(--mid);font-size:14.5px;margin-top:8px;line-height:1.6}

  .feats{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
  .feat{background:var(--card);border-radius:24px;padding:28px;box-shadow:var(--shadow)}
  .feat .ic{width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:22px}
  .feat h3{font-size:18.5px;margin-top:18px;font-weight:800;letter-spacing:-.3px}
  .feat p{color:var(--mid);font-size:14.5px;margin-top:9px;line-height:1.65}

  /* tier */
  .tier-wrap{background:var(--ink);border-radius:30px;padding:48px 30px;text-align:center;margin-top:44px;color:#fff}
  .tier-wrap h2{color:#fff}
  .tier-bar{display:flex;gap:8px;max-width:560px;margin:34px auto 0}
  .tier-bar .t{flex:1;text-align:center}
  .tier-bar .t .b{height:8px;border-radius:4px}
  .tier-bar .t span{font-size:11px;font-weight:700;color:rgba(255,255,255,.6);margin-top:8px;display:block}
  .tier-bar .t.on span{color:#fff}

  /* deepdive showcase */
  .dd{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;margin-top:44px}
  .dd .tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
  .dd .tags span{background:var(--card);border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:13px;font-weight:700}
  .dd-card{background:var(--card);border-radius:24px;padding:22px;box-shadow:var(--shadow)}
  .dd-row{display:flex;align-items:center;gap:10px;padding:11px 0;border-top:1px solid var(--line)}
  .dd-row:first-of-type{border-top:0}
  .dd-row .lbl{width:64px;font-size:13px;font-weight:700;color:var(--soft)}
  .dd-row .track{flex:1;height:8px;border-radius:4px;background:var(--bg);overflow:hidden}
  .dd-row .fill{height:8px;border-radius:4px}
  .dd-row .v{width:28px;text-align:right;font-weight:800;font-size:13px}

  /* pricing */
  .price{display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:760px;margin:44px auto 0}
  .pcard{background:var(--card);border-radius:24px;padding:30px;box-shadow:var(--shadow)}
  .pcard.pro{position:relative;overflow:hidden}
  .pcard.pro::before{content:"";position:absolute;inset:0;background:var(--grad);opacity:.10}
  .pcard h3{font-size:20px;font-weight:800;position:relative}
  .pcard .pr{font-size:30px;font-weight:800;margin-top:6px;position:relative;letter-spacing:-1px}
  .pcard ul{list-style:none;margin-top:18px;position:relative}
  .pcard li{padding:7px 0;color:var(--mid);font-size:14.5px;font-weight:500}
  .pcard li::before{content:"✓ ";color:var(--good);font-weight:900}

  /* final */
  .final{text-align:center;padding:80px 0}
  .final h2{margin-bottom:26px}

  footer{border-top:1px solid var(--line);padding:40px 0;color:var(--soft);font-size:13px}
  footer .wrap{display:flex;flex-wrap:wrap;gap:18px;align-items:center}
  footer .disc{flex-basis:100%;font-size:12px;color:var(--faint);line-height:1.6;margin-top:8px}
  footer a{color:var(--soft);font-weight:600}

  /* FAQ */
  .faq{max-width:760px;margin:36px auto 0;display:flex;flex-direction:column;gap:12px;text-align:left}
  .faq details{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px 20px;box-shadow:var(--shadow)}
  .faq summary{font-weight:800;font-size:16px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
  .faq summary::-webkit-details-marker{display:none}
  .faq summary::after{content:"+";color:var(--soft);font-weight:800;font-size:22px;line-height:1}
  .faq details[open] summary::after{content:"–"}
  .faq p{color:var(--mid);font-size:14.5px;line-height:1.75;margin-top:12px;font-weight:500}

  @media(max-width:760px){
    .steps,.feats,.price{grid-template-columns:1fr}
    .dd{grid-template-columns:1fr;gap:24px}
  }