:root{
    --bg:#ffffff;
    --paper:#F1FAF6;
    --ink:#191F29;
    --ink-soft:#566270;
    --ink-mute:#8A929C;
    --teal:#3E9A8C;
    --teal-deep:#2C766A;
    --mascot:#429185;
    --green:#1FB388;
    --purple:#6A3DE8;
    --purple-soft:#F1ECFE;
    --sun:#FFC94D;
    --line:#E8EDEB;
    --sh:0 12px 30px -14px rgba(25,31,41,.14);
    --sh-h:0 24px 50px -18px rgba(25,31,41,.22);
    --round:"M PLUS Rounded 1c",-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Helvetica Neue",Arial,sans-serif;
    --pop:"Poppins",var(--round);
    --maxw:1040px;
    --pad-x:clamp(20px,5vw,48px);
    --squircle:url("data:image/svg+xml,%0A%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20xml%3Aspace%3D%22preserve%22%20viewBox%3D%220%200%20230.5%20230.5%22%3E%0A%20%20%3Cpath%20fill-rule%3D%22evenodd%22%20stroke-linejoin%3D%22round%22%20stroke-miterlimit%3D%221.4%22%20clip-rule%3D%22evenodd%22%20d%3D%22M158.2%20230H64.1a320%20320%200%200%201-7-.1c-5%200-10-.5-15-1.3a50.8%2050.8%200%200%201-14.4-4.8%2048.2%2048.2%200%200%201-21-21%2050.9%2050.9%200%200%201-4.8-14.4%20100.7%20100.7%200%200%201-1.3-15v-7l-.1-8.2V64.1a320%20320%200%200%201%20.1-7c0-5%20.5-10%201.3-15a50.7%2050.7%200%200%201%204.8-14.4%2048.2%2048.2%200%200%201%2021-21%2051%2051%200%200%201%2014.4-4.8c5-.8%2010-1.2%2015-1.3a320%20320%200%200%201%207%200l8.2-.1h94.1a320%20320%200%200%201%207%20.1c5%200%2010%20.5%2015%201.3a52%2052%200%200%201%2014.4%204.8%2048.2%2048.2%200%200%201%2021%2021%2050.9%2050.9%200%200%201%204.8%2014.4c.8%205%201.2%2010%201.3%2015a320%20320%200%200%201%20.1%207v102.3l-.1%207c0%205-.5%2010-1.3%2015a50.7%2050.7%200%200%201-4.8%2014.4%2048.2%2048.2%200%200%201-21%2021%2050.8%2050.8%200%200%201-14.4%204.8c-5%20.8-10%201.2-15%201.3a320%20320%200%200%201-7%200l-8.2.1z%22%2F%3E%0A%3C%2Fsvg%3E%0A");
  }

  *{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;background:var(--bg);color:var(--ink);
    font-family:var(--round);font-size:16px;line-height:1.85;
    font-feature-settings:"palt" 1;-webkit-font-smoothing:antialiased;
    text-rendering:optimizeLegibility;overflow-x:hidden;
  }
  a{color:inherit}
  .shell{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad-x)}

  /* ---------- nav ---------- */
  .nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 0}
  .brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
  .brand .mascot{width:34px;height:34px;display:block}
  .brand b{font-family:var(--pop);font-weight:700;font-size:19px;color:var(--ink);letter-spacing:-.01em}
  .nav-links{display:flex;gap:8px}
  .nav-links a{
    font-weight:700;font-size:14px;color:var(--ink-soft);text-decoration:none;
    padding:9px 16px;border-radius:999px;transition:background .2s ease,color .2s ease;
  }
  .nav-links a:hover{background:var(--paper);color:var(--teal-deep)}

  /* ---------- hero ---------- */
  .hero{position:relative;text-align:center;padding:clamp(40px,8vw,84px) 0 clamp(56px,9vw,96px);overflow:hidden}
  .floaties{position:absolute;inset:0;pointer-events:none;z-index:0}
  .floaties span{position:absolute;display:block;border-radius:42% 58% 56% 44% / 50% 46% 54% 50%}
  .b1{width:160px;height:160px;background:rgba(62,154,140,.13);top:6%;left:4%;animation:float 9s ease-in-out infinite}
  .b2{width:120px;height:120px;background:var(--purple-soft);top:14%;right:6%;border-radius:46% 54% 50% 50% / 52% 50% 50% 48%;animation:float 11s ease-in-out infinite reverse}
  .b3{width:70px;height:70px;background:rgba(255,201,77,.4);bottom:16%;left:12%;border-radius:50%;animation:float 8s ease-in-out infinite}
  .b4{width:46px;height:46px;background:rgba(31,179,136,.35);bottom:24%;right:14%;border-radius:50%;animation:float 7s ease-in-out infinite reverse}
  .b5{width:26px;height:26px;background:rgba(106,61,232,.5);top:42%;left:22%;border-radius:50%;animation:float 10s ease-in-out infinite}
  @keyframes float{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-16px) rotate(8deg)}}

  .hero-inner{position:relative;z-index:1}
  .hero-logo{display:inline-block;margin:0 auto 22px;transition:transform .4s cubic-bezier(.2,1.3,.4,1)}
  .hero-logo:hover{transform:translateY(-4px) rotate(-2deg)}
  .hero-logo svg{display:block;height:clamp(108px,18vw,168px);width:auto}
  .headline{
    font-family:var(--round);font-weight:800;
    font-size:clamp(30px,6.4vw,58px);line-height:1.32;letter-spacing:.01em;
    margin:0 0 18px;color:var(--ink);
  }
  .hl{
    color:var(--teal-deep);
    background:linear-gradient(to top, rgba(31,179,136,.26) 36%, transparent 36%);
    padding:0 .08em;border-radius:.12em;
  }
  .tagline{font-family:var(--pop);font-weight:500;color:var(--ink-mute);font-size:clamp(14px,1.8vw,17px);letter-spacing:.01em;margin:0}

  /* ---------- sections ---------- */
  .sec{padding:clamp(56px,9vw,104px) 0}
  .sec--apps{background:var(--paper);border-radius:40px;margin:0 8px}
  .sec-head{text-align:center;margin:0 0 clamp(34px,5vw,52px)}
  .kicker{font-family:var(--pop);font-weight:700;font-size:13px;letter-spacing:.18em;text-transform:uppercase;color:var(--teal);margin:0 0 10px}
  .sec-title{font-family:var(--round);font-weight:800;font-size:clamp(26px,4.6vw,40px);line-height:1.2;margin:0;color:var(--ink)}
  .sec-note{color:var(--ink-soft);font-size:15px;margin:12px 0 0}

  /* ---------- app cards ---------- */
  .apps{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;max-width:840px;margin:0 auto}
  .app{
    display:flex;flex-direction:column;gap:16px;text-decoration:none;color:inherit;
    background:var(--bg);border:1px solid var(--line);border-radius:26px;
    padding:clamp(22px,3vw,30px);box-shadow:var(--sh);
    transition:transform .3s cubic-bezier(.2,1.2,.4,1),box-shadow .3s ease,border-color .3s ease;
  }
  .app:hover{transform:translateY(-6px);box-shadow:var(--sh-h);border-color:transparent}
  .app:focus-visible{outline:3px solid var(--teal);outline-offset:3px}

  .icon{position:relative;width:clamp(76px,12vw,92px);aspect-ratio:1;flex:0 0 auto}
  .icon-art{width:100%;height:100%;object-fit:cover;display:block;
    -webkit-mask-image:var(--squircle);mask-image:var(--squircle);
    -webkit-mask-size:100% 100%;mask-size:100% 100%;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;
    filter:drop-shadow(0 8px 16px rgba(25,31,41,.18))}
  .icon-border{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}

  .app-name{font-family:var(--round);font-weight:800;font-size:clamp(20px,2.6vw,24px);line-height:1.2;margin:0}
  .app-tag{color:var(--teal-deep);font-weight:700;font-size:14px;margin:6px 0 0}
  .app-desc{color:var(--ink-soft);font-size:14.5px;line-height:1.75;margin:10px 0 0}
  .app-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:18px}
  .chip{font-family:var(--pop);font-weight:600;font-size:11.5px;letter-spacing:.04em;color:var(--ink-soft);background:var(--paper);border-radius:999px;padding:5px 12px}
  .app--oshi .chip{background:var(--purple-soft);color:var(--purple)}
  .store{
    display:inline-flex;align-items:center;gap:6px;white-space:nowrap;
    font-family:var(--round);font-weight:700;font-size:13.5px;color:#fff;
    background:var(--teal);border-radius:999px;padding:9px 16px;
    transition:background .25s ease,transform .25s ease,gap .25s ease;
  }
  .app:hover .store{background:var(--teal-deep);gap:9px}
  .store svg{width:14px;height:14px}

  /* ---------- contact ---------- */
  .contact-card{
    max-width:840px;margin:0 auto;text-align:center;
    background:linear-gradient(160deg,#EAF7F2,#F4F0FE);
    border-radius:32px;padding:clamp(34px,5vw,56px);
  }
  .contact-card .sec-title{margin-bottom:14px}
  .contact-card p{color:var(--ink-soft);font-size:16px;margin:0 auto 26px;max-width:26em}
  .btn{
    display:inline-flex;align-items:center;gap:9px;
    font-family:var(--round);font-weight:700;font-size:16px;color:#fff;
    background:var(--teal);border:none;border-radius:999px;padding:15px 30px;text-decoration:none;
    box-shadow:0 12px 26px -10px rgba(62,154,140,.7);
    transition:transform .25s cubic-bezier(.2,1.3,.4,1),background .25s ease,box-shadow .25s ease;
  }
  .btn:hover{transform:translateY(-3px) scale(1.02);background:var(--teal-deep);box-shadow:0 18px 34px -12px rgba(62,154,140,.8)}
  .btn:focus-visible{outline:3px solid var(--teal-deep);outline-offset:3px}
  .btn svg{width:17px;height:17px}

  /* ---------- footer ---------- */
  footer{padding:clamp(44px,7vw,72px) 0 48px;margin-top:clamp(40px,6vw,64px);border-top:1px solid var(--line)}
  .foot{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap}
  .foot .brand b{font-size:17px}
  .foot-links{display:flex;gap:8px}
  .foot-links a{font-weight:700;font-size:13px;color:var(--ink-soft);text-decoration:none;padding:7px 14px;border-radius:999px;transition:background .2s ease,color .2s ease}
  .foot-links a:hover{background:var(--paper);color:var(--teal-deep)}
  .copy{color:var(--ink-mute);font-family:var(--pop);font-size:12px;margin:20px 0 0}

  /* ---------- reveal ---------- */
  .reveal{opacity:0;transform:translateY(20px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.3,1)}
  .reveal.in{opacity:1;transform:none}

  @media (max-width:680px){
    .nav-links{gap:2px}
    .nav-links a{padding:8px 12px}
    .apps{grid-template-columns:1fr;max-width:420px}
    .sec--apps{margin:0;border-radius:32px}
  }
  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    *{animation:none!important;transition:none!important}
    .reveal{opacity:1;transform:none}
  }