:root{
  --bg:#fbf8f3;--card:#fff;--text:#24262d;--sub:#646b78;--line:#ece6dc;
  --accent:#3b6ff5;--radius:18px;--shadow:0 2px 10px rgba(60,50,30,.06);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:"Hiragino Maru Gothic ProN","Hiragino Sans","Noto Sans JP","Yu Gothic",Meiryo,sans-serif;
  line-height:1.85;font-size:16px}
a{color:var(--accent)}
.wrap{max-width:780px;margin:0 auto;padding:0 18px}

/* header / footer */
header.site{background:rgba(255,255,255,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:58px}
.logo{font-weight:800;font-size:18px;color:var(--text);text-decoration:none}
.logo span{color:var(--accent)}
nav.gnav a{color:var(--text);text-decoration:none;font-size:14px;font-weight:700;margin-left:6px;padding:6px 10px;border-radius:99px}
nav.gnav a:hover{background:#f1ede6}
footer.site{background:#fff;border-top:1px solid var(--line);padding:28px 0 18px;font-size:13px;color:var(--sub)}
.fcols{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:18px}
.fcols b{display:block;color:var(--text);margin-bottom:4px}
.fcols a{display:block;color:var(--sub);text-decoration:none;padding:2px 0}
.fcols a:hover{color:var(--accent)}
.copy{margin:18px 0 0;text-align:center}

/* typography */
main{padding:6px 0 56px}
h1{font-size:26px;line-height:1.45;margin:14px 0 10px}
h2{font-size:20px;line-height:1.5;margin:44px 0 14px;display:flex;align-items:center;gap:10px}
h2::before{content:"";width:8px;height:22px;border-radius:4px;background:var(--accent);flex:none}
.cta h2::before,.apphero h2::before{display:none}
h3{font-size:17px;margin:24px 0 8px}
p{margin:0 0 14px}
.lead{color:var(--sub)}
.small{font-size:13px;color:var(--sub)}
.center{text-align:center}
.meta{font-size:13px;color:var(--sub)}
.crumb{font-size:12px;color:var(--sub);margin:16px 0 0}
.crumb a{color:var(--sub)}
.more{text-align:right;margin-top:10px;font-weight:700}
.more a{text-decoration:none}

/* hero */
.hero{margin:22px 0 8px;padding:30px 24px;border-radius:24px;
  background:linear-gradient(135deg,#fff3e2 0%,#eaf1ff 55%,#e7f7f1 100%)}
.hero h1{font-size:27px;margin:4px 0 12px}
.hello{font-weight:700;color:var(--sub);margin:0}

/* buttons */
.btn{display:inline-block;margin:4px 2px;padding:12px 22px;border-radius:99px;font-weight:800;text-decoration:none;
  color:#fff;background:var(--c,var(--accent));box-shadow:0 3px 0 rgba(0,0,0,.12);transition:transform .1s}
.btn:active{transform:translateY(2px);box-shadow:none}
.btn.ghost{background:#fff;color:var(--text);border:1.5px solid var(--line);box-shadow:none}

/* app cards */
.appgrid{display:grid;gap:14px}
@media(min-width:620px){.appgrid{grid-template-columns:1fr 1fr}}
.appcard{display:flex;gap:14px;align-items:flex-start;background:var(--card);border:1.5px solid var(--line);border-radius:var(--radius);
  padding:16px;text-decoration:none;color:var(--text);box-shadow:var(--shadow);transition:transform .15s,border-color .15s}
.appcard:hover{transform:translateY(-2px);border-color:var(--c,var(--accent))}
.appcard.soon{border-style:dashed;background:transparent;box-shadow:none}
.appicon{flex:none;width:52px;height:52px;border-radius:16px;display:grid;place-items:center;font-size:28px;
  background:color-mix(in srgb,var(--c,#9ca3af) 14%,#fff)}
.appicon.big{width:68px;height:68px;font-size:38px;border-radius:20px;margin-bottom:8px}
.appbody{display:flex;flex-direction:column;gap:2px;min-width:0}
.appbody b{font-size:17px}
.appbody span:last-child{font-size:13px;color:var(--sub);line-height:1.6}
.pill{align-self:flex-start;display:inline-block;font-size:11px;font-weight:800;padding:1px 10px;border-radius:99px;
  color:var(--c);background:color-mix(in srgb,var(--c) 12%,#fff)}

/* article cards */
.artgrid{display:grid;gap:12px}
@media(min-width:620px){.artgrid{grid-template-columns:1fr 1fr}}
.artcard{display:flex;flex-direction:column;gap:4px;background:var(--card);border:1.5px solid var(--line);border-radius:var(--radius);
  padding:16px 18px;text-decoration:none;color:var(--text);box-shadow:var(--shadow)}
.artcard:hover{border-color:var(--accent)}
.artcard b{line-height:1.55}
.artcard span:last-child{font-size:13px;color:var(--sub);line-height:1.6}
.cat{align-self:flex-start;font-size:11px;font-weight:800;color:var(--accent);background:#eaf0ff;border-radius:99px;padding:1px 10px;display:inline-block;margin:0}
p.cat{margin-top:14px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{background:#fff;border:1.5px solid var(--line);border-radius:99px;padding:4px 14px;font-size:14px;font-weight:700;text-decoration:none;color:var(--text)}

/* app page */
.apphero{margin:18px 0 6px;padding:26px 22px;border-radius:24px;text-align:center;
  background:color-mix(in srgb,var(--c) 9%,#fff);border:1.5px solid color-mix(in srgb,var(--c) 20%,#fff)}
.apphero .appicon{margin:0 auto 8px}
.apphero h1{margin:8px 0 6px}
.apphero .btn{--c:inherit;background:var(--c)}
.apphero .btn.ghost{background:#fff}
.features{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.feature{background:#fff;border:1.5px solid var(--line);border-radius:16px;padding:14px 16px}
.feature b{display:block;margin-bottom:2px}
.feature p{margin:0;font-size:14px;color:var(--sub);line-height:1.65}
ul.checks{list-style:none;padding:0}
ul.checks li{position:relative;padding-left:30px;margin:8px 0}
ul.checks li::before{content:"✓";position:absolute;left:0;top:2px;width:21px;height:21px;border-radius:50%;
  background:#e3f4ea;color:#15803d;font-size:12px;font-weight:900;display:grid;place-items:center}
ol.steps{list-style:none;padding:0;counter-reset:s}
ol.steps li{counter-increment:s;position:relative;padding:12px 14px 12px 54px;margin:10px 0;background:#fff;border:1.5px solid var(--line);border-radius:16px}
ol.steps li::before{content:counter(s);position:absolute;left:14px;top:12px;width:28px;height:28px;border-radius:50%;
  background:var(--accent);color:#fff;font-weight:800;display:grid;place-items:center;font-size:14px}

/* boxes / tables */
.box{background:#fff;border:1.5px solid var(--line);border-radius:var(--radius);padding:18px 20px;margin:18px 0}
.box.point{border-color:#c9d7ff;background:#f5f8ff}
.box.warn{border-color:#f5d9a8;background:#fffaf0}
.box h3:first-child,.box p:first-child{margin-top:0}
.box p:last-child,.box ul:last-child{margin-bottom:0}
.tbl{overflow-x:auto;border-radius:14px}
table{width:100%;border-collapse:collapse;background:#fff;font-size:14px;margin:12px 0 18px}
th,td{border:1px solid var(--line);padding:9px 10px;vertical-align:top;text-align:left}
th{background:#f6f2ea;white-space:nowrap}
td:first-child{white-space:nowrap;font-weight:700}
ul,ol{padding-left:1.4em;margin:0 0 14px}
li{margin:4px 0}

/* cta / faq / profile */
.cta{text-align:center;margin:40px 0;padding:28px 22px;border-radius:24px;background:color-mix(in srgb,var(--c) 10%,#fff);
  border:1.5px solid color-mix(in srgb,var(--c) 22%,#fff)}
.cta .appicon{margin:0 auto}
.cta h2{display:block;margin:4px 0 8px}
.cta p{color:var(--sub);font-size:14px}
.faq dt{font-weight:800;margin-top:12px;padding:12px 16px 0;background:#fff;border:1.5px solid var(--line);border-bottom:none;border-radius:14px 14px 0 0}
.faq dt::before{content:"Q. ";color:var(--accent)}
.faq dd{margin:0 0 4px;padding:4px 16px 12px;background:#fff;border:1.5px solid var(--line);border-top:none;border-radius:0 0 14px 14px;color:var(--sub);font-size:15px}
.profile{display:flex;gap:14px;align-items:center;background:#fff;border:1.5px solid var(--line);border-radius:var(--radius);padding:16px;margin:16px 0}
.avatar{flex:none;width:56px;height:56px;border-radius:50%;display:grid;place-items:center;font-weight:900;font-size:24px;color:#fff;
  background:linear-gradient(135deg,#f59e0b,#3b6ff5)}
.idea{font-size:14px;color:var(--sub);background:#fff8e6;border-radius:14px;padding:12px 16px;margin-top:14px}
.footidea{text-align:center;margin:18px 0 0}
.footidea a{color:var(--sub);text-decoration:none}