:root{
  --bg:#f5f8fa;
  --paper:#ffffff;
  --text:#10202b;
  --muted:#5c6b75;
  --line:#dce6eb;
  --blue:#0a84ff;
  --blue-dark:#0066cc;
  --soft-blue:#eef7ff;
  --soft-green:#f1fbf4;
  --shadow:0 10px 30px rgba(18,40,60,.08);
  --radius:18px;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
}
a{color:var(--blue-dark)}
header{
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--line);
  position:sticky;
  top:0;
  z-index:10;
  backdrop-filter:blur(10px);
}
.nav{
  max-width:1080px;
  margin:0 auto;
  padding:14px 22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:800;
  letter-spacing:.02em;
}
.brand img{width:34px;height:34px;border-radius:10px}
.links{display:flex;gap:14px;flex-wrap:wrap;font-size:.94rem}
.links a{text-decoration:none;color:#233844}
.links a:hover{text-decoration:underline}
main{
  max-width:1080px;
  margin:0 auto;
  padding:34px 22px 64px;
}
.hero{
  display:grid;
  grid-template-columns:minmax(0,1.55fr) minmax(280px,.85fr);
  gap:26px;
  align-items:stretch;
  margin:24px 0 34px;
}
.hero-panel,.hero-side,.card,.download-card,.notice{
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.hero-panel{padding:34px}
.hero-side{
  padding:28px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  text-align:center;
}
.hero-side img{
  width:124px;
  height:124px;
  border-radius:30px;
  margin:0 auto 16px;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:7px;
  border:1px solid #b8dcff;
  background:var(--soft-blue);
  color:#075dad;
  border-radius:999px;
  padding:5px 11px;
  font-size:.86rem;
  font-weight:700;
}
h1{
  margin:16px 0 10px;
  line-height:1.18;
  font-size:clamp(2rem,4.5vw,3.7rem);
  letter-spacing:-.04em;
}
h2{margin:0 0 14px;font-size:1.55rem;line-height:1.35}
h3{margin:0 0 8px;font-size:1.12rem}
p{margin:0 0 14px}
.hero p{font-size:1.06rem;color:var(--muted)}
.buttons{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 17px;
  min-height:44px;
  border-radius:12px;
  background:var(--blue);
  color:#fff;
  text-decoration:none;
  font-weight:800;
  border:1px solid transparent;
}
.btn:hover{background:#006bd6;text-decoration:none}
.btn.secondary{
  background:#fff;
  color:#17465f;
  border-color:#cbdde8;
}
.btn.secondary:hover{background:#f7fbff}
.section{margin:34px 0}
.grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;
}
.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.card{padding:22px}
.card p{color:var(--muted)}
.notice{
  padding:20px 22px;
  background:#fffaf0;
  border-color:#f0d69c;
  color:#503b09;
}
.download-section{
  display:grid;
  gap:16px;
  margin:26px 0 34px;
}
.download-card{
  padding:22px;
}
.download-card.safari-main{
  background:linear-gradient(180deg,#f7fbff 0%,#fff 100%);
  border-color:#beddf8;
}
.download-card.chrome-sub{
  background:#fff;
  border-color:#e0e8ed;
  box-shadow:0 6px 18px rgba(18,40,60,.055);
  padding:18px 20px;
}
.download-head{
  display:flex;
  align-items:center;
  gap:9px;
  margin:0 0 7px;
}
.browser-logo{
  width:20px;
  height:20px;
  flex:0 0 20px;
  display:inline-block;
}
.safari-main .browser-logo{
  width:24px;
  height:24px;
  flex-basis:24px;
}
.download-card.safari-main h2{
  margin:0;
}
.download-card.chrome-sub h3{
  margin:0;
  font-size:1.05rem;
}
.download-card.chrome-sub p{
  font-size:.96rem;
  margin-bottom:9px;
}
.sub-note{
  display:inline-block;
  color:#64717a;
  font-size:.92rem;
}
.text-link{
  font-weight:700;
}
ol,ul{padding-left:1.4em}
table{
  width:100%;
  border-collapse:collapse;
  background:#fff;
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line);
}
th,td{
  padding:12px 13px;
  border-bottom:1px solid var(--line);
  text-align:left;
  vertical-align:top;
}
th{background:#eef7ff}
footer{
  background:#10202b;
  color:#dfeaf0;
}
footer .inner{
  max-width:1080px;
  margin:0 auto;
  padding:26px 22px;
  font-size:.92rem;
}
footer a{color:#bfe0ff}
.small{font-size:.92rem;color:var(--muted)}
hr{border:0;border-top:1px solid var(--line);margin:28px 0}
@media (max-width:820px){
  .hero{grid-template-columns:1fr}
  .grid,.grid.two{grid-template-columns:1fr}
  .nav{align-items:flex-start;flex-direction:column}
  .hero-panel{padding:26px}
}