:root{
  --bg:#f5f7fb;
  --card:#ffffff;
  --text:#16181d;
  --muted:#686d77;
  --line:#e4e8ef;
  --blue:#0a84ff;
  --blue-dark:#006edc;
  --soft:#eef6ff;
  --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Helvetica Neue","Hiragino Sans",
              "Yu Gothic UI","Yu Gothic",Meiryo,Arial,sans-serif;
  line-height:1.75;
}
img{max-width:100%;display:block}
a{color:var(--blue)}
header{
  position:sticky;
  top:0;
  z-index:20;
  background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(16px);
  border-bottom:1px solid var(--line);
}
.nav{
  max-width:var(--max);
  margin:0 auto;
  padding:14px 22px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.brand{
  display:flex;
  align-items:center;
  gap:11px;
  min-width:0;
  font-weight:800;
  font-size:18px;
}
.brand img{
  width:42px;
  height:42px;
  border-radius:10px;
  object-fit:cover;
  box-shadow:0 4px 14px rgba(0,0,0,.10);
}
.brand span{white-space:nowrap}
.links{
  display:flex;
  align-items:center;
  gap:18px;
  flex-wrap:wrap;
  justify-content:flex-end;
}
.links a{
  color:#2b2f36;
  text-decoration:none;
  font-weight:650;
  font-size:14px;
}
.links a:hover{color:var(--blue)}
main{
  max-width:var(--max);
  margin:0 auto;
  padding:52px 22px 74px;
}
.hero{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:28px;
  align-items:center;
  margin-bottom:48px;
}
.badge{
  display:inline-block;
  padding:7px 11px;
  border-radius:999px;
  background:var(--soft);
  color:var(--blue-dark);
  font-size:13px;
  font-weight:750;
  margin-bottom:12px;
}
h1{
  margin:0 0 14px;
  font-size:clamp(34px,6vw,58px);
  line-height:1.12;
  letter-spacing:-.03em;
}
.hero p{
  font-size:18px;
  color:var(--muted);
  margin:0;
}
.phone-showcase{
  background:linear-gradient(180deg,#f7fbff,#eef5ff);
  border:1px solid var(--line);
  border-radius:30px;
  padding:20px;
  box-shadow:0 12px 36px rgba(0,0,0,.06);
}
.device-image{
  border-radius:30px;
  overflow:hidden;
  box-shadow:0 16px 38px rgba(0,0,0,.12);
  background:#fff;
}
.buttons{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-top:23px;
}
.btn{
  display:inline-block;
  padding:11px 17px;
  border-radius:12px;
  background:var(--blue);
  color:#fff!important;
  text-decoration:none;
  font-weight:750;
}
.btn:hover{background:var(--blue-dark)}
.btn.secondary{
  background:#fff;
  color:var(--blue)!important;
  border:1px solid var(--line);
}
section{
  margin:38px 0;
}
section > h2, main > h2{
  margin:0 0 14px;
  font-size:28px;
  letter-spacing:-.015em;
}
section > p.lead{
  margin:0 0 16px;
  color:var(--muted);
}
.grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
}
.grid-2{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:18px;
}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:20px;
  padding:22px;
  box-shadow:0 8px 26px rgba(0,0,0,.04);
}
.card h3{margin:0 0 8px;font-size:19px}
.card p{margin:0;color:var(--muted)}
.notice{
  background:var(--soft);
  border:1px solid #d9eaff;
  border-radius:18px;
  padding:18px 20px;
}
.content{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:24px;
  padding:30px;
  box-shadow:0 10px 32px rgba(0,0,0,.045);
}
.content h1{
  font-size:clamp(34px,5vw,48px);
  margin-bottom:6px;
}
.content h2{
  margin:31px 0 8px;
  font-size:23px;
}
.content h3{
  margin:24px 0 7px;
  font-size:19px;
}
.content p{margin:8px 0}
.content ul{padding-left:1.3em}
.meta{color:var(--muted);font-size:14px}
.lang{
  margin:26px 0 0;
  padding-top:20px;
  border-top:1px solid var(--line);
}
.lang a{font-weight:700;text-decoration:none}
.faq h3{margin-top:26px}
.shot{
  background:#fff;
  border:1px solid var(--line);
  border-radius:24px;
  padding:14px;
  box-shadow:0 10px 30px rgba(0,0,0,.05);
}
.shot img{
  width:100%;
  border-radius:18px;
}
.shot figcaption{
  margin-top:10px;
  color:var(--muted);
  font-size:14px;
}
.feature-row{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:24px;
  align-items:start;
  margin-top:18px;
}
.feature-row.reverse{
  grid-template-columns:1.1fr .9fr;
}
.feature-copy{
  background:#fff;
  border:1px solid var(--line);
  border-radius:22px;
  padding:24px;
  box-shadow:0 8px 24px rgba(0,0,0,.04);
}
.feature-copy h3{
  margin:0 0 8px;
  font-size:22px;
}
.feature-copy p{
  margin:0;
  color:var(--muted);
}
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
}
.step{
  background:#fff;
  border:1px solid var(--line);
  border-radius:22px;
  padding:16px;
  box-shadow:0 8px 24px rgba(0,0,0,.04);
}
.step strong{
  display:block;
  margin:10px 0 6px;
  font-size:18px;
}
.step span{color:var(--muted);font-size:14px}
.mini-hero{
  display:grid;
  grid-template-columns:1fr 330px;
  gap:24px;
  align-items:center;
}
footer{
  border-top:1px solid var(--line);
  background:#fff;
}
footer .inner{
  max-width:var(--max);
  margin:0 auto;
  padding:28px 22px 36px;
  color:var(--muted);
  font-size:13px;
  text-align:center;
}
footer a{
  display:inline-block;
  margin-top:7px;
  text-decoration:none;
  font-weight:650;
}
@media (max-width:900px){
  .hero,.feature-row,.feature-row.reverse,.mini-hero{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
}
@media (max-width:760px){
  .nav{align-items:flex-start;flex-direction:column;gap:10px}
  .links{gap:13px}
  .grid,.grid-2{grid-template-columns:1fr}
  main{padding-top:34px}
  .content{padding:22px}
}

.langswitch{
  display:inline-flex;
  gap:8px;
  align-items:center;
  margin-left:4px;
}
.langswitch a{
  padding:5px 9px;
  border-radius:999px;
  border:1px solid var(--line);
  background:#fff;
  color:#2b2f36;
  text-decoration:none;
  font-size:12px;
  font-weight:700;
}
.langswitch a.current{
  background:var(--blue);
  color:#fff;
  border-color:var(--blue);
}

.support-hero{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:30px;
  align-items:center;
  margin-bottom:42px;
}
.support-actions{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
  margin:28px 0 10px;
}
.support-action{
  display:block;
  background:#fff;
  border:1px solid var(--line);
  border-radius:20px;
  padding:22px;
  text-decoration:none;
  color:var(--text);
  box-shadow:0 8px 26px rgba(0,0,0,.04);
}
.support-action:hover{
  transform:translateY(-1px);
  box-shadow:0 12px 30px rgba(0,0,0,.07);
}
.support-action strong{
  display:block;
  font-size:18px;
  margin-bottom:5px;
}
.support-action span{
  color:var(--muted);
  font-size:14px;
}
@media (max-width:900px){
  .support-hero{grid-template-columns:1fr}
  .support-actions{grid-template-columns:1fr}
}