:root{
  --text:#0b1220;
  --muted:#475569;
  --border:rgba(15,23,42,.12);
  --brand:#0b6bcb;
  --brand2:#0ea5e9;
  --bgTint:rgba(255,255,255,.86);
  --card:rgba(255,255,255,.92);
  --shadow:0 10px 30px rgba(2,6,23,.12);
  --radius:16px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:"Noto Sans JP","Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic","Meiryo",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  background:#ffffff;
}

/* Background image (provided) + white tint overlay */
.site-bg{
  position:fixed;
  inset:0;
  z-index:-2;
  background:url("../images/bg.jpg") center/cover no-repeat fixed;
}
.site-bg::after{
  content:"";
  position:absolute;
  inset:0;
  background:var(--bgTint);
}

/* Layout */
.container{width:min(1120px, 100%); margin:0 auto; padding:0 20px;}
.header{
  position:sticky; top:0; z-index:10;
  backdrop-filter:saturate(140%) blur(8px);
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex; align-items:center; justify-content:space-between; gap:16px; padding:12px 0;}
.brand{display:flex; align-items:center; gap:12px; min-width:240px;}
.brand img{width:64px; height:64px; border-radius:12px;}
.brand-title{font-weight:900; letter-spacing:.2px;}
.brand-sub{font-size:12px; color:var(--muted); margin-top:2px;}
.nav{display:flex; align-items:center; gap:10px; flex-wrap:wrap; justify-content:flex-end;}
.nav a{
  text-decoration:none;
  color:var(--text);
  font-size:13px;
  padding:8px 10px;
  border-radius:10px;
}
.nav a:hover{background:rgba(2,6,23,.04)}
.nav .cta-mini{
  border:1px solid rgba(11,107,203,.25);
  background:rgba(11,107,203,.06);
}
.nav .cta-mini:hover{background:rgba(11,107,203,.10)}

.hero{padding:42px 0 22px 0;}
.hero-card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:26px;
}
.h-eyebrow{display:inline-flex; align-items:center; gap:10px; font-size:12px; color:var(--muted);}
.dot{width:8px;height:8px;border-radius:99px;background:var(--brand2); display:inline-block;}
h1{margin:10px 0 10px 0; font-size:30px; line-height:1.25;}
.lead{margin:0; color:var(--muted); line-height:1.9; font-size:15px;}
.hero-actions{display:flex; gap:12px; flex-wrap:wrap; margin-top:18px;}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  text-decoration:none;
  border-radius:12px;
  padding:12px 16px;
  font-weight:700;
  font-size:14px;
  border:1px solid var(--border);
  color:var(--text);
  background:#fff;
}
.btn-primary{
  border-color:rgba(11,107,203,.35);
  background:linear-gradient(180deg, rgba(11,107,203,.10), rgba(11,107,203,.06));
}
.btn-primary:hover{background:linear-gradient(180deg, rgba(11,107,203,.14), rgba(11,107,203,.08))}
.btn.is-disabled{opacity:.55; cursor:not-allowed; pointer-events:none;}
.note{margin-top:16px; font-size:12px; color:var(--muted); line-height:1.8;}
.note strong{color:var(--text);}

.section{padding:26px 0;}
.section-title{display:flex; align-items:flex-end; justify-content:space-between; gap:12px; flex-wrap:wrap; margin-bottom:14px;}
.section-title h2{margin:0; font-size:18px;}
.section-title p{margin:0; color:var(--muted); font-size:13px; line-height:1.8;}

.grid{display:grid; gap:16px;}
.grid-2{grid-template-columns:repeat(2, minmax(0, 1fr));}
.grid-3{grid-template-columns:repeat(3, minmax(0, 1fr));}
@media (max-width: 920px){
  .grid-2,.grid-3{grid-template-columns:1fr;}
  .brand{min-width:auto;}
  h1{font-size:26px;}
}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.card-pad{padding:18px;}
.card h3{margin:0 0 8px 0; font-size:16px;}
.card p{margin:0; color:var(--muted); line-height:1.85; font-size:13.5px;}
.badge{display:inline-flex; align-items:center; gap:8px; font-size:12px; color:var(--muted); margin-bottom:10px;}
.badge span{width:8px;height:8px;border-radius:99px;background:var(--brand2); display:inline-block;}

.media{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap:14px;
  align-items:stretch;
}
@media (max-width: 920px){ .media{grid-template-columns:1fr;} }
.media img{
  width:100%;
  height:100%;
  object-fit:cover;
  border-radius:14px;
  border:1px solid var(--border);
  background:#fff;
}
.media .text{padding:8px 2px;}
.klist{margin:10px 0 0 0; padding:0 0 0 18px; color:var(--muted); font-size:13px; line-height:1.85;}
.klist li{margin:4px 0;}

.steps{counter-reset:step;}
.step{
  display:flex; gap:12px; align-items:flex-start;
}
.step .n{
  width:30px; height:30px; border-radius:10px;
  border:1px solid var(--border);
  display:flex; align-items:center; justify-content:center;
  font-weight:800; background:#fff;
  flex:0 0 auto;
}
.step .t{font-weight:800; margin:2px 0 4px 0;}
.step .d{margin:0; color:var(--muted); font-size:13px; line-height:1.85;}

.pricing{
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap:16px;
}
@media (max-width: 920px){ .pricing{grid-template-columns:1fr;} }
.price{
  position:relative;
}
.price .tag{
  position:absolute; top:14px; right:14px;
  font-size:11px; color:var(--brand);
  border:1px solid rgba(11,107,203,.25);
  background:rgba(11,107,203,.06);
  padding:6px 10px; border-radius:999px;
}
.price .amt{font-size:26px; font-weight:900; margin:10px 0 2px 0;}
.price .per{color:var(--muted); font-size:12px; margin:0 0 10px 0;}
.check{list-style:none; padding:0; margin:10px 0 0 0;}
.check li{margin:7px 0; color:var(--muted); font-size:13px; line-height:1.7;}
.check li::before{content:"✓"; margin-right:8px; color:var(--brand2); font-weight:900;}

.faq details{
  background:rgba(255,255,255,.85);
  border:1px solid var(--border);
  border-radius:14px;
  padding:12px 14px;
  margin:10px 0;
}
.faq summary{cursor:pointer; font-weight:800;}
.faq p{margin:8px 0 0 0; color:var(--muted); line-height:1.85; font-size:13px;}

.footer{
  background:rgba(255,255,255,.94);
  border-top:1px solid var(--border);
  padding:18px 0;
}
.footer .cols{display:flex; gap:14px; flex-wrap:wrap; align-items:center; justify-content:space-between;}
.footer .legal-links{display:flex; gap:10px; flex-wrap:wrap;}
.footer a{color:var(--brand); text-decoration:none; font-size:13px;}
.footer a:hover{text-decoration:underline;}
.small{font-size:12px; color:var(--muted); line-height:1.8;}

/* Accessibility */
/* ===== Double Delete Line (双删除线：加粗 + 加深 + 上移) ===== */
.double-del {
  position: relative;
  display: inline-block;
}

.double-del::before,
.double-del::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;                     /* 加粗 */
  background: rgba(0,0,0,0.6);     /* 加深颜色 */
}

/* 上横线（由 42% → 38%） */
.double-del::before {
  top: 38%;
}

/* 下横线（由 58% → 48%，整体跟着上调） */
.double-del::after {
  top: 48%;
}