:root{
  --bg:#f6f8fb;
  --card:#ffffff;
  --text:#151922;
  --muted:#687385;
  --blue:#2f6df6;
  --green:#21c063;
  --soft:#eef4ff;
  --line:#e4e9f2;
  --yellow:#fff7d8;
  --shadow:0 18px 45px rgba(20,32,52,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Noto Sans KR","Apple SD Gothic Neo","Segoe UI",Arial,sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,#fbfcff 0%,#f4f7fb 55%,#fbfcff 100%);
}
a{text-decoration:none;color:inherit}
.page{max-width:480px;margin:0 auto;padding:14px 16px 118px}
.site-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 0 16px;
}
.brand{display:flex;align-items:center;gap:9px;font-weight:950}
.brand-logo{
  width:34px;height:34px;border-radius:12px;background:#121826;color:#fff;
  display:grid;place-items:center;font-weight:950;
}
.header-btn{
  padding:9px 13px;border-radius:999px;background:#111827;color:#fff;
  font-weight:900;font-size:13px;
}
.hero{
  padding:24px 0 18px;
}
.eyebrow{
  display:inline-flex;
  padding:8px 12px;border-radius:999px;
  background:#eef4ff;color:#2f5fc8;font-size:13px;font-weight:900;margin:0 0 16px;
}
h1,h2,h3,p{margin-top:0}
h1{
  font-size:39px;line-height:1.08;letter-spacing:-.075em;
  margin-bottom:15px;
}
h1 strong{color:#2f6df6;font-style:normal}
.lead{
  color:#5f6e82;line-height:1.68;font-size:16.5px;font-weight:600;margin-bottom:18px;
}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
.chips span{
  padding:9px 11px;border-radius:999px;background:#fff;border:1px solid var(--line);
  color:#38475a;font-size:12.5px;font-weight:850;
}
.hero-preview,.intro-card,.sample-sheet,.benefits article,.steps article,.accordion-section details,.final-cta{
  background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);
}
.hero-preview{padding:18px;background:linear-gradient(135deg,#ffffff,#edf5ff)}
.preview-top{display:flex;gap:7px;margin-bottom:15px}
.preview-top span{width:9px;height:9px;border-radius:50%;background:#c4d3e5}
.preview-title{font-size:21px;font-weight:950;letter-spacing:-.04em;margin-bottom:14px}
.preview-row{
  display:flex;align-items:center;gap:12px;padding:12px;border-radius:14px;background:#fff;
  border:1px solid #e5edf7;margin-top:9px;font-weight:850;color:#31435a;
}
.preview-row b{
  width:30px;height:30px;border-radius:10px;background:#eef4ff;color:#2f6df6;
  display:grid;place-items:center;font-size:13px;
}
.intro-card{padding:19px;margin-top:12px}
.intro-card h2,.section h2,.final-cta h2{
  font-size:26px;line-height:1.18;letter-spacing:-.06em;margin-bottom:15px;
}
.number-list{display:grid;gap:12px}
.number-list article{display:flex;gap:12px;align-items:flex-start}
.number-list b{
  width:34px;height:34px;border-radius:12px;background:#111827;color:#fff;
  display:grid;place-items:center;flex:0 0 34px;
}
.number-list h3{font-size:17px;margin-bottom:5px;letter-spacing:-.03em}
.number-list p,.small-text,.section-desc,.benefits p,.steps p,.details-body p,.notice-text,.final-cta p{
  color:#647386;line-height:1.62;font-size:14.5px;margin-bottom:0;
}
.small-text{margin-top:15px}
.section{margin-top:30px}
.section-kicker{
  display:inline-flex;margin:0 0 9px;padding:7px 10px;border-radius:999px;
  background:#eef4ff;color:#2f6df6;font-size:12px;font-weight:950;
}
.section-desc{margin-bottom:14px}
.sample-sheet{padding:17px;background:linear-gradient(180deg,#fff,#f7fbff)}
.sheet-header{
  display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;
  font-weight:950;
}
.sheet-header em{font-style:normal;font-size:12px;color:#2f6df6;background:#eef4ff;padding:6px 9px;border-radius:999px}
.sheet-block{padding:13px;border:1px solid #e3ebf6;border-radius:15px;background:#fff;margin-top:9px}
.sheet-block strong{display:block;margin-bottom:6px}
.sheet-block p{font-size:13.8px;color:#66778c;line-height:1.55;margin:0}
.notice-text{font-size:12.8px;margin-top:10px;color:#7b8798}
.benefits{display:grid;gap:12px}
.benefits article{padding:17px}
.benefits h3{font-size:18px;margin-bottom:7px}
.steps{display:grid;gap:12px}
.steps article{display:flex;gap:13px;padding:15px;align-items:flex-start}
.steps b{
  width:32px;height:32px;border-radius:999px;background:#2f6df6;color:#fff;display:grid;place-items:center;flex:0 0 32px;
}
.accordion-section{margin-top:30px;display:grid;gap:10px}
details{padding:0;overflow:hidden}
summary{
  cursor:pointer;list-style:none;padding:17px;font-weight:950;display:flex;justify-content:space-between;align-items:center;
}
summary::-webkit-details-marker{display:none}
.details-body{padding:0 17px 17px;border-top:1px solid var(--line)}
.details-body h3{font-size:15px;margin:15px 0 6px}
.final-cta{
  margin-top:26px;padding:21px 17px;text-align:center;background:linear-gradient(135deg,#fff,#edf7ff);
}
.cta{
  display:flex;align-items:center;justify-content:center;gap:10px;
  width:100%;min-height:58px;border-radius:17px;background:#21c063;color:#fff;
  font-size:17px;font-weight:950;box-shadow:0 16px 34px rgba(33,192,99,.22);
}
.band-icon{
  width:28px;height:28px;border-radius:8px;background:#49d961;
  display:grid;place-items:center;font-size:22px;font-weight:950;line-height:1;
}
.fixed-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:60;
  padding:13px 16px;background:linear-gradient(180deg,rgba(251,252,255,0),rgba(251,252,255,.93) 28%,#fbfcff 100%);
}
.fixed-bar .cta{max-width:448px;margin:0 auto}
@media(max-width:380px){
  h1{font-size:34px}
  .intro-card h2,.section h2,.final-cta h2{font-size:23px}
}


/* Jump rows */
.jump-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:70px;
  padding:0 22px;
  border-radius:28px;
  background:#fff;
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  color:#101827;
  font-weight:950;
  font-size:18px;
  letter-spacing:-.03em;
}
.jump-row + .jump-row{margin-top:14px}
.jump-row strong{font-size:22px}
.subpage{
  max-width:480px;
  margin:0 auto;
  padding:18px 16px 44px;
}
.subpage-card{
  background:#fff;
  border:1px solid var(--line);
  border-radius:24px;
  box-shadow:var(--shadow);
  padding:22px 18px;
}
.subpage-card h1{
  font-size:30px;
  line-height:1.18;
  letter-spacing:-.06em;
  margin-bottom:14px;
}
.subpage-card h2{
  font-size:20px;
  line-height:1.25;
  letter-spacing:-.04em;
  margin:22px 0 8px;
}
.subpage-card p,.subpage-card li{
  color:#647386;
  line-height:1.7;
  font-size:15px;
}
.back-btn{
  display:flex;
  align-items:center;
  justify-content:center;
  margin-top:20px;
  min-height:52px;
  border-radius:16px;
  background:#111827;
  color:#fff;
  font-weight:950;
}