*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#ffffff;
  --bg2:#f5f5f5;
  --bg3:#0f0f0f;
  --text:#111111;
  --sub:#888888;
  --line:#e8e8e8;
  --accent:#00b9b5;
  --card-bg:#fafafa;
  --card-border:#e8e8e8;
}

html{scroll-behavior:smooth}

body{
  font-family:'Pretendard Variable',Pretendard,-apple-system,sans-serif;
  background:var(--bg2);
  color:var(--text);
  font-size:15px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}

/* ── NAV ── */
nav{
  position:fixed;top:0;left:0;right:0;z-index:99;
  height:56px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 40px;
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(20px);
  border-bottom:1px solid var(--line);
}
.logo{
  font-size:1rem;font-weight:600;letter-spacing:-.01em;color:var(--text);
  display:flex;align-items:center;gap:10px;text-decoration:none;
}
.logo img{height:2rem;width:auto}
.nav-back{
  font-size:12px;font-weight:400;color:var(--sub);text-decoration:none;
  display:flex;          /* ← 이 줄 추가 */
  align-items:center;    /* ← 이 줄 추가 */
  gap:6px;
  transition:color .15s;
}
.nav-back:hover{color:var(--text)}
.nav-back svg{
  width:16px;
  height:16px;
  transition:transform .15s;
  flex-shrink:0;
}
.nav-back:hover svg{transform:translateX(-3px)}

/* ── LAYOUT ── */
.hero{
  min-height:100vh;
  display:grid;place-items:center;
  padding:100px 40px 60px;
}
.card-wrap{
  width:100%;max-width:860px;
  display:flex;flex-direction:column;
}

/* ── IDENTITY BLOCK ── */
.identity{
  background:var(--bg3);
  padding:48px 52px 44px;
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:32px;
  position:relative;
  overflow:hidden;
  opacity:0;
  animation:fadeUp .6s ease forwards;
}
.identity::before{
  content:'';
  position:absolute;inset:0;
  background:radial-gradient(ellipse 60% 80% at 90% 0%, rgba(0,185,181,.1) 0%, transparent 60%);
  pointer-events:none;
}
.id-kicker{
  font-size:11px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;
  color:#444;margin-bottom:18px;
}
.id-name{
  font-size:clamp(28px,4vw,46px);font-weight:700;
  letter-spacing:-.03em;line-height:1.1;
  color:#fff;margin-bottom:8px;
}
.id-name span{color:var(--accent)}
.id-sub{font-size:13px;color:#444;letter-spacing:.01em}
.id-logo img{height:12rem;width:auto;opacity:.9}

/* ── ACCENT LINE ── */
.accent-line{
  height:2px;
  background:linear-gradient(90deg, var(--accent) 0%, transparent 55%);
}

/* ── CONTACT GRID ── */
.contact-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-top:none;
}

.contact-item{
  background:var(--bg);
  padding:28px 32px;
  display:flex;align-items:center;gap:20px;
  text-decoration:none;color:inherit;
  transition:background .15s;
  opacity:0;
}

.contact-item.clickable{cursor:pointer}
.contact-item.clickable:hover{background:#f0fffe}
.contact-item.clickable:hover .ci-value{color:var(--accent)}
.contact-item.clickable:hover .ci-icon{border-color:var(--accent);background:rgba(0,185,181,.06)}

.ci-icon{
  width:40px;height:40px;flex-shrink:0;
  border:1px solid var(--line);border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg2);
  transition:border-color .15s, background .15s;
}
.ci-icon svg{width:18px;height:18px}

.ci-body{flex:1;min-width:0}
.ci-label{font-size:10px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--sub);margin-bottom:4px}
.ci-value{font-size:14px;color:var(--text);letter-spacing:-.01em;word-break:break-all;transition:color .15s}
.ci-value.mono{font-family:'SF Mono','Fira Code',monospace;font-size:13px;letter-spacing:.02em}

/* ── QR ROW ── */
.qr-row{
  grid-column:1/-1;
  display:grid;grid-template-columns:1fr 1fr;
  gap:1px;
  background:var(--line);
}
.qr-item{
  background:var(--bg);
  padding:36px 32px;
  display:flex;align-items:flex-start;gap:28px;
  opacity:0;
}
.qr-meta{display:flex;align-items:center;gap:16px;margin-bottom:20px}
.qr-icon{
  width:40px;height:40px;flex-shrink:0;
  border:1px solid var(--line);border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg2);
}
.qr-icon svg{width:18px;height:18px}
.qr-label{font-size:10px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--sub);margin-bottom:3px}
.qr-id{font-size:14px;color:var(--text);letter-spacing:-.01em}
.qr-hint{font-size:11px;color:#bbb;margin-top:10px;line-height:1.6}

.qr-code-box {
  flex-shrink: 0;
  width: 120px;      /* 100px → 120px */
  height: 120px;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;  /* ← 추가 */
  padding: 8px;      /* ← 추가, QR 주변 여백 */
  background: #fff;
}

.qr-code-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;     /* ← 추가, 하단 여백 제거 */
}

.qr-code-box svg {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
}

.qr-placeholder-text{font-size:9px;letter-spacing:.08em;text-transform:uppercase;color:#ccc;text-align:center;line-height:1.4}
.qr-code-box img{width:100%;height:100%;object-fit:contain;border-radius:3px}

/* ── BOTTOM STRIP ── */
.bottom-strip{
  background:var(--bg);
  border:1px solid var(--line);border-top:none;
  padding:20px 32px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  flex-wrap:wrap;
  opacity:0;animation:fadeUp .6s .5s ease forwards;
}
.bs-left{display:flex;align-items:center;gap:10px}
.bs-dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.bs-text{font-size:11px;color:var(--sub);letter-spacing:.04em}
.bs-right{font-size:11px;color:#ccc;letter-spacing:.04em}

/* ── BACK LINK ── */
.back-link-wrap{
  text-align:center;margin-top:28px;padding-bottom:40px;
  opacity:0;animation:fadeUp .6s .55s ease forwards;
}
.back-link{
  font-size:12px;color:#bbb;text-decoration:none;
  letter-spacing:.04em;
  transition:color .15s;
}
.back-link:hover{color:var(--sub)}

/* ── ANIMATIONS ── */
@keyframes fadeUp{
  from{opacity:0;transform:translateY(14px)}
  to{opacity:1;transform:translateY(0)}
}
.contact-item:nth-child(1){animation:fadeUp .5s .15s ease forwards}
.contact-item:nth-child(2){animation:fadeUp .5s .20s ease forwards}
.contact-item:nth-child(3){animation:fadeUp .5s .25s ease forwards}
.contact-item:nth-child(4){animation:fadeUp .5s .30s ease forwards}
.qr-row           {animation:fadeUp .5s .35s ease forwards;opacity:0}
.qr-item:nth-child(1){animation:none;opacity:1}
.qr-item:nth-child(2){animation:none;opacity:1}

/* ── MOBILE ── */
@media (max-width: 766px) {
  .qr-row { grid-template-columns: 1fr; }
  .qr-item { padding: 28px 24px; }
}

@media(max-width:640px){
  nav{padding:0 20px}
  .hero{padding:80px 20px 48px}
  .identity{padding:36px 24px 32px;flex-direction:column;align-items:flex-start}
  .id-logo img{height:40px}
  .contact-grid{grid-template-columns:1fr}
  .qr-row{grid-template-columns:1fr}
  .qr-item{padding:28px 24px;gap:20px}
  .bottom-strip{padding:18px 24px}
}