.site-head {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  border-bottom: 1px solid var(--line-2);
}
.head-in { height: var(--head-h); display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }

.brand { display: flex; align-items: center; gap: 0.8rem; min-width: 0; }
.brand-mark { width: 52px; height: 52px; flex: none; object-fit: contain; border-radius: 50%; background: var(--navy); }
.brand-name { display: flex; flex-direction: column; line-height: 1.15; min-width: 0; }
.brand-name b {
  font-family: var(--f-head); font-weight: 700; font-size: 1.12rem; color: var(--navy); letter-spacing: -0.01em;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.brand-name small { font-size: 0.8rem; color: var(--muted); font-weight: 500; white-space: nowrap; }

.nav { display: flex; align-items: center; gap: 2rem; }
.nav a.nl { font-size: 0.98rem; font-weight: 500; color: var(--text); position: relative; padding: 0.3rem 0; }
.nav a.nl::after {
  content: ''; position: absolute; left: 0; right: 100%; bottom: -3px; height: 2px; border-radius: 2px;
  background: var(--orange); transition: right 0.25s ease;
}
.nav a.nl:hover { color: var(--navy); }
.nav a.nl:hover::after { right: 0; }

.head-cta { display: flex; align-items: center; gap: 0.7rem; }
.menu-btn {
  display: none; width: 46px; height: 46px; border-radius: var(--radius-btn); border: 1.5px solid var(--line);
  background: #fff; color: var(--navy); align-items: center; justify-content: center; cursor: pointer;
}
.menu-btn .i { width: 1.4rem; height: 1.4rem; }

@media (max-width: 1280px) { .nav { gap: 1.4rem; } }
@media (max-width: 1100px) {
  .nav {
    display: none; position: absolute; left: 0; right: 0; top: var(--head-h);
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line); padding: 0.5rem var(--pad-x) 1.2rem; box-shadow: var(--shadow-md);
  }
  .nav.open { display: flex; }
  .nav a.nl { padding: 0.95rem 0; border-bottom: 1px solid var(--line-2); }
  .nav a.nl::after { display: none; }
  .menu-btn { display: inline-flex; }
}
@media (max-width: 760px) { .head-cta .btn { display: none; } }
@media (max-width: 420px) {
  .brand-name small { display: none; }
  .brand-name b { font-size: 0.98rem; }
}

/* ---------- Scroll states ---------- */
.site-head { transition: box-shadow 0.3s ease, background 0.3s ease; }
.site-head.scrolled { background: rgba(255, 255, 255, 0.97); box-shadow: 0 10px 30px -18px rgba(32, 33, 88, 0.35); }
.progress {
  position: absolute; left: 0; bottom: -1px; height: 3px; width: 100%; pointer-events: none;
  background: linear-gradient(90deg, var(--orange), #f8c77f 55%, var(--navy));
  transform: scaleX(var(--p, 0)); transform-origin: left;
}
.nav a.nl.on { color: var(--navy); font-weight: 600; }
.nav a.nl.on::after { right: 0; }
@media (max-width: 1100px) {
  .nav a.nl.on { color: var(--orange-text); }
}