.st-header{position:sticky;top:0;z-index:40;background:linear-gradient(to bottom,rgba(245,239,226,0.98),rgba(245,239,226,0.94));backdrop-filter:blur(14px);border-bottom:1px solid rgba(160,138,110,0.55)}.st-header__inner{display:flex;align-items:center;justify-content:space-between;padding-top:var(--space-3);padding-bottom:var(--space-3);gap:var(--space-4)}.st-header__brand{display:flex;align-items:center;min-width:0}.st-header__logo-link{display:flex;align-items:center;gap:var(--space-3);color:var(--color-charcoal)}.st-header__logo-link:focus-visible{outline:2px solid var(--color-outline);outline-offset:3px}.st-header__logo-mark{width:40px;height:40px;border-radius:12px;background:conic-gradient(from 210deg,#b55a3c,#e2cfa2,#3f553a,#242322,#b55a3c);position:relative;box-shadow:0 8px 18px rgba(41,27,16,0.45);flex-shrink:0}.st-header__logo-mark::before{content:"";position:absolute;inset:6px;border-radius:9px;background:radial-gradient(circle at 30% 10%,rgba(255,255,255,0.55) 0,transparent 38%),linear-gradient(145deg,#3f553a,#1c2919 55%,#8b502f);box-shadow:inset 0 0 0 1px rgba(244,229,200,0.28)}.st-header__logo-mark::after{content:"ST";position:absolute;left:9px;bottom:6px;font-family:var(--font-sans-condensed);font-size:0.7rem;letter-spacing:0.16em;text-transform:uppercase;color:rgba(248,240,227,0.94)}.st-header__title-group{display:flex;flex-direction:column;min-width:0}.st-header__site-name{font-family:var(--font-sans-condensed);font-size:1.1rem;letter-spacing:0.18em;text-transform:uppercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--color-charcoal)}.st-header__site-tagline{font-size:0.78rem;color:var(--color-text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.st-header__nav{display:flex;align-items:center}.st-header__nav-list{display:flex;list-style:none;gap:var(--space-4);margin:0;padding:0}.st-header__nav-link{position:relative;font-family:var(--font-sans-condensed);font-size:0.82rem;letter-spacing:0.16em;text-transform:uppercase;color:var(--gray-700);padding:6px 0}.st-header__nav-link::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:999px;background:linear-gradient(90deg,var(--color-terracotta),var(--color-olive));transform:scaleX(0);transform-origin:center;transition:transform var(--transition-base)}.st-header__nav-link:hover::after,.st-header__nav-link:focus-visible::after{transform:scaleX(1)}.st-header__nav-link:focus-visible{outline:none}.st-header__toggle{display:none;flex-direction:column;justify-content:center;align-items:center;width:44px;height:44px;border-radius:999px;border:1px solid rgba(140,110,80,0.6);background-color:rgba(248,240,227,0.9);padding:0;gap:4px}.st-header__toggle-bar{width:20px;height:2px;border-radius:999px;background-color:var(--gray-700);transition:transform var(--transition-base),opacity var(--transition-base),background-color var(--transition-base)}.st-header__toggle:focus-visible{outline:2px solid var(--color-outline);outline-offset:3px}.st-header__toggle[aria-expanded="true"] .st-header__toggle-bar:nth-child(1){transform:translateY(6px) rotate(45deg)}.st-header__toggle[aria-expanded="true"] .st-header__toggle-bar:nth-child(2){opacity:0}.st-header__toggle[aria-expanded="true"] .st-header__toggle-bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}@media (max-width:900px){.st-header__site-tagline{display:none}}@media (max-width:768px){.st-header__toggle{display:flex}.st-header__nav{position:fixed;inset:56px 0 auto 0;max-height:0;overflow:hidden;background:linear-gradient(to bottom,rgba(245,239,226,0.98),rgba(240,229,214,0.98));border-bottom:1px solid rgba(160,138,110,0.55);transition:max-height var(--transition-slow);pointer-events:none;opacity:0}.st-header__nav-list{flex-direction:column;align-items:flex-start;padding:var(--space-3) var(--space-4);gap:var(--space-2)}.st-header__nav-link{padding:8px 0}.st-header__nav--open{max-height:260px;pointer-events:auto;opacity:1}.st-header{position:sticky;top:0}.st-header__inner{padding-top:var(--space-2);padding-bottom:var(--space-2)}}@media (max-width:480px){.st-header__logo-mark{width:34px;height:34px}.st-header__site-name{font-size:1rem;letter-spacing:0.14em}}