:root{--bg: #f2f5f9;--primary: #FF4B33;--surface: #ffffff;--surface-alt: #eef2f6;--text: #1b1f24;--accent: #d43e2a;--accent-soft: rgba(255, 75, 51, .22);--border-subtle: rgba(27, 31, 36, .12)}*,*:before,*:after{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:radial-gradient(circle at top left,#b3c8cf 0%,#89a8b2 45%,#6e8891 100%);color:var(--text)}a{color:inherit;text-decoration:none}.app-shell{min-height:100vh;display:flex;flex-direction:column}.app-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;padding:.75rem 1.5rem;background:rgba(179,200,207,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--border-subtle)}.logo{font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:.9rem;color:var(--accent)}.nav-links{display:flex;gap:1rem;font-size:.9rem}.nav-links a{padding:.35rem .8rem;border-radius:999px;transition:background .15s ease,color .15s ease,transform .1s ease}.nav-links a:hover{background:var(--accent-soft);transform:translateY(-1px)}.nav-links a.active{background:var(--accent);color:#556770}.app-main{padding:1.5rem 3rem 3rem;width:100%;max-width:100%;box-sizing:border-box}