:root{--cream: #fdf6ee;--warm-white: #f7efe3;--stone: #ede0ce;--sand: #d4c0a1;--bark: #9e7d55;--ink: #3b2a1a;--accent: #c4773a;--mist: #b8a898}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--cream);color:var(--ink);font-family:Noto Sans JP,sans-serif;font-weight:300;overflow-x:hidden}nav{position:fixed;top:0;left:0;right:0;z-index:200;padding:1rem 2.5rem;display:flex;justify-content:space-between;align-items:center;background:#faf8f4eb;backdrop-filter:blur(14px);border-bottom:1px solid var(--stone);transition:box-shadow .3s}.nav-logo{font-family:Bebas Neue,sans-serif;font-size:1.35rem;letter-spacing:.15em;color:var(--ink);text-decoration:none;cursor:pointer}.logo-s{color:#3a7abf}.logo-s2{color:#c4773a}.logo-b{color:#3d6b35}.hamburger{display:flex;flex-direction:column;gap:5px;cursor:pointer;padding:6px;background:none;border:none;z-index:210}.hamburger span{display:block;width:26px;height:2px;background:var(--ink);transition:transform 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