:root{--brand:#0f766e;--brand-hover:#0b5f59;--brand-soft:#eaf8f5;--ink:#222;--body:#3f3f3f;--muted:#6a6a6a;--line:#ddd;--line-soft:#ebebeb;--canvas:#fff;--surface:#f7f7f7;--danger:#b42318;--radius-md:14px;--radius-lg:20px;--radius-xl:32px;--radius-full:9999px;--shadow-sm:0 2px 10px rgba(0,0,0,.07);--shadow-md:0 12px 34px rgba(0,0,0,.12)}*{box-sizing:border-box}html,body{margin:0;background:var(--canvas);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans TC","Microsoft JhengHei",sans-serif}body.locked{overflow:hidden}[hidden]{display:none!important}button,a,input,select,textarea{font:inherit}.shell{width:min(1180px,calc(100% - 48px));margin:auto}.topbar{height:80px;border-bottom:1px solid var(--line-soft);background:rgba(255,255,255,.96);position:sticky;top:0;z-index:30;backdrop-filter:blur(12px)}.nav-shell{height:100%;display:flex;align-items:center;gap:34px}.brand{font-size:22px;font-weight:800;color:var(--brand);text-decoration:none}.desktop-nav{display:flex;gap:8px;margin:auto}.nav-link{border:0;background:transparent;padding:12px 16px;border-radius:999px;color:var(--muted);cursor:pointer}.nav-link.active,.nav-link:hover{background:var(--surface);color:var(--ink);font-weight:600}.account-actions{display:flex;gap:10px;align-items:center}.icon-btn,.profile-pill{border:1px solid var(--line);background:#fff;min-height:42px;cursor:pointer}.icon-btn{width:42px;border-radius:50%}.profile-pill{border-radius:999px;display:flex;gap:8px;align-items:center;padding:5px 12px 5px 5px}.avatar{display:grid;place-items:center;border-radius:50%;background:var(--brand);color:#fff;font-weight:700;width:30px;height:30px}.page{padding:54px 0 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