:root{--bg: #f6f7fb;--text: #0f172a;--muted: #6b7280;--card: #ffffff;--border: #e5e7eb;--accent: #2563eb;--shadow: 0 6px 20px rgba(16,24,40,.08)}.dark{--bg: #0b1220;--text: #e5e7eb;--muted: #9aa4b2;--card: #0f172a;--border: #1f2937;--accent: #3b82f6;--shadow: 0 12px 30px rgba(0,0,0,.35)}*{box-sizing:border-box}html,body{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.app{max-width:1100px;margin:0 auto;padding:1rem}.header{display:grid;grid-template-columns:1fr auto;align-items:center;gap:1rem;margin:1rem 0 .5rem}.title-wrap h1{margin:0;font-size:1.6rem}.subtitle{margin:.25rem 0 0;font-size:.96rem;color:var(--muted)}.header-right{display:flex;align-items:center;gap:.5rem}.tab{padding:.45rem .8rem;border:1px solid var(--border);background:var(--card);border-radius:10px;cursor:pointer;font-size:.92rem}.tab.active{color:#fff;background:var(--accent);border-color:var(--accent)}.switch{position:relative;width:48px;height:28px;border-radius:999px;background:var(--border);border:1px solid var(--border);cursor:pointer}.switch:after{content:"";position:absolute;top:2px;left:2px;width:24px;height:24px;border-radius:50%;background:#fff;box-shadow:0 2px 6px #00000040;transition:transform .2s ease}.switch.on{background:var(--accent)}.switch.on:after{transform:translate(20px)}.search-bar{width:100%;margin:.5rem 0 1rem;padding:.85rem 1rem;border:1px solid var(--border);border-radius:12px;background:var(--card);color:var(--text);outline:none}.search-bar::placeholder{color:var(--muted)}.status{margin:.5rem 0;color:var(--muted)}.job-list{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.job-card{position:relative;background:var(--card);border:1px solid var(--border);padding:1rem;border-radius:14px;box-shadow:var(--shadow);transition:transform .15s ease,box-shadow .15s ease}.job-card:hover{transform:translateY(-2px)}.job-title{margin:0 0 .3rem;font-size:1.08rem}.meta{margin:0;color:var(--muted);font-size:.92rem}.meta small{font-size:.86rem}.star{position:absolute;top:10px;right:10px;font-size:1.1rem;cursor:pointer;-webkit-user-select:none;user-select:none}.star.saved{color:#f59e0b}.btn{display:inline-block;margin-top:.75rem;padding:.65rem .95rem;border-radius:10px;border:1px solid transparent;background:var(--accent);color:#fff;text-decoration:none;cursor:pointer}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;padding:1rem}.modal{background:var(--card);color:var(--text);border:1px solid var(--border);border-radius:14px;padding:1rem;max-width:840px;width:min(96vw,840px);max-height:88vh;overflow:auto}.modal h2{margin:0 0 .25rem}.modal .meta{margin:0 0 .75rem}.modal .desc{line-height:1.5}.modal .desc a{color:var(--accent)}.footer{text-align:center;color:var(--muted);padding:1.25rem 0 2.5rem}.back-to-top{position:fixed;right:16px;bottom:20px;width:44px;height:44px;border-radius:999px;background:var(--accent);color:#fff;border:none;display:none;align-items:center;justify-content:center;cursor:pointer;box-shadow:var(--shadow)}.back-to-top.show{display:flex}@media (max-width: 640px){.header{grid-template-columns:1fr}.header-right{justify-content:flex-end}}