:root{--bg: #f7f7f5;--card: #ffffff;--ink: #1d1d1f;--muted: #6b7280;font-family:-apple-system,PingFang HK,Microsoft YaHei,system-ui,sans-serif;color:var(--ink)}*{box-sizing:border-box}body{margin:0;background:var(--bg)}main{max-width:960px;margin:0 auto;padding:32px 20px 80px}.lang-toggle{display:flex;justify-content:flex-end;gap:0;margin-bottom:8px}.lang-toggle button{border:1px solid #d1d5db;background:#fff;color:var(--muted);font-size:.85rem;padding:5px 14px;cursor:pointer}.lang-toggle button:first-child{border-radius:8px 0 0 8px}.lang-toggle button:last-child{border-radius:0 8px 8px 0;border-left:none}.lang-toggle button.active{background:var(--ink);color:#fff;border-color:var(--ink)}.hero{text-align:center;padding:24px 0 8px}.hero h1{font-size:2.2rem;margin:0 0 12px}.lede{font-size:1.15rem;line-height:1.7;max-width:640px;margin:0 auto 8px}.muted{color:var(--muted);font-size:.9rem}.card{background:var(--card);border-radius:14px;box-shadow:0 1px 3px #00000014;padding:20px;margin:24px 0}.hint{text-align:center;color:var(--muted);font-size:.9rem;margin:8px 0 0}.footer{margin-top:40px;line-height:1.7}.status{text-align:center;padding:80px 20px;color:var(--muted);font-size:1.1rem}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;align-items:center;justify-content:center;padding:20px;z-index:100;animation:fade-in .15s ease-out}.modal-content{position:relative;background:var(--card);border-radius:14px;box-shadow:0 10px 40px #00000040;padding:24px 20px 16px;width:min(920px,94vw);max-height:90vh;overflow:auto}.modal-close{position:absolute;top:10px;right:12px;border:none;background:transparent;font-size:1.6rem;line-height:1;color:var(--muted);cursor:pointer;padding:4px 8px;border-radius:8px}.modal-close:hover{background:#f0f0ef;color:var(--ink)}@keyframes fade-in{0%{opacity:0}to{opacity:1}}