:root{--ink:#14213d;--blue:#315efb;--soft:#f3f6ff;--line:#e7ebf3;--muted:#68738a;--danger:#d44848;--green:#218b61}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif;color:var(--ink);background:#f7f8fc}a{color:inherit;text-decoration:none}.container{max-width:1100px;margin:auto;padding:0 24px}.topbar{background:#fff;border-bottom:1px solid var(--line)}.nav{height:68px;display:flex;align-items:center;justify-content:space-between}.nav a{margin-left:20px;color:var(--muted);font-size:14px}.brand{font-weight:800;letter-spacing:.02em}.auth-page{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#edf2ff,#fff)}.auth-card{width:min(420px,calc(100% - 32px));background:#fff;padding:38px;border-radius:22px;box-shadow:0 18px 55px #21325b18}.auth-card h1{margin:32px 0 10px;font-size:28px}.auth-card .brand{color:var(--blue)}label{display:block;font-size:14px;font-weight:700;margin:18px 0}input,textarea{width:100%;border:1px solid #dfe4ef;border-radius:10px;padding:12px 13px;font:inherit;margin-top:8px;background:#fff}textarea{resize:vertical}.btn{display:inline-flex;justify-content:center;align-items:center;border:0;border-radius:10px;padding:12px 18px;font-weight:800;cursor:pointer}.btn.primary{background:var(--blue);color:#fff}.btn.full{width:100%;margin-top:10px}.back-link{display:block;margin-top:22px;color:var(--muted);font-size:14px;text-align:center}.alert{padding:12px 15px;border-radius:10px;margin:18px 0;font-size:14px}.alert.error{background:#fff0f0;color:#a12626}.alert.success{background:#ecfbf3;color:#176946}.admin-main{padding-top:44px;padding-bottom:60px}.page-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:26px}.page-head h1{font-size:34px;margin:5px 0}.eyebrow{color:var(--blue);font-size:12px;font-weight:900;letter-spacing:.15em;margin:0}.muted{color:var(--muted);font-size:14px}.panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;margin:18px 0;box-shadow:0 8px 25px #1d326b08}.panel h2{margin:0 0 20px;font-size:20px}.upload-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 18px}.wide{grid-column:1/-1}.check{font-weight:500}.check input{width:auto;margin:0 8px 0 0}.section-title{display:flex;align-items:center;gap:12px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:15px 10px;border-top:1px solid var(--line);vertical-align:top}th{color:var(--muted);font-weight:600}.small{font-size:12px;margin-top:6px;max-width:240px}.badge{background:#f0f2f6;padding:5px 9px;border-radius:99px;font-size:12px}.badge.success{background:#e8f8ef;color:var(--green)}.actions{display:flex;gap:12px}.link-button{background:none;border:0;padding:0;color:var(--blue);cursor:pointer;font:inherit}.link-button.danger{color:var(--danger)}.empty{padding:25px;text-align:center;color:var(--muted);background:#fafbfe;border-radius:12px}.download-page{min-height:100vh;background:radial-gradient(circle at 80% 0,#dfe8ff,transparent 35%),#f7f9ff;padding:0 24px}.hero{max-width:980px;margin:auto;padding-top:12vh}.hero>.brand{color:var(--blue)}.pill{display:inline-block;margin-top:70px;padding:7px 12px;background:#e6edff;color:var(--blue);border-radius:99px;font-size:13px;font-weight:800}.hero h1{font-size:clamp(42px,7vw,76px);line-height:1.1;margin:20px 0;color:var(--ink)}.hero h1 em{font-style:normal;color:var(--blue)}.lead{font-size:20px;color:var(--muted)}.download-card{display:flex;gap:32px;align-items:center;margin-top:48px;background:#fff;padding:25px;border-radius:22px;width:min(670px,100%);box-shadow:0 15px 50px #243b7514}.qr{width:220px;height:220px;flex:none}.qr img{display:block}.download-info{line-height:1.7;color:var(--muted)}.download-info p{margin:0 0 18px}.version{color:var(--ink)}.hint{font-size:12px}.install-note{margin-top:22px;color:var(--muted);font-size:13px}.hero-empty{max-width:400px;margin-top:40px}footer{max-width:980px;margin:80px auto 0;padding-bottom:25px;color:var(--muted);font-size:13px}@media(max-width:650px){.download-card{display:block}.qr{margin:0 auto 25px}.hero{padding-top:8vh}.pill{margin-top:40px}.upload-grid{display:block}.page-head{align-items:start;gap:15px;flex-direction:column}.actions{flex-direction:column}}