:root{--bg: #07111c;--card: rgba(14, 28, 44, .92);--line: rgba(93, 224, 230, .18);--text: #e8f4ff;--muted: #8aa4b8;--accent: #5de0e6;--accent-2: #4d8dff;--danger: #ff6b7a;--ok: #3dd68c}*{box-sizing:border-box}html,body,#app{margin:0;min-height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:radial-gradient(1200px 600px at 10% -10%,rgba(77,141,255,.22),transparent 50%),radial-gradient(900px 500px at 100% 0%,rgba(93,224,230,.16),transparent 45%),var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}.app-shell{min-height:100vh;display:flex;flex-direction:column}.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;border-bottom:1px solid var(--line);position:sticky;top:0;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);background:#07111cc7;z-index:10}.brand{font-weight:700;letter-spacing:.04em}.nav nav{display:flex;gap:14px;font-size:14px}.nav a.router-link-exact-active{color:var(--accent)}main{width:min(980px,calc(100% - 32px));margin:0 auto;padding:28px 0 48px;flex:1}footer{padding:20px;text-align:center;color:var(--muted);font-size:12px;border-top:1px solid var(--line)}.hero h1{margin:0 0 12px;font-size:clamp(28px,6vw,44px);line-height:1.2}.hero p,.lead{color:var(--muted);line-height:1.7}.invite-box,.card{margin-top:24px;padding:20px;border:1px solid var(--line);border-radius:16px;background:var(--card)}.invite-box .label{color:var(--muted);font-size:13px}.invite-code{margin:6px 0 12px;font-size:28px;letter-spacing:.12em;color:var(--accent);font-weight:700}.invite-link{display:inline-block;color:var(--accent);text-decoration:underline;word-break:break-all;line-height:1.6}.invite-link:hover{color:#9af0f4}.invite-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.reward-box{margin-top:20px;padding:16px 18px;border-radius:14px;border:1px solid var(--line);background:#5de0e614;line-height:1.8}.reward-box b{display:block;margin-bottom:6px;color:var(--accent)}.notice{margin-top:20px;padding:16px 18px;border-radius:14px;border:1px solid rgba(255,196,92,.35);background:#ffc45c14;color:#f3d9a2;line-height:1.7}.notice b{display:block;margin-bottom:6px;color:#ffd27a}.hero strong{color:var(--accent);font-weight:700}.captcha-row{display:flex;align-items:center;gap:10px}.captcha-row input{flex:1}.captcha-btn{flex:0 0 128px;height:44px;padding:0;border:1px solid var(--line);border-radius:12px;background:#eef6f8;cursor:pointer;overflow:hidden}.captcha-btn img{display:block;width:128px;height:44px}.hint{color:var(--muted);font-size:12px;line-height:1.5}.hint a,.notice a,.step a{color:var(--accent);text-decoration:underline}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:24px 0}.step{padding:16px;border-radius:14px;border:1px solid var(--line);background:#081420b3}.step b{display:block;margin-bottom:8px;color:var(--accent)}.actions{display:flex;flex-wrap:wrap;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border-radius:12px;border:0;cursor:pointer;font-size:15px;font-weight:600}.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#06202a}.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line)}.form{display:grid;gap:14px}label{display:grid;gap:8px;font-size:14px}input,textarea{width:100%;min-height:46px;padding:10px 12px;border-radius:12px;border:1px solid var(--line);background:#0a1622;color:var(--text);font-size:16px}.msg{min-height:22px;font-size:14px}.msg.error{color:var(--danger)}.msg.ok{color:var(--ok)}.status-card{margin-top:16px;padding:16px;border-radius:12px;background:#0a1622;border:1px solid var(--line)}@media (max-width: 720px){.nav{flex-direction:column;align-items:flex-start}.steps{grid-template-columns:1fr}.btn,.invite-actions .btn{width:100%}}