:root{--ink: #0f3d3e;--ink-deep: #0a2a2b;--ink-soft: #e4edeb;--gold: #c9a45c;--gold-deep: #a8843e;--gold-light: #e8d5a8;--bg: #f5f6f4;--line: #e7eae7;--t1: #172222;--t2: #5b6868;--t3: #99a3a2;--down: #b5483b;--up: #1f7a5c;--warn: #c27c1a;--warn-soft: #fbf1e1}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;background:var(--bg);color:var(--t1);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif}.page{max-width:480px;min-height:100vh;margin:0 auto;padding-bottom:calc(32px + env(safe-area-inset-bottom))}.hero{background:radial-gradient(circle at top right,#1f5a5b,var(--ink) 45%,var(--ink-deep));color:#fff;padding:calc(40px + env(safe-area-inset-top)) 28px 64px}.logo{width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px;font-weight:800;color:var(--ink-deep);background:linear-gradient(135deg,#ddbe7c,#bf9750)}.hero h1{margin:20px 0 6px;font-size:26px}.hero p{margin:0;color:#ffffff9e;font-size:14px}.card{margin:-32px 16px 0;background:#fff;border-radius:24px;padding:22px 20px 18px;position:relative}.inviter{display:flex;gap:12px;align-items:center;background:var(--ink-soft);border-radius:16px;padding:12px 14px;margin-bottom:6px}.avatar{width:40px;height:40px;flex:none;border-radius:50%;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:600}.inviter-name{font-size:15px;margin-bottom:2px}.lv{display:inline-block;font-size:11px;font-weight:600;color:#1f6b55;background:#d3e6de;padding:1px 7px;border-radius:8px;margin-left:4px;vertical-align:1px}.warn{background:var(--warn-soft);color:var(--warn);font-size:13px;border-radius:12px;padding:10px 12px}label{display:block;font-size:13px;color:var(--t2);margin:16px 2px 8px}.field{display:flex;align-items:center;border:1px solid var(--line);border-radius:14px;padding:0 14px;height:50px}.field:focus-within{border-color:var(--ink)}.field input{flex:1;min-width:0;border:none;outline:none;font-size:16px;color:var(--t1);background:transparent}.field input::placeholder{color:var(--t3)}.prefix{color:var(--t2);padding-right:12px;margin-right:12px;border-right:1px solid var(--line)}.link{border:none;background:none;font-size:15px;font-weight:600;color:var(--ink);padding:0 0 0 10px;white-space:nowrap}.link:disabled{color:var(--t3)}.agree{display:flex;align-items:center;gap:6px;margin:18px 2px 4px;font-size:12.5px;color:var(--t2)}.agree b{color:var(--ink)}.agree-toggle{display:flex;align-items:center;gap:6px}.check{width:18px;height:18px;flex:none;border-radius:50%;border:1.5px solid var(--t3);font-size:11px;display:flex;align-items:center;justify-content:center}.check.on{background:var(--ink);border-color:var(--ink);color:#fff}.error{color:var(--down);font-size:13px;margin:12px 2px 0}.btn{display:block;width:100%;height:50px;margin-top:18px;border:none;border-radius:25px;background:var(--ink);color:#fff;font-size:16px;font-weight:600}.btn.gold{background:linear-gradient(90deg,#ddbe7c,#bf9750);color:var(--ink-deep);font-weight:700}.btn:disabled{opacity:.6}.faint{font-size:12px;color:var(--t3);line-height:1.7}.muted{font-size:14px;color:var(--t2);line-height:1.7}.center{text-align:center}.done{text-align:center;padding-top:30px}.done-icon{width:60px;height:60px;margin:0 auto;border-radius:50%;background:var(--up);color:#fff;font-size:30px;display:flex;align-items:center;justify-content:center}.done h2{margin:14px 0 6px}.mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b8;color:#fff;text-align:right;padding:16px 24px;z-index:10}.arrow{font-size:48px}.mask p{font-size:17px;line-height:1.8}.sheet-mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:9;display:flex;align-items:flex-end;justify-content:center}.sheet{width:100%;max-width:480px;height:85vh;background:#fff;border-radius:20px 20px 0 0;display:flex;flex-direction:column}.sheet-head{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid var(--line);font-size:16px}.sheet-body{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:4px 20px calc(24px + env(safe-area-inset-bottom));font-size:14.5px;line-height:1.75}.sheet-body h3{font-size:15.5px;margin:18px 0 4px}.sheet-body p{margin:8px 0 0}.sheet-body .li{margin-top:2px;padding-left:4px}.dl{max-width:480px;min-height:100vh;margin:0 auto;background:var(--bg)}.dl-hero{background:radial-gradient(circle at top right,#1f5a5b,var(--ink) 45%,var(--ink-deep));color:#fff;text-align:center;padding:calc(64px + env(safe-area-inset-top)) 28px 48px;min-height:72vh}.dl-logo{width:120px;height:120px;border-radius:28px;box-shadow:0 8px 24px #00000040}.dl-hero h1{margin:20px 0 6px;font-size:28px}.dl-hero>p{margin:0;color:#ffffffa6}.dl-btn{width:72%;margin:36px auto 0}.dl-sub{margin-top:12px!important;font-size:13px}.dl-note{margin-top:8px!important;font-size:12px;color:#ffffff80!important}.dl-steps{margin:16px;background:#fff;border-radius:20px;padding:18px 20px 20px}.dl-steps h2{font-size:17px;margin:0 0 8px}.dl-steps ol{margin:0;padding-left:20px;font-size:14px;line-height:1.8;color:var(--t1)}.dl-steps li{margin-top:10px}.dl-center{align-items:center}.dl-modal{width:82%;max-width:340px;background:#fff;border-radius:18px;padding:22px 20px 20px;text-align:center}.dl-modal h3{margin:0 0 10px}.dl-modal p{font-size:14px;line-height:1.7;color:var(--t2);margin:0 0 4px}