:root{
  --navy:#0B1F3A; --navy2:#12294a; --gold:#C9A24B; --gold2:#E6C87A;
  --bg:#f4f6fa; --card:#fff; --text:#1c2a3a; --muted:#7a8699; --line:#e3e8f0;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:-apple-system,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}
.hidden{display:none!important}
#app{height:100%;display:flex;flex-direction:column}

/* 登录 */
#login-view{flex:1;display:flex;align-items:center;justify-content:center;background:linear-gradient(160deg,var(--navy) 0%,var(--navy2) 60%,#1a3a66 100%);padding:20px}
.login-card{background:rgba(255,255,255,.06);border:1px solid rgba(201,162,75,.35);border-radius:18px;padding:32px 26px;max-width:360px;width:100%;text-align:center;color:#eee;backdrop-filter:blur(6px)}
.login-logo{width:72px;height:72px;border-radius:16px;margin-bottom:10px}
.login-card h1{color:var(--gold2);letter-spacing:.12em;font-size:22px}
.login-card .sub{color:#aeb9cc;font-size:12px;margin:4px 0 10px}
.login-card .hint{font-size:12px;color:#8fa0b8;margin-bottom:14px}
.login-card input{width:100%;padding:11px 12px;margin-bottom:10px;border-radius:10px;border:1px solid rgba(255,255,255,.18);background:rgba(0,0,0,.25);color:#fff;font-size:14px}
.login-card input::placeholder{color:#7686a0}
.fine{font-size:10.5px;color:#7c8aa0;margin-top:14px;line-height:1.6}
.err{color:#ff8f8f;font-size:12px;min-height:16px;margin-top:6px}

/* 按钮 */
.btn{border:none;border-radius:10px;padding:11px 16px;font-size:14px;font-weight:600;cursor:pointer;width:100%}
.btn.gold{background:linear-gradient(135deg,var(--gold),var(--gold2));color:#241b06}
.btn.gold:active{transform:scale(.98)}
.icon-btn{background:none;border:none;color:var(--text);font-size:24px;line-height:1;cursor:pointer;padding:4px 10px}

/* 主界面 */
#main-view{flex:1;display:flex;flex-direction:column;min-height:0}
.topbar{background:var(--navy);color:#fff;display:flex;align-items:center;gap:8px;padding:10px 14px;padding-top:calc(10px + env(safe-area-inset-top))}
.topbar-logo{width:26px;height:26px;border-radius:6px}
.topbar-title{color:var(--gold2);font-weight:700;letter-spacing:.08em}
.topbar-user{margin-left:auto;font-size:12px;color:#aeb9cc;max-width:45%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#panel{flex:1;overflow-y:auto;min-height:0}
.tab{padding:14px}
.tab h2{font-size:15px;color:var(--muted);font-weight:600;margin-bottom:10px}

/* 列表 */
.list{display:flex;flex-direction:column;gap:8px}
.item{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 14px;display:flex;align-items:center;gap:12px;cursor:pointer}
.item:active{background:#f0f3f8}
.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--navy),#274b7e);color:var(--gold2);display:flex;align-items:center;justify-content:center;font-weight:700;flex-shrink:0}
.item-body{flex:1;min-width:0}
.item-name{font-weight:600;font-size:14px}
.item-sub{font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.badge{background:#d33;color:#fff;font-size:10px;border-radius:10px;padding:2px 7px;flex-shrink:0}
.time{font-size:10.5px;color:var(--muted);flex-shrink:0}

/* 卡片（钱包） */
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px}
.card-note{font-size:12px;color:var(--muted);margin-bottom:12px;line-height:1.6}
.fld-label{display:block;font-size:12px;color:var(--muted);margin:8px 0 4px}
.card input,.card select{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);font-size:14px;background:#fafbfd}
.card .btn{margin-top:12px}
.ok{color:#1d8a4e;font-size:12px;margin-top:8px}
.current{margin-top:12px;font-size:12px;line-height:1.7;word-break:break-all;background:#f6f8fc;border-radius:10px;padding:10px}

/* 聊天 */
#tab-chat{display:flex;flex-direction:column;height:100%;padding:0}
.chat-head{display:flex;align-items:center;gap:6px;background:var(--card);border-bottom:1px solid var(--line);padding:10px 12px}
.chat-peer{font-weight:700;font-size:14px}
.chat-sub{font-size:11px;color:var(--muted)}
#chat-msgs{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:8px;min-height:0}
.msg{max-width:78%;padding:9px 12px;border-radius:14px;font-size:14px;line-height:1.5;word-break:break-word}
.msg.me{align-self:flex-end;background:linear-gradient(135deg,var(--navy),#2a4d80);color:#fff;border-bottom-right-radius:4px}
.msg.them{align-self:flex-start;background:var(--card);border:1px solid var(--line);border-bottom-left-radius:4px}
.msg .t{display:block;font-size:10px;opacity:.6;margin-top:3px}
.chat-input{display:flex;gap:8px;padding:10px;background:var(--card);border-top:1px solid var(--line);padding-bottom:calc(10px + env(safe-area-inset-bottom))}
.chat-input input{flex:1;padding:11px 12px;border-radius:22px;border:1px solid var(--line);font-size:14px}
.chat-input .btn{width:auto;padding:10px 16px;border-radius:22px}

/* 底部导航 */
.tabbar{display:flex;background:var(--navy);padding:6px 0;padding-bottom:calc(6px + env(safe-area-inset-bottom))}
.tabbtn{flex:1;background:none;border:none;color:#93a3bb;font-size:20px;display:flex;flex-direction:column;align-items:center;gap:2px;cursor:pointer;padding:4px}
.tabbtn em{font-style:normal;font-size:11px}
.tabbtn.active{color:var(--gold2)}
.empty{color:var(--muted);font-size:13px;text-align:center;padding:30px 10px}

/* v2 新增 */
.dir-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.dir-head h2{margin:0}
.mini-btn{background:linear-gradient(135deg,var(--gold),var(--gold2));border:none;border-radius:8px;padding:7px 12px;font-size:12px;font-weight:700;color:#241b06;cursor:pointer}
.seg{display:flex;background:#e7ebf2;border-radius:10px;padding:3px;margin-bottom:10px}
.segb{flex:1;border:none;background:none;border-radius:8px;padding:8px;font-size:13px;font-weight:600;color:var(--muted);cursor:pointer}
.segb.active{background:#fff;color:var(--navy);box-shadow:0 1px 3px rgba(0,0,0,.08)}
.e2e{text-align:center;font-size:10.5px;color:var(--muted);background:#eef1f7;padding:4px}
.msg-who{font-size:11px;color:var(--gold);font-weight:700;margin-bottom:2px}
.modal{position:fixed;inset:0;background:rgba(11,31,58,.6);display:flex;align-items:center;justify-content:center;z-index:60;padding:20px}
.modal-card{background:#fff;border-radius:16px;padding:22px;width:100%;max-width:340px;max-height:80vh;overflow-y:auto}
.modal-card h3{font-size:16px;margin-bottom:12px;color:var(--navy)}
.modal-card input{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);font-size:14px;margin-bottom:10px}
.g-members{max-height:200px;overflow-y:auto;border:1px solid var(--line);border-radius:10px;padding:8px;margin-bottom:10px}
.g-mem{display:flex;align-items:center;gap:8px;font-size:13px;padding:6px 4px}
.g-mem input{width:auto}
.btn.ghost{background:#eef1f7;color:var(--muted);margin-top:8px}
.video-overlay{position:fixed;inset:0;background:var(--navy);z-index:70;display:flex;flex-direction:column}
.video-bar{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;padding-top:calc(10px + env(safe-area-inset-top));color:#fff;font-size:13px}
.notes-area{position:absolute;inset:0;background:var(--navy);display:flex;flex-direction:column;justify-content:center;padding:24px;z-index:5}
.notes-area h3{color:var(--gold2);margin-bottom:10px;font-size:16px}
.notes-area textarea{width:100%;border-radius:12px;border:1px solid rgba(255,255,255,.2);background:rgba(0,0,0,.3);color:#fff;padding:12px;font-size:14px;resize:vertical}
.notes-area .btn{margin-top:12px;width:auto}

/* v3 多语言 */
.lang-row{display:flex;justify-content:flex-end;margin-bottom:6px}
.lang-select{background:#fff;border:1px solid var(--line);border-radius:8px;padding:5px 8px;font-size:12px;color:var(--navy);max-width:110px}
.lang-select.dark{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.25)}
.lang-select.dark option{color:#1c2a3a}

/* v4 交易 */
.tx-balance-row{display:flex;align-items:baseline;gap:6px;margin-bottom:6px}
.tx-balance{font-size:32px;font-weight:800;color:var(--navy)}
.tx-cur{color:var(--muted);font-size:13px;font-weight:600}
.tx-feenote{font-size:11px;color:var(--muted);margin-bottom:12px}
.tx-fee{min-height:18px;font-size:12px;margin-top:6px}
.tx-ledger-title{margin:16px 0 8px;font-size:13px;color:var(--muted)}
#tx-form-transfer,#tx-form-withdraw,#tx-form-deposit{margin-top:12px}