*{box-sizing:border-box}:root{color:#111827;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--wechat-green:#07c160;--surface:#fff;--page-bg:#ededed;--line:#e5e7eb;--muted:#8a8f98;background:#d8dde5;font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans SC,sans-serif}body{min-width:320px;min-height:100vh;margin:0}button,input{font:inherit}button{border:0}.app-shell{background:#d8dde5;place-items:center;min-height:100vh;padding:28px;display:grid}.phone-frame{background:var(--page-bg);border:1px solid #0f172a1f;border-radius:34px;grid-template-rows:72px 1fr 76px;width:min(430px,100%);height:min(860px,100vh - 56px);min-height:680px;display:grid;overflow:hidden;box-shadow:0 28px 90px #0f172a3d,inset 0 1px #ffffff80}.auth-frame{background:#ededed;grid-template-rows:auto auto 1fr;padding:64px 28px 28px}.auth-hero{align-items:center;gap:14px;margin-bottom:34px;display:flex}.auth-hero h1{letter-spacing:0;margin:2px 0 0;font-size:26px;line-height:1.2}.auth-kicker{color:var(--wechat-green);margin:0;font-size:13px;font-weight:700}.auth-form{flex-direction:column;gap:12px;display:flex}.auth-field{color:#4b5563;gap:7px;font-size:14px;font-weight:600;display:grid}.auth-field input{color:#111827;background:var(--surface);border:0;border-radius:8px;outline:0;width:100%;height:48px;padding:0 14px}.auth-field input:focus{box-shadow:0 0 0 2px #07c16047}.auth-submit,.logout-button{cursor:pointer;border-radius:8px;justify-content:center;align-items:center;gap:7px;min-height:46px;display:inline-flex}.auth-submit{color:#fff;background:var(--wechat-green);margin-top:8px;font-weight:700}.auth-submit:disabled{cursor:wait;opacity:.72}.auth-error{color:#d92d20;margin:0}.auth-switch{justify-content:center;margin-top:20px;display:flex}.auth-switch button{color:#1677ff;cursor:pointer;background:0 0}.top-bar{background:#f6f6f6;border-bottom:1px solid #0000000f;justify-content:space-between;align-items:center;padding:18px 20px 10px;display:flex}.top-bar h1{letter-spacing:.01em;margin:0;font-size:22px;font-weight:700}.top-actions{gap:6px;display:flex}.top-actions button{color:#1f2937;cursor:pointer;background:0 0;border-radius:999px;place-items:center;width:36px;height:36px;display:grid}.top-actions button:hover{background:#0000000d}.content-area{padding:12px 0 18px;overflow:auto}.page-stack{flex-direction:column;gap:10px;display:flex}.search-box{height:38px;color:var(--muted);background:var(--surface);border-radius:8px;align-items:center;gap:7px;margin:0 14px 2px;padding:0 12px;display:flex}.search-box input{color:#111827;background:0 0;border:0;outline:0;width:100%}.search-box input::placeholder{color:#a0a4ab}.identifier-search-card,.list-card,.profile-card{background:var(--surface)}.conversation-row,.friend-row,.action-row,.group-row,.member-row,.search-result,.profile-card{align-items:center;gap:12px;min-height:68px;padding:10px 16px;display:flex}.conversation-list-item+.conversation-list-item .conversation-row,.conversation-row+.conversation-row,.friend-row+.friend-row,.action-row+.action-row,.group-row+.group-row,.member-row+.member-row{border-top:1px solid var(--line)}.row-button,.conversation-button{width:100%;color:inherit;text-align:left;cursor:pointer;background:0 0}.conversation-button{background:var(--surface)}.row-button:hover,.conversation-button:hover{background:#f8fafc}.avatar,.action-icon{color:#fff;letter-spacing:-.02em;border-radius:10px;flex:none;place-items:center;width:46px;height:46px;font-weight:700;display:grid}.avatar-large{border-radius:14px;width:64px;height:64px;font-size:25px}.avatar-green,.action-green{background:linear-gradient(135deg,#07c160,#22c55e)}.avatar-blue,.action-blue{background:linear-gradient(135deg,#1677ff,#60a5fa)}.avatar-purple,.action-purple{background:linear-gradient(135deg,#7c3aed,#a78bfa)}.avatar-orange,.action-orange{background:linear-gradient(135deg,#f97316,#fbbf24)}.action-gray{background:linear-gradient(135deg,#64748b,#94a3b8)}.row-main,.profile-main{flex:1;min-width:0}.row-trailing{color:#a0a4ab;flex:none;align-items:center;gap:8px;display:flex}.row-badge{color:#64748b;white-space:nowrap;background:#f1f5f9;border-radius:999px;max-width:72px;padding:3px 7px;font-size:12px;line-height:1}.row-title-line{justify-content:space-between;align-items:baseline;gap:10px;display:flex}strong{color:#111827;font-size:16px;font-weight:650;display:block}p,time{color:var(--muted);margin:4px 0 0;font-size:13px;line-height:1.35}time{white-space:nowrap;margin:0;font-size:12px}.unread-badge{color:#fff;background:#fa5151;border-radius:999px;align-self:flex-start;place-items:center;min-width:20px;height:20px;margin-top:4px;padding:0 6px;font-size:12px;font-weight:700;display:grid}.section-label{color:#7d828a;margin:6px 18px 4px;font-size:12px;font-weight:650}.contacts-page{gap:10px}.identifier-search-card{padding:10px 14px}.identifier-search-form{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px;display:grid}.identifier-field{background:#f5f6f7;margin:0}.compact-command,.text-command,.icon-command{cursor:pointer;border-radius:8px;justify-content:center;align-items:center;gap:5px;display:inline-flex}.compact-command{color:#fff;background:var(--wechat-green);white-space:nowrap;min-height:38px;padding:0 11px;font-weight:650}.text-command{color:#078d49;white-space:nowrap;background:#e8f8ef;padding:8px 10px;font-size:13px;font-weight:650}.text-command:disabled{color:#6b7280;cursor:default;background:#eef0f2}.icon-command{color:#1f2937;background:#eef0f2;width:34px;height:34px}.inline-status,.helper-line{color:#7d828a;margin:8px 2px 0;font-size:12px}.search-result{border-top:1px solid var(--line);min-height:62px;margin-top:10px;padding:10px 0 0}.friend-group+.friend-group{margin-top:10px}.group-workspace{flex-direction:column;gap:10px;display:flex}.panel-heading{align-items:center;gap:8px;padding:2px 14px 0;display:flex}.panel-heading h2,.group-detail h2{color:#111827;letter-spacing:0;margin:0;font-size:17px;font-weight:700}.group-actions{background:var(--surface);padding:10px 14px}.mini-form{grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:8px;display:grid}.mini-form+.mini-form{margin-top:8px}.mini-form label{flex-direction:column;gap:5px;min-width:0;display:flex}.mini-form label span{color:#6b7280;font-size:12px}.mini-form input{border:1px solid var(--line);color:#111827;background:#f9fafb;border-radius:8px;outline:0;width:100%;height:36px;padding:0 10px}.group-detail{background:var(--surface)}.group-detail-head{border-bottom:1px solid var(--line);align-items:center;gap:12px;min-height:86px;padding:12px 16px;display:flex}.member-list{margin:0;padding:0;list-style:none}.profile-card{min-height:104px;margin-bottom:8px}.profile-main strong{font-size:21px}.profile-edit-button{color:#57606f;cursor:pointer;background:#f4f5f7;border-radius:8px;flex:none;align-items:center;min-height:36px;padding:0 10px;display:flex}.profile-edit-button:hover{background:#ebecef}.profile-detail-card,.profile-edit-card{padding:0 16px}.profile-detail-list{margin:0}.profile-detail-list div{border-top:1px solid var(--line);grid-template-columns:minmax(112px,.8fr) minmax(0,1.2fr);align-items:center;gap:12px;min-height:44px;display:grid}.profile-detail-list div:first-child{border-top:0}.profile-detail-list dt,.profile-detail-list dd{min-width:0;margin:0;font-size:14px}.profile-detail-list dt{color:#6b7280}.profile-detail-list dd{color:#111827;text-align:right;overflow-wrap:anywhere}.profile-edit-form{flex-direction:column;gap:10px;padding:12px 0;display:flex}.profile-field{grid-template-columns:minmax(112px,.8fr) minmax(0,1.2fr);align-items:center;gap:12px;min-height:42px;display:grid}.profile-field span{color:#6b7280;font-size:14px}.profile-field input{border:1px solid var(--line);color:#111827;background:#f9fafb;border-radius:8px;outline:0;width:100%;min-width:0;height:34px;padding:0 10px}.profile-field input:focus{border-color:var(--wechat-green);background:#fff}.profile-form-actions{grid-template-columns:1fr 1fr;gap:10px;padding-top:4px;display:grid}.primary-button,.secondary-button{cursor:pointer;border-radius:8px;min-height:38px}.primary-button{color:#fff;background:var(--wechat-green)}.primary-button:disabled{cursor:default;opacity:.72}.secondary-button{color:#374151;background:#eef0f3}.form-error{color:#dc2626;margin:0;font-size:13px}.discover-page,.me-page{padding-top:10px}.logout-button{color:#ef4444;background:var(--surface);margin:8px 16px 0;font-weight:650}.logout-button:hover{background:#fff7f7}.tab-bar{background:#f7f7f7;border-top:1px solid #00000014;grid-template-columns:repeat(4,1fr);align-items:center;display:grid}.tab-item{color:#6b7280;cursor:pointer;background:0 0;align-content:center;place-items:center;gap:3px;height:100%;display:grid}.tab-item span{font-size:12px}.tab-item.active{color:var(--wechat-green)}.chat-window{background:var(--page-bg);grid-template-rows:auto 1fr auto;min-height:100%;display:grid}.chat-header{background:#f6f6f6;border-bottom:1px solid #0000000f;grid-template-columns:44px 1fr 44px;align-items:center;min-height:48px;padding:0 10px;display:grid}.chat-back-button{color:#111827;cursor:pointer;background:0 0;border-radius:999px;place-items:center;width:36px;height:36px;display:grid}.chat-back-button:hover{background:#0000000d}.chat-header h2{color:#111827;text-align:center;text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:17px;font-weight:700;overflow:hidden}.message-thread{flex-direction:column;gap:10px;min-height:0;padding:14px 14px 18px;display:flex;overflow:auto}.message-row{display:flex}.message-incoming{justify-content:flex-start}.message-outgoing{justify-content:flex-end}.message-body{flex-direction:column;gap:4px;max-width:78%;display:flex}.message-bubble{color:#111827;background:var(--surface);word-break:break-word;border-radius:8px;margin:0;padding:9px 11px;font-size:15px;line-height:1.45}.message-outgoing .message-bubble{background:#95ec69}.message-status{color:#8a8f98;font-size:11px;line-height:1.2}.message-outgoing .message-status{align-self:flex-end}.message-status-failed{color:#fa5151}.message-composer{background:#f7f7f7;border-top:1px solid #00000014;align-items:center;gap:8px;min-height:58px;padding:8px 10px 10px;display:flex}.message-composer input{color:#111827;background:var(--surface);border:0;border-radius:6px;outline:0;flex:1;min-width:0;height:40px;padding:0 12px}.message-composer button{color:#fff;background:var(--wechat-green);cursor:pointer;border-radius:6px;justify-content:center;align-items:center;gap:5px;min-width:72px;height:38px;font-weight:650;display:inline-flex}.message-composer button:disabled{color:#fff;cursor:not-allowed;background:#b7d8c3}@media (width<=520px){.app-shell{padding:0}.phone-frame{border:0;border-radius:0;width:100%;height:100vh;min-height:100vh}}@media (width<=360px){.identifier-search-form,.mini-form{grid-template-columns:1fr}.compact-command{width:100%}}