/* ════ 2026-09-03 前端统一规范：控件全局继承 ——字体混排跟源 */
button, select, input, textarea, option { font-family: var(--sans); }

/* ═══════════════════════════════════════════════════════════════════════
   幻方增长AI · Design System v10 — Refined Editorial
   思源宋体标题 · 靛蓝#4338ca + 金#d9840a · 深度质感 · 微动效
   ═══════════════════════════════════════════════════════════════════════ */
:root{
  --ink:#141726;--ink-2:#4a5268;--ink-3:#68708a;
  --bg:#f8f9fc;--card:#ffffff;--surface:#ffffff;--bg-sub:#f1f3fb;--bg-sunken:#eaecf5;--bg-hover:#eef0f9;
  --border:#e6e9f2;--border-strong:#d4d8e8;
  --brand:#4338ca;--brand-hover:#3730a3;--brand-active:#312a90;--brand-ink:#4338ca;
  --brand-soft:#eceeff;--brand-soft-2:#dfe2ff;--brand-soft-border:#d2d6fb;--indigo2:#6366f1;
  --gold:#d9840a;--gold-strong:#9a5b06;--gold-soft:#fef6ec;--gold-border:#f2d09a;
  --jade:#0d9488;--jade-strong:#0f766e;
  --green:#15803d;--green-strong:#166534;--green-soft:#e7f6ec;--green-border:#b6e4c4;
  --red:#dc2626;--red-strong:#b91c1c;--red-soft:#fdeaea;--red-border:#f4c0c0;
  --amber:#b45309;--amber-strong:#92400e;--amber-soft:#fdf1e3;--amber-border:#f2d6a8;
  --serif:'Noto Serif SC',serif;--sans:'Sora','Noto Sans SC',-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;
  --r-xl:24px;--r-lg:18px;--r:14px;--r-sm:10px;--r-xs:7px;--pill:999px;
  --sh1:0 1px 3px rgba(20,23,38,.04);--sh2:0 8px 30px -8px rgba(38,43,90,.10);--sh3:0 20px 50px -14px rgba(38,43,90,.18);--sh4:0 32px 72px -20px rgba(38,43,90,.25);
  --ring:0 0 0 3px rgba(67,56,202,.24);--ease:cubic-bezier(.22,1,.36,1);--t:.18s var(--ease);--t-slow:.35s var(--ease);
  /* legacy aliases */
  --bg2:#f1f3fb;--bg3:#f1f3fb;--bg4:#e9ecf7;--border2:#d3d8ea;--border3:#d3d8ea;
  --text:#141726;--text2:#4a5268;--text3:#68708a;--accent:#4338ca;--accent2:#4338ca;
  --green-bg:#e7f6ec;--red-bg:#fdeaea;--amber-bg:#fdf1e3;--blue-bg:#eceeff;
  --radius:14px;--radius-sm:10px;--radius-xs:7px;--radius-lg:18px;--transition:.18s var(--ease);
}
/* ── Dark mode ── */
[data-theme="dark"]{
  --ink:#e0e1ec;--ink-2:#a8a9bc;--ink-3:#7c7e99;
  --bg:#11121d;--card:#1a1b2a;--surface:#1a1b2a;--bg-sub:#202236;--bg-sunken:#181928;--bg-hover:#252740;
  --border:#2c2e44;--border-strong:#3b3d58;
  --brand:#818cf8;--brand-hover:#6d78f0;--brand-active:#5c66e8;--brand-ink:#a5b4fc;
  --brand-soft:#1d1f42;--brand-soft-2:#252756;--brand-soft-border:#333578;
  --indigo2:#818cf8;
  --gold:#f59e0b;--gold-strong:#fbbf24;--gold-soft:#2a2010;--gold-border:#5c4818;
  --jade:#2dd4bf;--jade-strong:#5eead4;
  --green:#22c55e;--green-strong:#4ade80;--green-soft:#112716;--green-border:#1a4d2a;
  --red:#ef4444;--red-strong:#f87171;--red-soft:#2d1315;--red-border:#5c2022;
  --amber:#f59e0b;--amber-strong:#fbbf24;--amber-soft:#2d2412;--amber-border:#5c4818;
  --sh1:0 1px 3px rgba(0,0,0,.3);--sh2:0 8px 30px -8px rgba(0,0,0,.45);--sh3:0 20px 50px -14px rgba(0,0,0,.55);
  --ring:0 0 0 3px rgba(129,140,248,.3);
  --bg2:#222336;--bg3:#222336;--bg4:#181928;--border2:#3c3e58;--border3:#3c3e58;
  --text:#e0e1ec;--text2:#a8a9bc;--text3:#7c7e99;--accent:#818cf8;--accent2:#a5b4fc;
  --green-bg:#112716;--red-bg:#2d1315;--amber-bg:#2d2412;--blue-bg:#1e2044;
  color-scheme:dark;
}
[data-theme="dark"] body.lp{background:var(--bg)}
[data-theme="dark"] .side{background:var(--surface);border-color:var(--border)}
[data-theme="dark"] .btn-primary{background:var(--brand);color:#0f1020}
[data-theme="dark"] .btn-secondary{background:var(--bg-sub);color:var(--ink);border-color:var(--border)}
[data-theme="dark"] .btn-outline{color:var(--ink-2);border-color:var(--border-strong)}
[data-theme="dark"] .card,[data-theme="dark"] .stat-card{background:var(--card);border-color:var(--border)}
[data-theme="dark"] .msg.assistant .msg-bubble{background:var(--bg-sub);color:var(--ink)}
[data-theme="dark"] .msg.user .msg-bubble{background:var(--brand-soft);color:var(--ink)}
[data-theme="dark"] .msg-avatar{background:var(--brand-soft);color:var(--brand-ink)}
[data-theme="dark"] .msg.user .msg-avatar{background:var(--bg-sunken);color:var(--ink-2)}
#ucAv.seal{border-radius:50%}.seal img{width:100%;height:100%;object-fit:contain;border-radius:inherit}.msg-avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover}.avatar-fallback{font-size:.8125rem;font-weight:700}.avatar-text{font-size:.8125rem;font-weight:700}
#ucAv.seal{border-radius:50%}.seal img{width:100%;height:100%;object-fit:contain;border-radius:inherit}.msg-avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover}.avatar-fallback{font-size:.8125rem;font-weight:700}.avatar-text{font-size:.8125rem;font-weight:700}
[data-theme="dark"] .chat-input-area{background:var(--surface);border-color:var(--border)}
[data-theme="dark"] .chat-input-row textarea{background:var(--bg);color:var(--ink);border-color:var(--border)}
[data-theme="dark"] .tool-btn{color:var(--ink-2);border-color:var(--border)}
[data-theme="dark"] .tool-btn.active{background:var(--brand-soft);color:var(--brand-ink);border-color:var(--brand-soft-border)}
[data-theme="dark"] .modal{background:var(--surface)}
[data-theme="dark"] .modal input,[data-theme="dark"] .modal select,[data-theme="dark"] .modal textarea{background:var(--bg);color:var(--ink);border-color:var(--border)}
[data-theme="dark"] .menu-toggle{background:var(--surface);border-color:var(--border)}
[data-theme="dark"] .snew{background:var(--brand-soft);color:var(--brand-ink);border-color:var(--brand-soft-border)}
[data-theme="dark"] .sfoot{border-color:var(--border)}
[data-theme="dark"] .team{background:var(--bg-sub)}
[data-theme="dark"] .lp-nav{background:rgba(17,18,29,.85);border-color:var(--border)}
[data-theme="dark"] .login-card{background:var(--surface);border-color:var(--border)}
[data-theme="dark"] .login-card input{background:var(--bg);color:var(--ink);border-color:var(--border-strong)}
[data-theme="dark"] .welcome-suggestions button{background:var(--surface);color:var(--ink-2);border-color:var(--border)}
[data-theme="dark"] .welcome-suggestions button:hover{color:var(--ink);border-color:var(--brand-soft-border);background:var(--brand-soft)}
[data-theme="dark"] .emp,[data-theme="dark"] .emp-q:hover{background:var(--card)}
[data-theme="dark"] .tabs{background:var(--bg-sub)}
[data-theme="dark"] .tab-btn.active{background:var(--surface);color:var(--ink)}
[data-theme="dark"] .step{background:var(--surface);border-color:var(--border)}
[data-theme="dark"] .plan{background:var(--surface);border-color:var(--border)}
[data-theme="dark"] .lp-cta{background:linear-gradient(135deg,#1d1f42,#1f2138 40%,#2a2010 100%)}
[data-theme="dark"] .plan-feats{background:var(--bg-sub)}
[data-theme="dark"] .lp-kicker{background:var(--brand-soft);border-color:var(--brand-soft-border)}
[data-theme="dark"] .qa-icon{background:#1e2044}
.auto-link{color:var(--brand-ink);word-break:break-all;text-decoration:underline;text-underline-offset:2px}
[data-theme="dark"] .auto-link{color:var(--brand-ink)}
.auto-link:hover{color:var(--brand-hover)}
/* ── Theme toggle ── */
.theme-toggle{width:36px;height:36px;border-radius:50%;background:var(--bg-sub);border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;margin-left:auto;transition:background var(--t);color:var(--ink-2)}
.theme-toggle:hover{background:var(--bg-hover)}
.theme-toggle svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2}

/* ── 侧边栏右上角纵向按钮组：主题切换在上，中英切换在下 ── */
.side-actions{display:flex;flex-direction:column;align-items:flex-end;gap:6px;margin-left:auto;align-self:flex-start}
.side-actions .theme-toggle{margin-left:0}
.lang-toggle{display:flex;flex-direction:column;align-items:center;gap:1px;padding:4px 9px;border-radius:var(--pill);background:var(--bg-sub);border:1px solid var(--border);cursor:pointer;font-family:var(--sans);line-height:1.25;transition:all var(--t)}
.lang-toggle:hover{border-color:var(--brand-soft-border);background:var(--brand-soft)}
.lang-it{font-size:.6875rem;font-weight:600;color:var(--ink-3);white-space:nowrap;transition:color var(--t);line-height:1.3}
.lang-it.active{color:var(--brand-ink)}

/* ═══════════════════ RESET & BASE ═══════════════════ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;font-size:16px}
body{font-family:var(--sans);font-weight:400;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-y:auto;overflow-x:hidden}
body.app{padding-left:260px;padding-bottom:0}
body.lp{padding-left:0;background:#fff}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:2px}

/* ── Scrollbar ── */
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border-strong);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--ink-3)}
*{scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}

/* ═══════════════════ TYPOGRAPHY ═══════════════════ */
h1,h2,h3{font-family:var(--serif);font-weight:700;color:var(--ink);line-height:1.25}
h1{font-size:2rem;margin-bottom:8px}h2{font-size:1.5rem}h3{font-size:1.125rem}
a{color:var(--brand-ink);text-decoration:none}p{margin-bottom:8px}
small,.text-xs{font-size:.8125rem}.text-sm{font-size:.875rem}.text-muted{color:var(--ink-3)}.text-red{color:var(--red)}.text-center{text-align:center}
.truncate{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.font-bold{font-weight:600}

/* ═══════════════════ LAYOUT ═══════════════════ */
.page-wrap{max-width:1100px;margin:0 auto;padding:36px 24px 80px}
.flex{display:flex}.flex-wrap{flex-wrap:wrap}.items-center{align-items:center}.items-start{align-items:flex-start}.justify-between{justify-content:space-between}.justify-center{justify-content:center}
.gap-1{gap:4px}.gap-2{gap:8px}.gap-3{gap:16px}.gap-4{gap:24px}
.mb-1{margin-bottom:8px}.mb-2{margin-bottom:16px}.mb-3{margin-bottom:24px}.mb-4{margin-bottom:36px}.mt-1{margin-top:8px}.mt-2{margin-top:16px}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.grid-auto{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px}

/* ═══════════════════ SIDEBAR ═══════════════════ */
.side{position:fixed;left:0;top:0;bottom:0;width:260px;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;z-index:100;overflow:hidden}
.sbrand{display:flex;align-items:center;gap:10px;padding:22px 20px 16px;position:relative}
.sbrand .bt{font-size:1.25rem;font-weight:800;font-family:var(--serif);color:var(--ink);display:block}
.sbrand small{font-size:.8125rem;color:var(--ink-3)}
.bell{width:36px;height:36px;border-radius:50%;background:var(--bg-sub);display:flex;align-items:center;justify-content:center;cursor:pointer;position:absolute;right:16px;top:18px;position:relative;transition:background var(--t)}
.bell:hover{background:var(--bg-hover)}
.bell::after{content:'';width:8px;height:8px;background:var(--red);border-radius:50%;position:absolute;top:6px;right:8px}
.bell svg{width:18px;height:18px;color:var(--ink-2);stroke:currentColor;fill:none}
.uwrap{padding:0 20px 16px;border-bottom:1px solid var(--border);margin-bottom:8px}
.urow{display:flex;align-items:center;gap:10px}
.uav{position:relative;flex-shrink:0}
.on{width:10px;height:10px;background:var(--green);border:2px solid var(--surface);border-radius:50%;position:absolute;bottom:0;right:0}
.uname{font-size:.875rem;font-weight:600;color:var(--ink)}
.usub{font-size:.8125rem;color:var(--ink-3)}
.cred{margin-top:12px}
.credtop{display:flex;justify-content:space-between;font-size:.8125rem;color:var(--ink-2);margin-bottom:6px}
.prog{height:6px;background:var(--bg-sunken);border-radius:3px;overflow:hidden}
.prog i{display:block;height:100%;background:linear-gradient(90deg,var(--brand-ink),var(--indigo2));border-radius:3px;transition:width .5s var(--ease)}
.snew{display:flex;align-items:center;gap:6px;margin:0 16px 16px;padding:10px 14px;border-radius:var(--r-sm);background:var(--brand-soft);color:var(--brand-ink);font-weight:600;font-size:.875rem;text-align:center;justify-content:center;transition:all var(--t);border:1px solid var(--brand-soft-border)}
.snew:hover{background:var(--brand-soft-2);transform:translateY(-1px)}
.snew svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:2}
.side-scroll{flex:1;overflow-y:auto;padding:0 12px}
.slbl{font-size:.75rem;font-weight:600;color:var(--ink-3);letter-spacing:.08em;padding:8px 10px 4px;text-transform:uppercase}
.snav{display:flex;flex-direction:column;gap:2px;margin-bottom:12px}
.item{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:var(--r-sm);font-size:.875rem;font-weight:500;color:var(--ink-2);transition:all var(--t);position:relative}
.item:hover{background:var(--bg-hover);color:var(--ink)}
.item.active{background:var(--brand-soft);color:var(--brand-ink);font-weight:600}
.chip{width:22px;height:22px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.chip svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.8}
.dotb{width:7px;height:7px;background:var(--green);border-radius:50%;margin-left:auto}
.team{display:flex;align-items:center;gap:12px;margin:12px 8px 16px;padding:12px;background:var(--bg-sub);border-radius:var(--r-sm)}
.stack{display:flex;flex-shrink:0}
.stack img,.stack .more{width:32px;height:32px;border-radius:50%;border:2px solid var(--surface);margin-left:-10px;object-fit:cover}
.stack img:first-child,.stack .more:first-child{margin-left:0}
.more{width:32px;height:32px;border-radius:50%;background:var(--brand-soft);border:2px solid var(--surface);display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;color:var(--brand-ink);margin-left:-10px}
.tt{font-size:.8125rem;font-weight:600;color:var(--ink)}.ts{font-size:.75rem;color:var(--ink-3)}
.sfoot{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-top:1px solid var(--border);font-size:.8125rem}
.sfoot a{display:flex;align-items:center;gap:6px;color:var(--ink-2)}
.sfoot .lo{background:none;border:none;font-family:inherit;font-size:.8125rem;color:var(--ink-3);cursor:pointer;display:flex;align-items:center;gap:6px;padding:4px 8px;border-radius:var(--r-xs)}
.sfoot .lo:hover{color:var(--red);background:var(--red-soft)}
.sfoot svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:1.8}

/* ── Mobile menu toggle ── */
.menu-toggle{display:none;position:fixed;top:16px;left:16px;z-index:200;width:40px;height:40px;border-radius:var(--r-sm);background:var(--surface);border:1px solid var(--border);cursor:pointer;align-items:center;justify-content:center;box-shadow:var(--sh1);transition:left .25s var(--ease)}
.menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{display:block;width:18px;height:2px;background:var(--ink-2);border-radius:1px;position:relative}
.menu-toggle span::before,.menu-toggle span::after{content:'';position:absolute;left:0}
.menu-toggle span::before{top:-5px}.menu-toggle span::after{top:5px}

/* ── Bottom tab bar ── */

@media(max-width:900px){
  body.app{padding-left:0}
  .side{transform:translateX(-100%);transition:transform .25s var(--ease)}.side.open{transform:translateX(0)}
  .menu-toggle{display:flex}
  body.app .page-wrap{padding:56px 16px 80px}
}

/* ═══════════════════ CARDS ═══════════════════ */
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--sh1);padding:20px;transition:all var(--t-slow)}
.card:hover{box-shadow:var(--sh2)}
.stat-card{padding:24px;background:var(--card);border:1px solid var(--border);border-radius:var(--r);transition:all var(--t-slow);position:relative;overflow:hidden}
.stat-card:hover{border-color:var(--brand-soft-border);box-shadow:var(--sh2);transform:translateY(-2px)}
.stat-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--brand),var(--indigo2));border-radius:3px 3px 0 0;opacity:0;transition:opacity var(--t)}
.stat-card:hover::before{opacity:1}
.stat-label{font-size:.8125rem;color:var(--ink-3);margin-bottom:6px;text-transform:uppercase;letter-spacing:.04em}
.stat-value{font-size:2rem;font-weight:800;font-family:var(--serif);color:var(--ink);line-height:1.1}
.ring-card{display:flex;align-items:center;gap:24px}

/* ═══════════════════ BUTTONS ═══════════════════ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 22px;border-radius:var(--r);font-family:var(--sans);font-size:.875rem;font-weight:600;cursor:pointer;transition:all var(--t);border:1px solid transparent;white-space:nowrap;position:relative;overflow:hidden}
.btn::after{content:'';position:absolute;inset:0;background:radial-gradient(circle at center,rgba(255,255,255,.2) 0%,transparent 70%);opacity:0;transition:opacity var(--t)}
.btn:hover::after{opacity:1}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-1px);box-shadow:0 4px 16px rgba(67,56,202,.3)}
.btn-secondary{background:var(--bg-sub);color:var(--ink);border-color:var(--border)}
.btn-secondary:hover{background:var(--bg-hover);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--ink-2);border-color:var(--border-strong)}
.btn-outline:hover{background:var(--bg-hover);color:var(--ink);border-color:var(--ink-3);transform:translateY(-1px)}
.btn-danger{background:var(--red);color:#fff}.btn-danger:hover{background:var(--red-strong);transform:translateY(-1px);box-shadow:0 4px 16px rgba(220,38,38,.3)}
.btn-ghost{background:transparent;color:var(--ink-2);border-color:transparent}.btn-ghost:hover{background:var(--bg-hover)}
.btn-sm{padding:6px 14px;font-size:.8125rem;border-radius:var(--r-sm)}
.btn-lg{padding:14px 32px;font-size:1rem;border-radius:var(--r)}
.btn-block{width:100%}

/* ═══════════════════ BADGES ═══════════════════ */
.badge{display:inline-flex;align-items:center;padding:2px 10px;border-radius:var(--pill);font-size:.75rem;font-weight:600}
.badge-green{background:var(--green-soft);color:var(--green-strong)}
.badge-red{background:var(--red-soft);color:var(--red-strong)}
.badge-amber{background:var(--amber-soft);color:var(--amber-strong)}
.badge-blue{background:var(--brand-soft);color:var(--brand-ink)}
.badge-purple{background:#ede9fe;color:#5b21b6}
.tag{font-size:.75rem;padding:1px 8px;border-radius:var(--pill);background:var(--brand-soft);color:var(--brand-ink);font-weight:600;margin-left:6px}
.seal{width:36px;height:36px;border-radius:22%;background:var(--brand-ink);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-weight:900;font-size:1.25rem;flex-shrink:0}

/* ═══════════════════ MODAL ═══════════════════ */
.toast-container{position:fixed;bottom:24px;right:24px;z-index:9999;display:flex;flex-direction:column;gap:8px}
.toast{padding:12px 20px;border-radius:var(--r-sm);font-size:.875rem;font-weight:500;box-shadow:var(--sh3);display:flex;align-items:center;gap:8px;animation:slideIn .25s var(--ease)}
.toast-success{background:#e7f6ec;color:var(--green-strong);border:1px solid var(--green-border)}
.toast-error{background:#fdeaea;color:var(--red-strong);border:1px solid var(--red-border)}
.toast-info{background:var(--brand-soft);color:var(--brand-ink);border:1px solid var(--brand-soft-border)}
@keyframes slideIn{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
.modal-overlay{position:fixed;inset:0;background:rgba(20,23,38,.45);z-index:8000;display:none;align-items:center;justify-content:center;padding:24px}
.modal-overlay.open{display:flex}
.modal{background:var(--surface);border-radius:var(--r-lg);padding:28px;max-width:480px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:var(--sh3)}
.modal-title{font-size:1.125rem;font-weight:700;color:var(--ink);margin-bottom:16px;font-family:var(--serif)}
.modal input,.modal select,.modal textarea{width:100%;padding:10px 14px;border-radius:var(--r-sm);border:1px solid var(--border);font-family:var(--sans);font-size:.875rem;background:var(--bg);color:var(--ink);outline:none;transition:border var(--t)}
.modal input:focus,.modal select:focus,.modal textarea:focus{border-color:var(--brand);box-shadow:var(--ring)}
.modal label{display:block;font-size:.8125rem;font-weight:600;color:var(--ink-2);margin-bottom:4px}

/* ═══════════════════ MISC ═══════════════════ */
.spinner{width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--brand);border-radius:50%;animation:spin .6s linear infinite;margin:0 auto}
.spinner-lg{width:32px;height:32px;border-width:3px}
@keyframes spin{to{transform:rotate(360deg)}}
.empty-state{text-align:center;padding:40px 20px}
.empty-state .icon{font-size:2.5rem;margin-bottom:12px;display:block}
/* ════ 2026-09-03 全站统一线性图标（替代彩色 emoji）══ */
.ico{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;display:inline-block;vertical-align:-3px;flex:none}
.empty-state .icon svg{width:40px;height:40px;margin:0 auto}
.empty-state h3{font-size:1.125rem;margin-bottom:4px}
.empty-state p{color:var(--ink-3);font-size:.875rem;margin-bottom:16px}

/* ═══════════════════ CHAT ═══════════════════ */
.chat-layout{display:flex;height:100vh;flex-direction:column}
.chat-messages{flex:1;overflow-y:auto;padding:20px}
.chat-input-area{padding:12px 20px 20px;border-top:1px solid var(--border);background:var(--surface)}
.chat-toolbar{display:flex;align-items:center;gap:8px;margin-bottom:10px;flex-wrap:wrap}
.chat-input-row{display:flex;gap:8px;align-items:flex-end}
.chat-input-row textarea{flex:1;padding:12px 16px;border-radius:var(--r);border:1px solid var(--border);font-family:var(--sans);font-size:.875rem;resize:none;outline:none;background:var(--bg);min-height:44px;max-height:180px}
.chat-input-row textarea:focus{border-color:var(--brand);box-shadow:var(--ring)}
.send-btn{width:44px;height:44px;border-radius:50%;background:var(--brand);color:#fff;border:none;font-size:1.25rem;cursor:pointer;flex-shrink:0;display:flex;align-items:center;justify-content:center;transition:all var(--t)}
.send-btn:hover{background:var(--brand-hover);box-shadow:0 4px 16px rgba(67,56,202,.3)}
.send-btn:disabled{background:var(--border-strong);cursor:not-allowed;box-shadow:none}
.tool-btn{padding:5px 10px;border-radius:var(--r-xs);background:transparent;border:1px solid var(--border);font-size:.75rem;cursor:pointer;color:var(--ink-2);font-family:var(--sans);transition:all var(--t)}
.tool-btn:hover{color:var(--ink);border-color:var(--ink-3)}
.tool-btn.active{background:var(--brand-soft);color:var(--brand-ink);border-color:var(--brand-soft-border)}

/* ── Messages ── */
.msg{display:flex;gap:10px;margin-bottom:20px;animation:fadeIn .2s ease}
.msg.user{flex-direction:row-reverse}
.msg-avatar{width:34px;height:34px;border-radius:50%;background:var(--brand-soft);display:flex;align-items:center;justify-content:center;font-size:.8125rem;font-weight:700;color:var(--brand-ink);flex-shrink:0}
.msg.user .msg-avatar{background:var(--bg-sunken);color:var(--ink-2)}
#ucAv.seal{border-radius:50%}.seal img{width:100%;height:100%;object-fit:contain;border-radius:inherit}.msg-avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover}.avatar-fallback{font-size:.8125rem;font-weight:700}.avatar-text{font-size:.8125rem;font-weight:700}
#ucAv.seal{border-radius:50%}.seal img{width:100%;height:100%;object-fit:contain;border-radius:inherit}.msg-avatar img{width:100%;height:100%;border-radius:50%;object-fit:cover}.avatar-fallback{font-size:.8125rem;font-weight:700}.avatar-text{font-size:.8125rem;font-weight:700}
.msg-bubble{max-width:72%;padding:10px 16px;border-radius:var(--r);font-size:.875rem;line-height:1.65;word-break:break-word;width:fit-content}
.msg.assistant .msg-bubble{background:var(--bg-sub);color:var(--ink);border-radius:4px var(--r) var(--r) var(--r)}
.msg.user .msg-bubble{background:var(--brand-soft);color:var(--ink);border-radius:var(--r) 4px var(--r) var(--r)}
.msg.user .msg-bubble{margin-left:auto}
.msg-meta{font-size:.75rem;color:var(--ink-3);margin-top:4px}
.welcome{text-align:center;padding:80px 20px 40px}
.welcome-icon{width:64px;height:64px;margin:0 auto 16px;border-radius:22%;background:transparent}
.welcome h2{font-size:1.5rem;margin-bottom:8px}
.welcome p{color:var(--ink-3);margin-bottom:24px}
.welcome-suggestions{display:flex;flex-wrap:nowrap;gap:8px;justify-content:center;max-width:none;margin:0 auto;overflow-x:auto;padding-bottom:4px}
.welcome-suggestions button{padding:8px 16px;border-radius:var(--pill);border:1px solid var(--border);background:var(--surface);color:var(--ink-2);cursor:pointer;font-size:.8125rem;font-family:var(--sans);transition:all var(--t)}
.welcome-suggestions button:hover{color:var(--ink);border-color:var(--brand-soft-border);background:var(--brand-soft);transform:translateY(-1px)}
.typing{display:flex;gap:4px;align-items:center;padding:4px 0}
.typing span{width:6px;height:6px;border-radius:50%;background:var(--ink-3);animation:blink 1.4s infinite ease-in-out both}
.typing span:nth-child(2){animation-delay:.16s}.typing span:nth-child(3){animation-delay:.32s}
@keyframes blink{0%,80%,100%{opacity:.2}40%{opacity:1}}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* ═══════════════════ LANDING PAGE ═══════════════════ */
.lp-nav{position:fixed;top:0;left:0;right:0;z-index:50;background:rgba(255,255,255,.82);backdrop-filter:blur(16px) saturate(180%);border-bottom:1px solid transparent;transition:all var(--t-slow)}
.lp-nav.scrolled,[data-theme="dark"] .lp-nav{border-bottom-color:var(--border);box-shadow:0 1px 8px rgba(20,23,38,.06)}
[data-theme="dark"] .lp-nav.scrolled{box-shadow:0 1px 8px rgba(0,0,0,.3)}
.lp-nav-inner{max-width:1140px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:14px 28px}
.lp-brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:900;font-size:1.25rem;color:var(--ink)}
.lp-brand .seal{width:34px;height:34px;border-radius:22%}
.lp-nav-links{display:flex;gap:28px}
.lp-nav-links a{color:var(--ink-2);font-size:.875rem;font-weight:500;transition:color var(--t);position:relative}
.lp-nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;right:0;height:2px;background:var(--brand);border-radius:1px;transform:scaleX(0);transition:transform var(--t)}
.lp-nav-links a:hover{color:var(--ink)}.lp-nav-links a:hover::after{transform:scaleX(1)}

.lp-hero{max-width:1140px;margin:0 auto;padding:140px 28px 100px;display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center;position:relative}
.lp-hero::before{content:'';position:absolute;top:-200px;right:-300px;width:700px;height:700px;border-radius:50%;background:radial-gradient(circle,rgba(67,56,202,.04) 0%,transparent 70%);pointer-events:none}
.lp-hero::after{content:'';position:absolute;bottom:-100px;left:-200px;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(217,132,10,.04) 0%,transparent 70%);pointer-events:none}
.lp-hero>*{position:relative;z-index:1}
.lp-kicker{font-size:.8125rem;font-weight:600;color:var(--brand-ink);margin-bottom:20px;display:inline-flex;align-items:center;gap:8px;padding:5px 16px 5px 12px;border-radius:var(--pill);background:var(--brand-soft);border:1px solid var(--brand-soft-border)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--green);display:inline-block;animation:pulse-dot 2s infinite}
@keyframes pulse-dot{0%,100%{box-shadow:0 0 0 0 rgba(21,128,61,.4)}50%{box-shadow:0 0 0 6px rgba(21,128,61,0)}}
.lp-hero h1{font-size:3.25rem;font-weight:900;line-height:1.15;margin-bottom:20px;letter-spacing:-.02em}
.lp-hero h1 span{color:var(--brand-ink);position:relative;display:inline-block}
.lp-hero h1 span::after{content:'';position:absolute;bottom:4px;left:0;right:0;height:8px;background:var(--brand-soft-2);border-radius:4px;z-index:-1}
.lead{font-size:1.0625rem;color:var(--ink-2);margin-bottom:32px;line-height:1.75;max-width:440px}
.lp-activate{display:flex;gap:10px;max-width:420px}
.lp-activate input{flex:1;padding:14px 20px;border-radius:var(--r);border:1.5px solid var(--border-strong);font-family:var(--sans);font-size:.9375rem;outline:none;background:var(--card);transition:all var(--t)}
.lp-activate input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(67,56,202,.12)}
.lp-activate input::placeholder{color:var(--ink-3)}
.hint{font-size:.8125rem;color:var(--ink-3);margin-top:12px}.hint a{font-weight:600}

/* ── Roster ── */
.roster{position:relative}
.roster-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:20px;background:var(--card);border-radius:var(--r-xl);border:1px solid var(--border);box-shadow:var(--sh2)}
.roster-av{width:60px;height:60px;border-radius:50%;overflow:hidden;border:2px solid var(--card);box-shadow:0 2px 8px rgba(20,23,38,.08);transition:all var(--t)}
.roster-av:hover{transform:translateY(-4px) scale(1.08);box-shadow:0 8px 20px rgba(38,43,90,.15)}
.roster-av img{width:100%;height:100%;object-fit:cover}
.roster-cap{display:flex;align-items:center;gap:12px;margin-top:20px;padding:16px 20px;background:var(--card);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--sh1);transition:all var(--t)}
.roster-cap:hover{border-color:var(--brand-soft-border);box-shadow:var(--sh2)}
.roster-cap b{font-size:.9375rem}.roster-cap span{font-size:.8125rem;color:var(--ink-3)}

/* ── LP Sections ── */
.lp-section{padding:100px 28px;max-width:1140px;margin:0 auto}
#how{position:relative}
#how::before{content:'';position:absolute;top:0;left:28px;right:28px;height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent)}
.lp-h2{font-size:2.25rem;text-align:center;margin-bottom:12px;letter-spacing:-.01em}
.lp-h2 span{color:var(--brand-ink)}
.lp-sub{text-align:center;color:var(--ink-3);font-size:1.0625rem;margin-bottom:56px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;position:relative}
.steps::before{content:'';position:absolute;top:40px;left:20%;right:20%;height:2px;background:linear-gradient(90deg,var(--brand-soft-border),var(--border),var(--brand-soft-border));z-index:0}
.step{text-align:center;padding:40px 24px 32px;background:var(--card);border:1px solid var(--border);border-radius:var(--r-xl);position:relative;z-index:1;transition:all var(--t-slow)}
.step:hover{transform:translateY(-4px);box-shadow:var(--sh3);border-color:var(--brand-soft-border)}
.step .n{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--indigo2));color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.25rem;font-weight:800;font-family:var(--serif);margin:0 auto 18px;position:relative;z-index:1;box-shadow:0 4px 16px rgba(67,56,202,.25)}
.step h3{font-size:1.125rem;margin-bottom:8px}.step p{font-size:.875rem;color:var(--ink-3);line-height:1.7}

/* ── Team ── */
.team-filter{display:flex;gap:8px;justify-content:center;margin-bottom:40px}
.team-filter button{padding:8px 22px;border-radius:var(--pill);border:1.5px solid var(--border);background:transparent;font-size:.8125rem;font-weight:600;cursor:pointer;font-family:var(--sans);color:var(--ink-2);transition:all var(--t)}
.team-filter button.active{background:var(--brand);color:#fff;border-color:var(--brand);box-shadow:0 2px 12px rgba(67,56,202,.25)}
.team-filter button:not(.active):hover{border-color:var(--brand-soft-border);color:var(--ink);background:var(--bg-hover)}
.team-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.emp{display:flex;align-items:center;gap:16px;padding:16px 20px;background:var(--card);border:1px solid var(--border);border-radius:var(--r);transition:all var(--t-slow)}
.emp:hover{border-color:var(--brand-soft-border);box-shadow:var(--sh2);transform:translateY(-2px)}
.emp-av{width:52px;height:52px;border-radius:50%;overflow:hidden;flex-shrink:0;box-shadow:0 2px 8px rgba(20,23,38,.08)}
.emp-av img{width:100%;height:100%;object-fit:cover}
.emp-nm{font-weight:600;font-size:.9375rem;color:var(--ink)}
.emp-tg{font-size:.75rem;color:var(--ink-3);margin-top:2px}.emp-badge{margin-top:4px}

/* ── Plans ── */
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;max-width:960px;margin:0 auto}
.plan{background:var(--card);border:1px solid var(--border);border-radius:var(--r-xl);padding:36px 28px 28px;text-align:center;transition:all var(--t-slow);position:relative}
.plan:hover{transform:translateY(-4px)}
.plan.hot{border-color:var(--brand);box-shadow:var(--sh2),0 0 0 4px rgba(67,56,202,.06);transform:scale(1.03)}
.plan.hot:hover{transform:scale(1.03) translateY(-4px);box-shadow:var(--sh3),0 0 0 6px rgba(67,56,202,.08)}
.plan.hot::before{content:'最受欢迎';position:absolute;top:-13px;left:50%;transform:translateX(-50%);padding:4px 18px;border-radius:var(--pill);background:var(--brand);color:#fff;font-size:.75rem;font-weight:700;white-space:nowrap;box-shadow:0 2px 12px rgba(67,56,202,.3)}
.plan-price{font-size:3rem;font-weight:900;color:var(--ink);font-family:var(--serif);line-height:1}
.plan-price span{font-size:.9375rem;font-weight:500;color:var(--ink-3);margin-left:2px}
.plan.hot .plan-price{color:var(--brand-ink)}
.plan-desc{font-size:.875rem;color:var(--ink-3);margin:12px 0 24px}
.plan-feats{list-style:none;text-align:left;margin-bottom:28px;background:var(--bg-sub);border-radius:var(--r);padding:6px 16px}
.plan-feats li{padding:8px 0;font-size:.8125rem;color:var(--ink-2);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px}
.plan-feats li:last-child{border-bottom:none}
.plan-feats li::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--green);flex-shrink:0}
.lp-cta{text-align:center;padding:100px 28px;background:linear-gradient(135deg,var(--brand-soft),#ede9fe 40%,var(--gold-soft) 100%);position:relative;overflow:hidden}
.lp-cta::before,.lp-cta::after{content:'';position:absolute;border-radius:50%;pointer-events:none}
.lp-cta::before{top:-50%;left:-30%;width:400px;height:400px;background:radial-gradient(circle,rgba(99,102,241,.06) 0%,transparent 70%);animation:floatCta 12s infinite ease-in-out}
.lp-cta::after{bottom:-40%;right:-20%;width:500px;height:500px;background:radial-gradient(circle,rgba(217,132,10,.05) 0%,transparent 70%);animation:floatCta 15s infinite ease-in-out reverse}
@keyframes floatCta{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(20px,-20px) scale(1.05)}66%{transform:translate(-10px,10px) scale(.95)}}
.lp-cta>*{position:relative;z-index:1}
.lp-cta h2{font-size:2.25rem;margin-bottom:12px}
.lp-cta p{color:var(--ink-2);font-size:1.0625rem;margin-bottom:28px}
.lp-foot{text-align:center;padding:48px 28px;border-top:1px solid var(--border);font-size:.8125rem;color:var(--ink-3)}
.lp-foot a{color:var(--ink-2);margin:0 14px;transition:color var(--t)}.lp-foot a:hover{color:var(--ink)}

/* ═══════════════════ QUICK ACTIONS ═══════════════════ */
.quick-action{display:flex;align-items:center;gap:16px;padding:22px 20px;background:var(--card);border:1px solid var(--border);border-radius:var(--r);transition:all var(--t-slow);text-decoration:none;color:inherit;position:relative;overflow:hidden}
.quick-action::after{content:'';position:absolute;inset:0;background:radial-gradient(circle at 50% 50%,rgba(67,56,202,.04) 0%,transparent 60%);opacity:0;transition:opacity var(--t)}
.quick-action:hover{border-color:var(--brand-soft-border);box-shadow:var(--sh2);transform:translateY(-2px)}
.quick-action:hover::after{opacity:1}
.qa-icon{width:48px;height:48px;border-radius:var(--r-sm);background:var(--brand-soft);display:flex;align-items:center;justify-content:center;font-size:1.5rem;flex-shrink:0;transition:all var(--t)}
.quick-action:hover .qa-icon{background:var(--brand-soft-2);transform:scale(1.05)}
.qa-title{font-weight:600;font-size:.9375rem;color:var(--ink);margin-bottom:2px}
.qa-desc{font-size:.8125rem;color:var(--ink-3)}

/* ═══════════════════ EMPLOYEE CARDS ═══════════════════ */
.emps{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;padding:20px}
@media(max-width:1100px){.emps{grid-template-columns:repeat(3,1fr)}}
@media(max-width:768px){.emps{grid-template-columns:repeat(3,1fr)}}
.emp-q{text-align:center;padding:16px 10px 14px;border-radius:var(--r);transition:all var(--t-slow);text-decoration:none;color:inherit;display:block}
.emp-q:hover{background:var(--bg-hover);box-shadow:var(--sh1);transform:translateY(-3px)}
.emp-q:active{transform:translateY(-1px)}
.emp-q .nm{font-size:.875rem;font-weight:600;color:var(--ink);margin-top:6px}
.emp-q .tg{font-size:.75rem;color:var(--ink-3);margin-top:2px}
.av{width:62px;height:62px;border-radius:50%;overflow:hidden;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1.25rem;color:var(--brand-ink);background:var(--brand-soft);border:2px solid var(--brand-soft-border);margin:0 auto;transition:all var(--t)}
.emp-q:hover .av{border-color:var(--brand);box-shadow:0 4px 16px rgba(67,56,202,.15)}
.av img{width:100%;height:100%;object-fit:cover}
.ava-wrap{position:relative;display:inline-block}
.online{width:12px;height:12px;background:var(--green);border:2px solid var(--card);border-radius:50%;position:absolute;bottom:2px;right:2px;animation:onlinePulse 3s infinite}
@keyframes onlinePulse{0%,100%{box-shadow:0 0 0 0 rgba(21,128,61,.3)}50%{box-shadow:0 0 0 5px rgba(21,128,61,0)}}

/* ═══════════════════ MISC APP STYLES ═══════════════════ */
.code-row{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;flex-wrap:wrap;gap:12px}
.page-title{font-size:1.75rem;font-family:var(--serif);font-weight:700;color:var(--ink);margin-bottom:4px}
.page-sub{font-size:.9375rem;color:var(--ink-3);margin-bottom:28px}
.tabs{display:flex;gap:4px;margin-bottom:20px;background:var(--bg-sub);padding:4px;border-radius:var(--r-sm)}
.tab-btn{padding:7px 20px;border-radius:var(--r-xs);border:none;background:transparent;font-family:var(--sans);font-size:.8125rem;font-weight:500;color:var(--ink-2);cursor:pointer;transition:all var(--t)}
.tab-btn.active{background:var(--surface);color:var(--ink);box-shadow:var(--sh1)}

/* ═══════════════════ LOGIN ═══════════════════ */
.login-wrap{width:100%;max-width:420px;padding:24px}
.login-card{background:var(--surface);padding:36px 28px;border-radius:var(--r-lg);border:1px solid var(--border);box-shadow:var(--sh2);text-align:center}
.login-logo{width:56px;height:56px;margin:0 auto 16px;border-radius:22%;background:transparent}
.login-card h2{font-size:1.5rem;margin-bottom:6px}
.login-card input{width:100%;padding:14px 20px;border-radius:var(--r);border:1.5px solid var(--border-strong);font-family:var(--sans);font-size:.9375rem;margin:20px 0 12px;outline:none;text-align:center;letter-spacing:.05em;transition:all var(--t)}
.login-card input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(67,56,202,.12)}
.login-error{display:none;color:var(--red);font-size:.8125rem;margin-top:10px}
.login-footer{margin-top:20px;font-size:.8125rem}.login-footer a{color:var(--ink-3)}
.feature-tags{display:flex;flex-wrap:wrap;gap:4px;justify-content:center;margin-top:12px}
.feature-tags span{font-size:.75rem;padding:2px 10px;border-radius:var(--pill);background:var(--brand-soft);color:var(--brand-ink)}

/* ═══════════════════ HERO / GREETING ═══════════════════ */
.hero{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:28px;flex-wrap:wrap;gap:16px}
.eyebrow{font-size:.8125rem;color:var(--ink-3);margin-bottom:4px;text-transform:uppercase;letter-spacing:.06em}
.htitle{font-size:1.5rem;font-weight:700;color:var(--ink);font-family:var(--serif);line-height:1.35}
.htitle em{color:var(--brand-ink);font-style:normal}
.hsub{font-size:.875rem;color:var(--ink-2);margin-top:8px;max-width:520px;line-height:1.7}
.pill{display:inline-flex;align-items:center;gap:6px;padding:6px 16px;border-radius:var(--pill);background:var(--green-soft);color:var(--green-strong);font-size:.8125rem;font-weight:600;flex-shrink:0;white-space:nowrap}
.pill .g{width:8px;height:8px;border-radius:50%;background:var(--green)}

/* ── Ring chart ── */
.ring .rbg{stroke:var(--bg-sunken)}
.ring .rfg{stroke-linecap:round}
.ring-txt{fill:var(--ink);font-weight:700;font-family:var(--serif)}

/* ═══════════════════ FOOTER ═══════════════════ */
footer{text-align:center;padding:24px;font-size:.8125rem;color:var(--ink-3)}

/* ═══════════════════ RESPONSIVE ═══════════════════ */
@media(max-width:960px){
  .lp-nav-links{display:none}
  .lp-hero{grid-template-columns:1fr;gap:40px;padding:110px 20px 60px}
  .lp-hero h1{font-size:2.25rem}.lead{max-width:100%}
  .roster-grid{max-width:320px}.roster-av{width:50px;height:50px}
  .steps{grid-template-columns:1fr;gap:20px}.steps::before{display:none}
  .team-grid{grid-template-columns:1fr}
  .plans{grid-template-columns:1fr;max-width:400px}
  .plan.hot{transform:none}.plan.hot:hover{transform:translateY(-4px)}
}
@media(max-width:640px){
  .lp-hero{padding:100px 16px 48px}.lp-hero h1{font-size:1.875rem}
  .lp-activate{flex-direction:column}
  .lp-section{padding:64px 16px}.lp-h2{font-size:1.75rem}
  .lp-cta{padding:64px 16px}.lp-cta h2{font-size:1.75rem}
  .roster-grid{gap:8px;padding:14px}.roster-av{width:42px;height:42px}
}

/* ═══ 移动端适配增强（2026-08-11 穷尽审计）═══ */
.chat-layout{height:100vh;height:100dvh}
@media(max-width:900px){
  .chat-input-row textarea,
  .modal input,.modal select,.modal textarea,
  .lp-activate input,.login-card input{font-size:16px}
  .chat-messages{padding:12px}
  .chat-input-area{padding:12px 14px 16px}
  .param-btn{padding:9px 12px}
  .ref-btn{width:40px;height:40px}
}