:root{
    --blue:#2563eb; --blue-d:#1e3a8a; --blue-l:#60a5fa;
    --indigo:#818cf8; --teal:#14b8a6; --amber:#f59e0b; --rose:#fb7185;
    --violet:#8b5cf6; --emerald:#10b981; --sky:#0ea5e9; --orange:#fb923c;
    --ink:#0f172a; --sub:#475569; --muted:#94a3b8;
    --line:#e8edf4; --bg:#f3f6fb; --card:#ffffff;
    --gold:#d97706; --green:#10b981; --red:#ef4444;
    --grad-hero:linear-gradient(125deg,#6d28d9 0%,#2563eb 30%,#06b6d4 60%,#db2777 100%);
    --grad-brand:linear-gradient(135deg,#7c3aed 0%,#2563eb 55%,#06b6d4 100%);
    --grad-warm:linear-gradient(135deg,#f59e0b 0%,#fb7185 100%);
    --grad-cool:linear-gradient(135deg,#8b5cf6 0%,#06b6d4 100%);
    --shadow:0 1px 3px rgba(15,23,42,.06),0 12px 34px rgba(15,23,42,.07);
    --shadow-lg:0 18px 50px rgba(124,58,237,.22);
  }
  *{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
  html{scroll-behavior:smooth}
  body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    background:var(--bg); color:var(--ink); line-height:1.75; -webkit-font-smoothing:antialiased;
  }
  .wrap{max-width:940px;margin:0 auto;padding:0 clamp(14px,4vw,18px) 80px}
  .ico{width:20px;height:20px;display:inline-block;vertical-align:-4px;flex:none}
  .sec-h .ico{width:22px;height:22px;margin-right:8px;color:#fff}

  /* ===== 一级导航 ===== */
  .topnav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.88);backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);box-shadow:0 1px 0 rgba(15,23,42,.03)}
  .tn-inner{max-width:940px;margin:0 auto;padding:0 clamp(14px,4vw,18px);height:54px;display:flex;align-items:center;gap:4px}
  .tn-brand{display:inline-flex;align-items:center;gap:8px;font-weight:900;font-size:14.5px;color:var(--ink);text-decoration:none;white-space:nowrap}
  .tn-brand .bdot{width:9px;height:9px;border-radius:50%;background:var(--grad-brand);box-shadow:0 0 0 3px rgba(37,99,235,.14)}
  .tn-spacer{flex:1}
  .tn-link{display:inline-flex;align-items:center;gap:5px;font-size:13.5px;font-weight:700;color:var(--sub);
    text-decoration:none;padding:7px 11px;border-radius:999px;transition:.2s;white-space:nowrap}
  .tn-link:hover{background:#eef4ff;color:var(--blue)}
  .tn-link.cur{background:#eef4ff;color:var(--blue)}
  .tn-link.soon{color:#9aa7b8;cursor:not-allowed;opacity:.8}
  .tn-link .ext{font-size:10px;opacity:.55}
  .tn-home{background:var(--grad-brand);color:#fff;box-shadow:0 4px 14px rgba(37,99,235,.28)}
  .tn-home:hover{color:#fff;filter:brightness(1.06);background:var(--grad-brand)}
  @media(max-width:680px){
    .tn-brand .btxt{display:none}
    .tn-link{padding:6px 9px;font-size:12.5px}
    .tn-inner{gap:2px}
  }

  /* ===== 首页推广位 ===== */
  .promo{display:block;position:relative;overflow:hidden;border-radius:20px;padding:22px;margin-bottom:20px;color:#fff;
    text-decoration:none;background:linear-gradient(125deg,#0f172a 0%,#1e3a8a 45%,#7c3aed 100%);box-shadow:0 18px 44px rgba(15,23,42,.26)}
  .promo:hover{color:#fff;text-decoration:none}
  .promo:active{transform:translateY(1px)}
  .promo:before{content:"";position:absolute;width:260px;height:260px;border-radius:50%;
    background:radial-gradient(circle,rgba(255,255,255,.22),transparent 70%);top:-105px;right:-75px;filter:blur(6px)}
  .promo .p-tag{position:relative;z-index:2;display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.16);
    border:1px solid rgba(255,255,255,.32);padding:4px 11px;border-radius:999px;font-size:11.5px;letter-spacing:1.5px}
  .promo h3{position:relative;z-index:2;margin:12px 0 6px;font-size:19px;line-height:1.45}
  .promo .p-sub{position:relative;z-index:2;font-size:13.5px;opacity:.92;line-height:1.75}
  .promo .p-list{position:relative;z-index:2;margin:13px 0 0;display:grid;gap:8px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}
  .promo .p-list div{display:flex;align-items:center;gap:8px;font-size:13px}
  .promo .p-list .ck{width:18px;height:18px;flex:none;border-radius:6px;background:rgba(255,255,255,.2);
    display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:800}
  .promo .p-cta{position:relative;z-index:2;display:inline-flex;align-items:center;gap:8px;margin-top:16px;
    background:#fff;color:#1e3a8a;font-weight:800;font-size:14px;padding:11px 20px;border-radius:999px;
    text-decoration:none;box-shadow:0 10px 26px rgba(0,0,0,.22);transition:.2s}
  .promo .p-cta:hover{transform:translateY(-2px)}
  .promo .p-foot{position:relative;z-index:2;margin-top:11px;font-size:11.5px;opacity:.72}

  .ad-strip{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:0 0 20px;padding:14px 16px;
    background:linear-gradient(135deg,#fffbeb,#fef3c7);border:1px solid #fde68a;border-radius:16px}
  .ad-strip .as-ico{width:38px;height:38px;flex:none;border-radius:11px;background:var(--grad-warm);
    display:flex;align-items:center;justify-content:center;color:#fff}
  .ad-strip .as-main{flex:1;min-width:180px}
  .ad-strip .as-t{font-weight:800;font-size:14px;color:#78350f}
  .ad-strip .as-d{font-size:12.5px;color:#92400e;line-height:1.6}
  .ad-strip .as-btn{flex:none;background:var(--grad-warm);color:#fff;font-weight:800;font-size:13px;
    padding:9px 16px;border-radius:999px;text-decoration:none;box-shadow:0 6px 16px rgba(245,158,11,.32)}

  /* ===== Hero ===== */
  header.hero{
    position:relative;overflow:hidden;
    background:var(--grad-hero);
    background-size:300% 300%;animation:heroShift 18s ease infinite;
    color:#fff;padding:clamp(40px,7vw,58px) 18px clamp(36px,6vw,50px);margin-bottom:28px;
    box-shadow:0 22px 55px rgba(109,40,217,.32);
  }
  @keyframes heroShift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
  /* dynamic mesh background */
  .hero-bg{position:absolute;inset:0;z-index:1;overflow:hidden;filter:blur(38px);pointer-events:none}
  .hero-bg .blob{position:absolute;border-radius:50%;mix-blend-mode:screen;opacity:.92;animation:blobFloat 16s ease-in-out infinite}
  .hero-bg .b1{width:48vw;height:48vw;left:-12vw;top:-20vw;background:radial-gradient(circle at 35% 35%,#f472b6,transparent 68%)}
  .hero-bg .b2{width:42vw;height:42vw;right:-10vw;top:-12vw;background:radial-gradient(circle at 50% 50%,#22d3ee,transparent 70%);animation-delay:-3s}
  .hero-bg .b3{width:40vw;height:40vw;left:26vw;bottom:-18vw;background:radial-gradient(circle at 50% 50%,#a78bfa,transparent 70%);animation-delay:-6.5s}
  .hero-bg .b4{width:32vw;height:32vw;right:16vw;bottom:-14vw;background:radial-gradient(circle at 50% 50%,#fbbf24,transparent 70%);animation-delay:-10s}
  @keyframes blobFloat{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(5vw,4vw) scale(1.18)}66%{transform:translate(-4vw,3vw) scale(.92)}}
  /* subtle moving sheen */
  header.hero > .sheen{content:"";position:absolute;inset:0;z-index:1;pointer-events:none;
    background:linear-gradient(115deg,transparent 30%,rgba(255,255,255,.18) 50%,transparent 70%);
    background-size:250% 250%;animation:sheen 9s ease-in-out infinite}
  @keyframes sheen{0%{background-position:120% 0}100%{background-position:-40% 0}}
  .hero-inner{position:relative;z-index:2;max-width:940px;margin:0 auto;padding:0 clamp(14px,4vw,18px)}
  .badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:2px;border:1px solid rgba(255,255,255,.45);
    padding:5px 13px;border-radius:999px;opacity:.95;margin-bottom:14px;backdrop-filter:blur(4px)}
  .badge .dot{width:7px;height:7px;border-radius:50%;background:#7dd3fc;box-shadow:0 0 0 4px rgba(125,211,252,.35);animation:pulse 2s infinite}
  @keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
  header.hero h1{font-size:clamp(25px,6.4vw,33px);font-weight:800;letter-spacing:1px;line-height:1.25}
  header.hero p{opacity:.94;margin-top:12px;font-size:clamp(14px,3.6vw,15.5px);max-width:660px}
  .trust{margin-top:20px;font-size:12.5px;opacity:.85;display:flex;flex-wrap:wrap;gap:6px 18px}
  .trust span{display:inline-flex;align-items:center;gap:6px;white-space:nowrap}
  .trust span:before{content:"";width:6px;height:6px;border-radius:50%;background:#7dd3fc}

  /* ===== Card & sections ===== */
  .card{background:var(--card);border:1px solid var(--line);border-radius:18px;
    box-shadow:var(--shadow);padding:clamp(18px,4.5vw,26px);margin-bottom:22px;transition:box-shadow .25s,transform .25s}
  .card.intake:hover{box-shadow:var(--shadow-lg)}
  .sec-h{font-size:clamp(18px,4.6vw,21px);font-weight:800;margin-bottom:16px;display:flex;align-items:center;gap:10px}
  .sec-h .n{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;flex:none;
    border-radius:10px;background:var(--grad-brand);color:#fff;font-size:15px;font-weight:800;
    box-shadow:0 4px 14px rgba(124,58,237,.40)}

  .field{margin-bottom:20px}
  .field > label{display:block;font-weight:700;margin-bottom:10px;font-size:15px}
  .hint{color:var(--muted);font-weight:400;font-size:13px;margin-left:6px}
  input[type=text],textarea{
    width:100%;border:1px solid var(--line);border-radius:11px;padding:12px 14px;
    font-size:15px;font-family:inherit;color:var(--ink);background:#fff;transition:.15s;
  }
  input[type=text]:focus,textarea:focus{outline:none;border-color:var(--violet);box-shadow:0 0 0 3px rgba(124,58,237,.15)}
  textarea{resize:vertical;min-height:96px;line-height:1.7}

  .opts{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}
  .opt{position:relative}
  .opt input{position:absolute;opacity:0;pointer-events:none}
  .opt label{display:flex;flex-direction:column;gap:3px;border:1px solid var(--line);border-radius:13px;padding:13px 14px;
    cursor:pointer;transition:.18s;font-size:14px;font-weight:700;background:#fff;height:100%}
  .opt label .d{display:block;font-weight:400;color:var(--sub);font-size:12px}
  .opt label:hover{border-color:var(--blue-l);transform:translateY(-2px);box-shadow:var(--shadow)}
  .opt input:checked + label{border-color:var(--violet);background:linear-gradient(135deg,#ede9fe,#e0f2fe);
    box-shadow:0 0 0 2px rgba(124,58,237,.22);transform:translateY(-2px)}
  .opt.stage label{font-size:15px}

  .slider-row{display:flex;align-items:center;gap:14px;padding:11px 0;border-bottom:1px dashed var(--line)}
  .slider-row:last-child{border-bottom:none}
  .slider-row .name{flex:1;min-width:0;font-weight:600;font-size:14.5px}
  .slider-row .name small{display:block;color:var(--muted);font-weight:400;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .slider-row input[type=range]{flex:none;width:200px;accent-color:var(--violet);cursor:pointer}
  .slider-row .val{flex:none;width:34px;text-align:center;font-weight:800;color:var(--violet)}

  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
    background:var(--grad-brand);color:#fff;border:none;border-radius:13px;padding:15px 28px;
    font-size:16px;font-weight:700;cursor:pointer;transition:.18s;box-shadow:0 8px 22px rgba(124,58,237,.32)}
  .btn:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(124,58,237,.45)}
  .btn:active{transform:translateY(0)}
  .btn.ghost{background:#fff;color:var(--blue);border:1px solid var(--blue);box-shadow:none}
  .btn.ghost:hover{background:#eff6ff}
  .btn-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:6px}

  /* ===== Report ===== */
  #report{display:none}
  .rep-head{display:flex;gap:22px;align-items:stretch;flex-wrap:wrap;margin-bottom:6px}
  .radar-box{flex:none;display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,#f8fafc,#eef4ff);border:1px solid var(--line);border-radius:16px;padding:10px}
  .radar-svg{width:260px;max-width:100%;height:auto;display:block}
  .radar-poly{stroke-dasharray:1500;stroke-dashoffset:1500;animation:drawLine 1.5s ease .25s forwards}
  @keyframes drawLine{to{stroke-dashoffset:0}}

  .idx-card{flex:1;min-width:240px;display:flex;flex-direction:column;justify-content:center;
    background:linear-gradient(135deg,#6d28d9 0%,#2563eb 60%,#06b6d4 100%);color:#fff;border-radius:16px;padding:18px 22px;position:relative;overflow:hidden}
  .idx-card:before{content:"";position:absolute;right:-30px;top:-30px;width:120px;height:120px;border-radius:50%;
    background:radial-gradient(circle,rgba(125,211,252,.4),transparent 70%)}
  .idx-label{font-size:13px;opacity:.85;letter-spacing:1px}
  .idx-num{font-size:clamp(40px,12vw,56px);font-weight:800;line-height:1.05;display:flex;align-items:baseline;gap:4px}
  .idx-num .pct{font-size:18px;font-weight:600;opacity:.8}
  .idx-tag{display:inline-block;margin-top:6px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);
    padding:4px 12px;border-radius:999px;font-size:13px;font-weight:700;align-self:flex-start}

  .diag{background:linear-gradient(120deg,#eef2ff 0%,#fdf4ff 100%);border:1px solid #c4b5fd;
    border-radius:14px;padding:18px 20px 18px 22px;margin:14px 0 20px;font-size:15px;
    position:relative;overflow:hidden;box-shadow:0 6px 20px rgba(124,58,237,.10)}
  .diag:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--grad-brand)}
  .diag b{color:var(--violet)}
  .pill{display:inline-flex;align-items:center;gap:5px;background:var(--grad-brand);color:#fff;font-size:12px;font-weight:700;
    padding:4px 11px;border-radius:999px;margin:2px 5px 2px 0}
  .pill.alt{background:#fff;color:var(--violet);border:1px solid #c4b5fd}

  h3.block{font-size:17px;font-weight:800;margin:24px 0 12px;padding-left:12px;color:var(--violet);
    border-left:4px solid transparent;border-image:var(--grad-brand) 1;
    display:flex;align-items:center;gap:8px}
  h3.block .ico{width:21px;height:21px;color:var(--violet);margin-left:-4px}
  h4.sub{font-size:15px;font-weight:800;color:var(--violet);margin:14px 0 6px;display:flex;align-items:center;gap:7px}
  h4.sub .ico{width:18px;height:18px;color:var(--blue-l)}
  ul.clean{list-style:none;margin:6px 0 6px}
  ul.clean li{position:relative;padding-left:22px;margin:7px 0;font-size:14.5px}
  ul.clean li:before{content:"";position:absolute;left:2px;top:10px;width:8px;height:8px;border-radius:2px;background:var(--grad-brand);transform:rotate(45deg)}
  ul.clean li.warn:before{background:var(--red)}
  ul.clean li.good:before{background:var(--green)}

  .twocol{display:grid;grid-template-columns:1fr 1fr;gap:16px}
  .mini{background:#f8fafc;border:1px solid var(--line);border-radius:13px;padding:15px 17px}
  .mini .t{font-weight:800;color:var(--blue-d);font-size:14.5px;margin-bottom:6px;display:flex;align-items:center;gap:9px;flex-wrap:wrap}
  .dbadge{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:9px;
    color:#fff;background:var(--c);flex:none;box-shadow:0 3px 8px rgba(0,0,0,.12)}
  .dbadge .ico{width:17px;height:17px;color:#fff}

  .tool{border:1px solid var(--line);border-radius:13px;padding:14px 16px;margin:10px 0;background:#fff;position:relative;overflow:hidden}
  .tool:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad-brand)}
  .tool .name{font-weight:800;color:var(--blue-d);font-size:15px;margin-bottom:6px;display:flex;align-items:center;gap:8px}
  .tool .name .ico{width:18px;height:18px;color:var(--indigo)}
  .tool .step{font-size:14px;margin:5px 0 5px 26px;position:relative;counter-increment:s}
  .tool .step:before{content:counter(s);position:absolute;left:-26px;top:1px;width:18px;height:18px;border-radius:50%;
    background:var(--blue);color:#fff;font-size:11px;font-weight:800;display:flex;align-items:center;justify-content:center}
  .tool{counter-reset:s}

  .tbl-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:8px 0}
  table.plan{width:100%;border-collapse:collapse;font-size:14px;min-width:440px}
  table.plan th,table.plan td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
  table.plan th{background:linear-gradient(135deg,var(--blue),var(--blue-l));color:#fff;font-weight:700}
  table.plan tr:nth-child(even) td{background:#f8fafc}
  .wk{background:#eff6ff!important;font-weight:800;color:var(--blue-d);white-space:nowrap}

  /* score bars */
  .bars{margin:6px 0}
  .bar-row{display:flex;align-items:center;gap:11px;margin:11px 0}
  .bar-name{flex:none;width:92px;font-weight:600;font-size:14px}
  .bar-track{flex:1;height:11px;background:#eef2f7;border-radius:999px;overflow:hidden}
  .bar-fill{display:block;height:100%;width:0;border-radius:999px;transition:width 1.15s cubic-bezier(.2,.7,.3,1)}
  .bar-val{flex:none;width:38px;text-align:right;font-weight:800;color:var(--sub)}

  /* growth curve */
  .curve-wrap{margin:14px 0 4px;background:linear-gradient(135deg,#f8fafc,#eef4ff);border:1px solid var(--line);border-radius:16px;padding:16px 18px}
  .curve-head{font-weight:800;color:var(--blue-d);font-size:14.5px;display:flex;align-items:center;gap:8px;margin-bottom:6px;flex-wrap:wrap}
  .curve-head .ico{width:18px;height:18px;color:var(--blue)}
  .curve-note{font-weight:400;color:var(--muted);font-size:12px}
  .curve-legend{display:flex;gap:18px;flex-wrap:wrap;margin:2px 0 8px;font-size:11.5px;color:var(--slate)}
  .curve-legend i{display:inline-block;width:18px;height:0;border-top:3px solid #1d4ed8;vertical-align:middle;margin-right:7px;border-radius:2px}
  .curve-legend i.dash{border-top:3px dashed #94a3b8}
  .curve{width:100%;height:auto;display:block;overflow:visible}
  .curve-grid{stroke:#e6edf6;stroke-width:1}
  .curve-axis{stroke:#cbd5e1;stroke-width:1.3}
  .curve-ylab{fill:#9aa7b8;font-size:10px;font-weight:600}
  .curve-xlab{fill:#5b6b7e;font-size:11px;font-weight:700}
  .curve-area{opacity:.92}
  .curve-line{stroke-dasharray:1;stroke-dashoffset:1;animation:draw1 1.9s cubic-bezier(.4,.8,.3,1) .35s forwards}
  .curve-base{stroke-dasharray:5 5;opacity:0;animation:fadeSoft .6s ease .9s forwards}
  .curve-dot{opacity:0;animation:fadeSoft .4s ease forwards}
  .curve-vlab{fill:#1e40af;font-size:11px;font-weight:800;opacity:0;animation:fadeSoft .5s ease forwards}
  .curve-delta{fill:#047857;font-size:12px;font-weight:800;opacity:0;animation:fadeSoft .5s ease 1.9s forwards}
  @keyframes draw1{to{stroke-dashoffset:0}}
  @keyframes fadeSoft{to{opacity:1}}

  .foot{color:var(--muted);font-size:12.5px;text-align:center;margin-top:30px;line-height:1.9}
  .foot b{color:var(--sub)}
  .pro-note{border:1px dashed var(--gold);background:#fffbeb;border-radius:13px;padding:15px 17px;
    font-size:13.5px;color:#78350f;margin-top:18px}
  .pro-note b{color:var(--gold)}

  /* reveal animation */
  .reveal{opacity:0;animation:fadeUp .65s cubic-bezier(.2,.7,.3,1) forwards}
  @keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}

  @media(max-width:640px){
    .twocol{grid-template-columns:1fr}
    .slider-row{flex-wrap:wrap;gap:8px}
    .slider-row .name{width:100%}
    .slider-row input[type=range]{width:100%}
    .slider-row .val{width:100%;text-align:left;order:3}
    .rep-head{gap:14px}
    .opts{grid-template-columns:repeat(auto-fill,minmax(120px,1fr))}
  }
  @media (prefers-reduced-motion: reduce){
    *{animation:none!important;transition:none!important}
    .reveal{opacity:1!important;transform:none!important}
    .radar-poly,.curve-line{stroke-dashoffset:0!important}
  }
  @media print{
    header.hero,.card.intake,.btn-row{display:none!important}
    body{background:#fff}.wrap{max-width:100%}
    .card{box-shadow:none;border:none;padding:0}
    #report{display:block!important}
    .reveal{opacity:1!important;transform:none!important}
    .bar-fill{width:var(--w)}
  }

  /* ===== AI 决策教练对话 ===== */
  #coachCard{background:linear-gradient(135deg,#0b1220 0%,#111c34 100%);color:#e8eefc;border:none}
  #coachCard .sec-h{color:#fff}
  #coachCard .sec-h .n{background:linear-gradient(135deg,#a855f7,#22d3ee)}
  #coachCard .hint{color:#aab6d4}
  .chat-top{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
  .model-sel{background:rgba(255,255,255,.08);color:#e8eefc;border:1px solid rgba(255,255,255,.2);border-radius:9px;padding:7px 10px;font-size:13px;font-family:inherit;max-width:60%}
  .chat-box{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);border-radius:14px;padding:14px;height:300px;overflow-y:auto;display:flex;flex-direction:column;gap:12px}
  .msg{max-width:88%;padding:10px 13px;border-radius:14px;font-size:14px;line-height:1.7;word-break:break-word}
  .msg.ai{align-self:flex-start;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);color:#eaf0ff;border-bottom-left-radius:4px}
  .msg.user{align-self:flex-end;background:linear-gradient(135deg,#7c3aed,#2563eb);color:#fff;border-bottom-right-radius:4px}
  .msg .li{padding-left:14px;position:relative;margin:2px 0}
  .msg .li:before{content:"•";position:absolute;left:2px;color:#9db4ff}
  .msg b{color:#ffd28a}
  .msg .err{color:#ff9a9a}
  .dots{display:inline-flex;gap:4px;align-items:center}
  .dots i{width:6px;height:6px;border-radius:50%;background:#9db4ff;animation:blink 1.2s infinite}
  .dots i:nth-child(2){animation-delay:.2s}.dots i:nth-child(3){animation-delay:.4s}
  @keyframes blink{0%,60%,100%{opacity:.3}30%{opacity:1}}
  .chat-input{display:flex;gap:10px;margin-top:12px;align-items:flex-end}
  .chat-input textarea{flex:1;min-height:46px;max-height:120px;background:rgba(255,255,255,.08);color:#e8eefc;border:1px solid rgba(255,255,255,.2);border-radius:11px;padding:11px 13px;resize:none;font-family:inherit;font-size:14px}
  .chat-input textarea::placeholder{color:#8a97b8}
  .chat-input textarea:focus{border-color:#7c3aed;box-shadow:0 0 0 3px rgba(124,58,237,.25)}
  #coachCard .btn{background:linear-gradient(135deg,#a855f7,#2563eb);box-shadow:none;padding:11px 18px;font-size:14px}
  #coachCard .btn.ghost{background:rgba(255,255,255,.06);color:#cdd8f5;border:1px solid rgba(255,255,255,.2)}
  .btn.small{padding:7px 12px;font-size:12.5px}
  .chat-disclaimer{font-size:11.5px;color:#8a97b8;margin-top:10px;line-height:1.6}
  @media(max-width:640px){
    .chat-input{flex-wrap:wrap}
    .chat-input textarea{width:100%}
    .chat-input .btn{flex:1}
    .model-sel{max-width:100%}
  }

  /* ===== 内容区 / 持久化 ===== */
  .domain-teaser{display:flex;align-items:flex-start;gap:10px;padding:11px 0;border-bottom:1px dashed var(--line)}
  .domain-teaser:last-child{border-bottom:none}
  .domain-teaser .dbadge{margin-top:2px;flex:none}
  .domain-teaser .dt-name{font-weight:800;font-size:14.5px;display:flex;align-items:center;gap:8px}
  .domain-teaser .dt-sum{font-size:13px;color:var(--sub);margin-top:3px;line-height:1.6}
  .hist-toggle{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--blue);cursor:pointer;margin:2px 8px 12px 0}
  .hist-panel{display:none;border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:14px;background:#fbfdff}
  .hist-panel.show{display:block}
  .hist-row{display:flex;align-items:center;gap:10px;padding:9px 0;border-bottom:1px dashed var(--line);font-size:13px}
  .hist-row:last-child{border-bottom:none}
  .hist-row .h-idx{font-weight:800;color:var(--blue);min-width:42px}
  .hist-row .h-main{flex:1}
  .hist-row .h-meta{color:var(--sub);font-size:12px;margin-top:2px}
  .hist-empty{font-size:13px;color:var(--muted);padding:6px 0}
  .locked-note{font-size:12.5px;color:var(--violet);background:#f5f3ff;border:1px solid #ddd6fe;border-radius:10px;padding:10px 13px;margin-top:10px;display:flex;align-items:center;gap:8px;line-height:1.6}