:root{
  --bg:#f2f8fd;
  --bg2:#e7f2fb;
  --card:#ffffff;
  --card2:#f7fcff;
  --line:#dce8f4;
  --txt:#1d2b3a;
  --txt2:#56697c;
  --txt3:#8a9aab;
  --acc:#2a8fd8;
  --acc2:#5aa9e6;
  --ok:#1ea97a;
  --warn:#d99a2b;
  --bad:#e05b6d;
  --radius:16px;
  font-synthesis-weight:none;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{
  background:
    radial-gradient(1100px 700px at 12% -10%, rgba(120,200,255,.34), transparent 60%),
    radial-gradient(900px 600px at 100% 0%, rgba(160,232,222,.26), transparent 55%),
    linear-gradient(180deg,#f9fcff,var(--bg) 45%,var(--bg2));
  color:var(--txt);
  font-family:"Microsoft YaHei UI","Microsoft YaHei","PingFang SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
}
button{font-family:inherit}
a{color:var(--acc)}

/* ---------------- topbar ---------------- */
.topbar{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:18px;
  padding:12px 26px;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  box-shadow:0 2px 14px rgba(70,120,170,.07);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;letter-spacing:.4px;white-space:nowrap}
.brand .bolt{
  width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--acc),var(--acc2));color:#fff;font-size:17px;
  box-shadow:0 6px 18px rgba(42,143,216,.28);
}
.brand small{display:block;font-weight:400;font-size:11px;color:var(--txt3);letter-spacing:0}
.nav{display:flex;gap:6px;margin-left:auto;flex-wrap:wrap}
.nav button{
  background:transparent;border:1px solid transparent;color:var(--txt2);
  padding:8px 14px;border-radius:10px;cursor:pointer;font-size:14px;transition:.18s;
}
.nav button:hover{background:#eaf4fd;color:var(--txt)}
.nav button.active{background:#e3f2fd;border-color:#b7dcf4;color:#17679f}
.user-chip{display:flex;align-items:center;gap:8px;margin-left:8px;padding-left:12px;border-left:1px solid var(--line);font-size:13px;color:var(--txt2);white-space:nowrap}
.auth-wrap{display:grid;grid-template-columns:minmax(0,420px) minmax(0,1fr);gap:16px;align-items:start;max-width:960px;margin:24px auto 0}
@media (max-width:900px){.auth-wrap{grid-template-columns:1fr}}

main{max-width:1180px;margin:0 auto;padding:26px 26px 70px}
.view{display:none;animation:fade .25s ease}
.view.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

h1{font-size:30px;margin:6px 0 8px;letter-spacing:.5px}
h2{font-size:19px;margin:0 0 14px}
h3{font-size:15px;margin:0 0 8px}
p{line-height:1.75;color:var(--txt2)}
.muted{color:var(--txt3);font-size:13px}

.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px 22px;box-shadow:0 10px 30px rgba(70,120,170,.09);
}
.card+.card{margin-top:16px}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){.g2,.g3,.g4{grid-template-columns:1fr}}

.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#eaf7ff,#f7fffc);
  border:1px solid #d7e9f7;border-radius:22px;padding:30px 32px;
  box-shadow:0 10px 30px rgba(70,120,170,.08);
}
.hero:after{
  content:"";position:absolute;right:-90px;top:-90px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(120,200,255,.28),transparent 65%);
}
.hero h1{font-size:34px}
.hero p{max-width:660px;color:#4d6377}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  border:1px solid var(--line);background:#f5faff;color:var(--txt);
  padding:11px 20px;border-radius:12px;cursor:pointer;font-size:15px;transition:.18s;
}
.btn:hover{background:#e9f4fe;transform:translateY(-1px)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn.primary{
  background:linear-gradient(135deg,var(--acc),var(--acc2));color:#fff;font-weight:700;border:none;
  box-shadow:0 10px 24px rgba(42,143,216,.25);
}
.btn.primary:hover{filter:brightness(1.06)}
.btn.ghost{background:transparent}
.btn.danger{background:#fff1f3;border-color:#f3c2c8;color:#c2455a}
.btn.rec{background:linear-gradient(135deg,#ff7d8f,#ffa46a);color:#fff;font-weight:700;border:none}
.btn.sm{padding:6px 12px;font-size:13px;border-radius:9px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

.stat{background:var(--card2);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.stat b{display:block;font-size:26px;letter-spacing:.5px}
.stat span{color:var(--txt3);font-size:12.5px}

.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  border:1px solid var(--line);background:#f7fbff;color:var(--txt2);
  padding:7px 14px;border-radius:999px;cursor:pointer;font-size:13.5px;transition:.16s;user-select:none;
}
.chip:hover{color:var(--txt)}
.chip.on{background:linear-gradient(135deg,#dbeeff,#e6f9f4);border-color:#9fd0ef;color:#17679f;font-weight:600}

label.field{display:block;margin-bottom:14px}
label.field>span{display:block;font-size:13px;color:var(--txt2);margin-bottom:7px}
select,input[type=text],input[type=number],textarea{
  width:100%;background:#fff;border:1px solid var(--line);color:var(--txt);
  border-radius:11px;padding:10px 12px;font-size:14px;font-family:inherit;outline:none;
}
select:focus,input:focus,textarea:focus{border-color:#8ec8ea;box-shadow:0 0 0 3px rgba(42,143,216,.10)}
textarea{resize:vertical;line-height:1.7}
.switch{display:flex;align-items:center;gap:10px;padding:9px 0;font-size:14px;color:var(--txt2);cursor:pointer}
.switch input{appearance:none;width:42px;height:23px;border-radius:99px;background:#dbe7f2;position:relative;cursor:pointer;transition:.2s;flex:none}
.switch input:checked{background:linear-gradient(135deg,var(--acc),var(--acc2))}
.switch input:after{content:"";position:absolute;width:17px;height:17px;border-radius:50%;background:#fff;top:3px;left:3px;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.15)}
.switch input:checked:after{left:22px}

/* ---------------- 面试间 ---------------- */
.room-top{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:16px}
.progress{flex:1;min-width:220px;height:8px;border-radius:99px;background:#e4eff8;overflow:hidden}
.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--acc),var(--acc2));width:0;transition:.4s}
.timer{font-variant-numeric:tabular-nums;font-size:15px;color:var(--txt2);border:1px solid var(--line);padding:6px 12px;border-radius:10px}
.timer.hot{color:#c2455a;border-color:#f0bcc4;background:#fff2f4}

.interviewer{display:flex;gap:18px;align-items:center}
.avatar{
  position:relative;width:78px;height:78px;border-radius:22px;flex:none;
  background:linear-gradient(135deg,#e8f4ff,#d8eefb);display:grid;place-items:center;
  border:1px solid #cfe3f4;font-size:34px;
}
.avatar.speaking{animation:pulse 1.5s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(42,143,216,.45)}70%{box-shadow:0 0 0 20px rgba(42,143,216,0)}100%{box-shadow:0 0 0 0 rgba(42,143,216,0)}}
.wave{display:flex;gap:3px;align-items:flex-end;height:26px}
.wave i{width:4px;background:linear-gradient(180deg,var(--acc),var(--acc2));border-radius:99px;height:8px;transition:height .12s}
.state-txt{font-size:13px;color:var(--acc);letter-spacing:.4px}
.question-box{
  margin-top:16px;background:linear-gradient(135deg,#f7fbff,#eef7ff);
  border:1px solid #dbe9f6;border-radius:16px;padding:22px 24px;
}
.question-box .q{font-size:20px;line-height:1.7;font-weight:600}
.tag{display:inline-block;font-size:12px;padding:3px 10px;border-radius:8px;background:#eef6fd;color:#4a7fa6;margin-right:6px}
.tag.cat{background:#e3f4fb;color:#1d7fa8}

.answer-area{margin-top:16px}
.meter{display:flex;gap:3px;height:34px;align-items:flex-end;margin:10px 0 6px}
.meter i{flex:1;background:linear-gradient(180deg,rgba(42,143,216,.85),rgba(90,169,230,.45));height:4px;border-radius:99px;transition:height .08s}
.live{min-height:120px;font-size:15px;line-height:1.8}
.hint{font-size:12.5px;color:var(--txt3)}

.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;padding:4px 9px;border-radius:8px;background:#eef4fa;color:var(--txt2)}
.badge.ok{background:#e6f8f0;color:#178a63}
.badge.warn{background:#fff7e3;color:#a8761b}
.badge.bad{background:#fff0f3;color:#c2455a}

/* ---------------- 报告 ---------------- */
.score-hero{display:flex;gap:26px;align-items:center;flex-wrap:wrap}
.score-ring{position:relative;width:150px;height:150px;flex:none}
.score-ring svg{transform:rotate(-90deg)}
.score-ring .val{position:absolute;inset:0;display:grid;place-items:center;flex-direction:column}
.score-ring .val b{font-size:38px;line-height:1}
.score-ring .val span{font-size:12px;color:var(--txt3);margin-top:4px}

.qcard{border:1px solid var(--line);border-radius:14px;background:var(--card2);padding:16px 18px;margin-bottom:12px}
.qcard header{display:flex;gap:10px;align-items:flex-start;justify-content:space-between}
.qcard .qt{font-size:15.5px;font-weight:600;line-height:1.6}
.qcard .score{font-size:20px;font-weight:700;font-variant-numeric:tabular-nums}
.kv{display:grid;grid-template-columns:76px 1fr;gap:6px 12px;font-size:13.5px;margin-top:10px}
.kv b{color:var(--txt3);font-weight:400}
.ul{margin:6px 0 0;padding-left:18px;font-size:13.5px;color:var(--txt2);line-height:1.8}
.ul li{margin-bottom:2px}
.ref{font-size:13px;color:var(--txt2);background:#f8fbfe;border:1px dashed var(--line);border-radius:10px;padding:10px 12px;line-height:1.8;margin-top:8px}
details summary{cursor:pointer;color:var(--acc);font-size:13px;margin-top:10px;outline:none}

.list-item{display:flex;gap:12px;align-items:flex-start;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--card2);margin-bottom:9px}
.list-item.owner{border-color:#a8d5ef;background:#f4fbff}
.list-item .qi{flex:1;font-size:14.5px;line-height:1.6}
.drop{
  border:2px dashed #b9d7ee;border-radius:16px;padding:34px;text-align:center;
  background:#f8fcff;cursor:pointer;transition:.2s;
}
.drop:hover,.drop.over{background:#eef8ff;border-color:#8ec8ea}
.toast{
  position:fixed;left:50%;bottom:32px;transform:translateX(-50%) translateY(20px);
  background:rgba(255,255,255,.98);border:1px solid #cfe2f2;color:var(--txt);
  padding:12px 20px;border-radius:12px;font-size:14px;opacity:0;pointer-events:none;transition:.25s;z-index:200;
  box-shadow:0 12px 34px rgba(70,120,170,.18);max-width:80vw;
}
.notice{
  margin-top:16px;padding:14px 18px;border-radius:14px;font-size:14px;line-height:1.7;
  background:#fff9e9;border:1px solid #f2d491;color:#8a6415;
}
.modal{
  position:fixed;inset:0;background:rgba(30,50,70,.35);backdrop-filter:blur(3px);
  display:none;align-items:center;justify-content:center;z-index:300;padding:20px;
}
.modal.show{display:flex}
.modal-box{
  width:min(440px,100%);background:#fff;
  border:1px solid #dbe8f4;border-radius:18px;padding:24px 26px;
  box-shadow:0 24px 60px rgba(50,90,130,.20);
}
.toast.show{opacity:1;transform:translateX(-50%)}
.spinner{width:16px;height:16px;border:2px solid rgba(120,150,180,.28);border-top-color:var(--acc);border-radius:50%;display:inline-block;animation:spin .8s linear infinite;vertical-align:-2px}
@keyframes spin{to{transform:rotate(360deg)}}

@media print{
  body{background:#fff;color:#111}
  .topbar,.nav,.btn,.no-print{display:none!important}
  .card,.qcard{background:#fff;border-color:#ddd;box-shadow:none;color:#111}
  .muted,.kv b,p{color:#444}
  .view{display:none!important}
  #view-report{display:block!important}
}