:root{
  --brand:#6d28d9; --brand-2:#8b5cf6; --brand-soft:#f3e8ff;
  --bg:#f5f6fa; --card:#fff; --text:#1f2330; --muted:#6b7280;
  --line:#e8e9f0; --ok:#10b981; --warn:#f59e0b; --err:#ef4444;
  --radius:14px; --shadow:0 6px 24px rgba(30,25,70,.08);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:14px;line-height:1.6;
  display:flex;flex-direction:column;min-height:100vh}
a{color:var(--brand);text-decoration:none}

.ac-header{background:linear-gradient(120deg,#6d28d9,#8b5cf6 60%,#a78bfa);
  color:#fff;padding:14px 28px;display:flex;align-items:center;justify-content:space-between;
  box-shadow:0 2px 12px rgba(80,40,160,.25)}
.ac-brand{font-size:17px;font-weight:700;letter-spacing:.5px}
.ac-header a{color:#fff;opacity:.9;font-size:13px;margin-left:16px;white-space:nowrap}
.ac-nav a{margin-left:0}

/* 顶栏右侧：当前用户 + 退出登录（登录后一眼可见，不用往充值卡片里翻） */
.ac-nav{display:flex;align-items:center;gap:12px;flex-wrap:nowrap;min-width:0}
.ac-user{color:#fff;font-size:13px;opacity:.95;max-width:220px;overflow:hidden;
  text-overflow:ellipsis;white-space:nowrap}
.ac-user b{font-weight:600}
.ac-logout{border:1px solid rgba(255,255,255,.45);background:rgba(255,255,255,.12);
  color:#fff;font-size:12.5px;padding:5px 12px;border-radius:14px;cursor:pointer;
  font-family:inherit;transition:.2s;white-space:nowrap;flex:0 0 auto}
.ac-logout:hover{background:rgba(255,255,255,.26);border-color:rgba(255,255,255,.7)}
.ac-logout[hidden]{display:none}

/* 窄屏（手机）：顶栏元素挤在一行，品牌名与链接都不能换行 */
@media (max-width:640px){
  .ac-header{padding:12px 16px;gap:10px}
  .ac-brand{font-size:15px;white-space:nowrap;flex:0 1 auto;
    overflow:hidden;text-overflow:ellipsis}
  .ac-nav{gap:8px}
  .ac-header a{margin-left:0;font-size:12.5px;white-space:nowrap}
  .ac-user{max-width:88px;font-size:12px}
  .ac-logout{font-size:12px;padding:5px 10px}
}

.ac-wrap{width:100%;max-width:1080px;margin:0 auto;padding:28px 20px 60px}

/* ── 登录/注册 ── */
.ac-auth{display:grid;grid-template-columns:1.05fr .95fr;gap:28px;align-items:stretch;margin-top:16px}
@media (max-width:860px){.ac-auth{grid-template-columns:1fr}}
.ac-hero{background:linear-gradient(150deg,#5b21b6,#7c3aed 55%,#a78bfa);
  border-radius:20px;color:#fff;padding:36px 32px;display:flex;flex-direction:column;justify-content:center;
  box-shadow:0 16px 40px rgba(91,33,182,.28)}
.ac-hero h1{margin:0 0 12px;font-size:26px;line-height:1.35;font-weight:700}
.ac-hero p{margin:6px 0;opacity:.92;font-size:13.5px}
.ac-hero ul{margin:18px 0 0;padding-left:18px;font-size:13px;opacity:.95}
.ac-hero li{margin:6px 0}

.ac-auth-card{background:var(--card);border-radius:20px;padding:30px 28px;box-shadow:var(--shadow)}
.ac-tabs{display:flex;gap:6px;background:#f1f0f7;border-radius:10px;padding:4px;margin-bottom:20px}
.ac-tabs button{flex:1;border:0;background:transparent;padding:9px 0;border-radius:8px;
  font-size:14px;font-weight:600;color:var(--muted);cursor:pointer;transition:.2s}
.ac-tabs button.on{background:#fff;color:var(--brand);box-shadow:0 2px 8px rgba(0,0,0,.07)}

.field{margin-bottom:14px}
.field label{display:block;font-size:12.5px;color:var(--muted);margin-bottom:6px;font-weight:600}
.field input{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;
  font-size:14px;transition:.2s;background:#fbfbfe}
.field input:focus{outline:none;border-color:var(--brand-2);background:#fff;
  box-shadow:0 0 0 3px rgba(139,92,246,.14)}
.field .tip{font-size:11.5px;color:#9aa0ae;margin-top:5px}

.btn{width:100%;border:0;border-radius:10px;padding:12px 16px;font-size:14.5px;
  font-weight:600;cursor:pointer;transition:.2s}
.btn-primary{background:linear-gradient(120deg,#6d28d9,#8b5cf6);color:#fff;
  box-shadow:0 6px 16px rgba(109,40,217,.28)}
.btn-primary:hover{filter:brightness(1.06)}
.btn-primary:disabled{opacity:.55;cursor:not-allowed;box-shadow:none}
.btn-ghost{background:#fff;border:1px solid var(--line);color:var(--text)}
.msg{margin-top:12px;font-size:13px;padding:9px 12px;border-radius:9px;display:none}
.msg.on{display:block}
.msg.err{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}
.msg.ok{background:#ecfdf5;color:#047857;border:1px solid #a7f3d0}

/* ── 概览 ── */
.ac-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:20px}
@media (max-width:860px){.ac-cards{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--card);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}
.stat .k{font-size:12.5px;color:var(--muted);font-weight:600}
.stat .v{font-size:28px;font-weight:700;margin-top:4px;letter-spacing:-.5px}
.stat .u{font-size:13px;font-weight:500;color:var(--muted);margin-left:3px}
.stat.balance{background:linear-gradient(135deg,#6d28d9,#8b5cf6);color:#fff}
.stat.balance .k{color:rgba(255,255,255,.82)}
.stat.balance .u{color:rgba(255,255,255,.8)}

.ac-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:16px;margin-bottom:20px}
@media (max-width:860px){.ac-grid{grid-template-columns:1fr}}
.card{background:var(--card);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.card h3{margin:0 0 4px;font-size:15.5px}
.card .sub{color:var(--muted);font-size:12.5px;margin-bottom:14px}

.chips{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}
.chips button{border:1px solid var(--line);background:#fff;border-radius:999px;
  padding:7px 16px;font-size:13px;cursor:pointer;color:var(--muted);transition:.2s}
.chips button.on,.chips button:hover{border-color:var(--brand-2);color:var(--brand);background:var(--brand-soft)}

.buy-row{display:flex;gap:10px;align-items:center}
.buy-row input{flex:1;padding:11px 13px;border:1px solid var(--line);border-radius:10px;font-size:15px}
.total{display:flex;align-items:baseline;justify-content:space-between;
  margin:14px 0;padding:12px 14px;background:#faf9ff;border-radius:10px;border:1px dashed #ddd6fe}
.total b{font-size:22px;color:var(--brand)}
.notice{font-size:12.5px;border-radius:9px;padding:10px 12px;margin-top:12px;display:none}
.notice.on{display:block}
.notice.warn{background:#fffbeb;border:1px solid #fde68a;color:#92400e}
.notice.err{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c}
.qrbox{margin-top:16px;text-align:center;display:none}
.qrbox.on{display:block}
.qrbox img{width:200px;height:200px;border:1px solid var(--line);border-radius:10px;background:#fff;padding:6px}
.qrbox p{font-size:12px;color:var(--muted);margin:8px 0 0}

/* ── 微信扫码登录（未配置时按钮置灰，不藏起来，免得用户以为没这功能） ── */
.wx-sep{display:flex;align-items:center;gap:10px;margin:16px 0 12px;
  color:#9aa0ae;font-size:12px}
.wx-sep:before,.wx-sep:after{content:"";flex:1;height:1px;background:var(--line)}
.btn-wechat{background:#07c160;color:#fff}
.btn-wechat:hover{filter:brightness(1.05)}
.btn-wechat:disabled{background:#eaf6ef;color:#8aa89a;cursor:not-allowed;box-shadow:none}
.wx-hint{display:none;font-size:12px;color:var(--muted);margin-top:8px;text-align:center;line-height:1.5}
.wx-hint.on{display:block}
.wx-qrbox img{width:190px;height:190px}
.wx-qrbox .wx-count{color:#b45309}
.wx-qrbox .btn{width:auto;margin:10px auto 0;padding:8px 18px;font-size:13px}

/* ── 表格 ── */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:14px}
.tabs button{border:0;background:transparent;padding:10px 16px;font-size:13.5px;font-weight:600;
  color:var(--muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px}
.tabs button.on{color:var(--brand);border-bottom-color:var(--brand)}
table{width:100%;border-collapse:collapse;font-size:13px}
th{text-align:left;color:var(--muted);font-weight:600;font-size:12px;
  padding:9px 10px;background:#fafafd;border-bottom:1px solid var(--line)}
td{padding:10px;border-bottom:1px solid #f2f2f7}
tr:last-child td{border-bottom:0}
.amount-pos{color:var(--ok);font-weight:600}
.amount-neg{color:var(--err);font-weight:600}
.tag{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11.5px;font-weight:600}
.tag.paid{background:#ecfdf5;color:#047857}
.tag.pending{background:#fffbeb;color:#92400e}
.tag.failed,.tag.closed{background:#f3f4f6;color:#6b7280}
.tag.web{background:#eef2ff;color:#4338ca}
.tag.extension{background:#f3e8ff;color:#6d28d9}
.empty{text-align:center;color:#9aa0ae;padding:26px 0;font-size:13px}

/* hidden 属性优先级：避免被 display:grid/flex 覆盖 */
[hidden]{display:none !important}

/* ══════════ 阅卷记录 ══════════ */
.rec-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}
.rec-filters{display:flex;align-items:center;gap:10px;flex-wrap:wrap;min-width:0}
.rec-filters select{padding:8px 12px;border:1px solid var(--line);border-radius:9px;
  background:#fff;font-size:13px;color:var(--text);cursor:pointer;max-width:190px}
.rec-filters input{padding:8px 12px;border:1px solid var(--line);border-radius:9px;
  background:#fff;font-size:13px;color:var(--text);width:140px}
.rec-filters input::placeholder{color:#a1a1b5}
.rec-filters select:focus,.rec-filters input:focus{outline:none;border-color:var(--brand-2);
  box-shadow:0 0 0 3px rgba(139,92,246,.14)}
.rec-clear{border:0;background:transparent;color:var(--brand);font-size:12.5px;
  cursor:pointer;padding:4px 2px;text-decoration:underline;text-underline-offset:3px}
.rec-count{font-size:12.5px;color:var(--muted);margin:-4px 0 12px;line-height:1.6}
.rec-actions{display:flex;gap:8px}
.rec-actions .btn{width:auto;padding:8px 14px;font-size:13px;border-radius:9px}
.rec-actions .btn:hover{border-color:#ddd6fe;background:var(--brand-soft);color:var(--brand)}

.rec-list{display:flex;flex-direction:column;gap:10px}
.rec-item{display:grid;grid-template-columns:96px 1fr auto;gap:12px;padding:12px;
  border:1px solid var(--line);border-radius:12px;background:#fff;transition:.18s}
.rec-item:hover{border-color:#ddd6fe;box-shadow:0 4px 14px rgba(109,40,217,.08)}
.rec-thumb{width:96px;height:96px;border-radius:9px;overflow:hidden;background:#f7f7fb;
  border:1px solid #f0f0f6;display:flex;align-items:center;justify-content:center}
.rec-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.rec-thumb .ph{font-size:11px;color:#b8bcc8;text-align:center;line-height:1.5}
.rec-main{min-width:0}
.rec-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:5px}
.rec-score{font-size:19px;font-weight:800;color:var(--brand);letter-spacing:-.5px}
.rec-max{font-size:12px;color:var(--muted);margin-left:-4px}
.rec-rule{font-size:13px;font-weight:600}
.rec-meta{font-size:11.5px;color:#9aa0ae}
.rec-rate{margin-left:auto;font-size:11.5px;color:var(--muted);background:#f7f7fb;
  border-radius:6px;padding:1px 7px}
.rec-ans,.rec-why{font-size:12.5px;color:#374151;overflow:hidden;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.rec-why{color:#6b7280;margin-top:3px}
.rec-lab{display:inline-block;font-size:10.5px;font-weight:700;color:#7c3aed;
  background:var(--brand-soft);padding:0 5px;border-radius:4px;margin-right:5px}
.rec-open{width:auto;align-self:center;padding:7px 12px;font-size:12.5px;border-radius:9px;
  border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--brand);font-weight:600}
.rec-open:hover{background:var(--brand-soft);border-color:#ddd6fe}
.rec-more{text-align:center;margin-top:12px}
.rec-more .btn{width:auto;padding:9px 22px;font-size:13px}
@media (max-width:640px){
  .rec-item{grid-template-columns:64px 1fr;gap:10px}
  .rec-thumb{width:64px;height:64px}
  .rec-open{grid-column:2;justify-self:start;margin-top:2px}
  .rec-rate{margin-left:0}
}

/* ══════════ 记录详情弹窗 ══════════ */
.rec-modal{position:fixed;inset:0;z-index:90;display:flex;align-items:center;justify-content:center;padding:18px}
.rec-mask{position:absolute;inset:0;background:rgba(20,16,40,.55)}
.rec-dialog{position:relative;background:#fff;border-radius:16px;width:min(880px,100%);
  max-height:88vh;display:flex;flex-direction:column;box-shadow:0 24px 60px rgba(20,16,40,.35)}
.rec-dialog-head{display:flex;align-items:center;justify-content:space-between;
  padding:14px 18px;border-bottom:1px solid var(--line);flex:0 0 auto}
.rec-dialog-head .t{font-weight:700;font-size:15px}
.rec-head-actions{display:flex;align-items:center;gap:8px}
.rec-pdf{border:1px solid #ddd6fe;background:#f5f3ff;color:#6d28d9;font-size:12.5px;
  font-weight:600;padding:7px 12px;border-radius:9px;cursor:pointer}
.rec-pdf:hover{background:#ede9fe}
.rec-pdf:disabled{opacity:.6;cursor:default}
.rec-x{border:0;background:#f3f4f8;width:30px;height:30px;border-radius:9px;font-size:18px;
  line-height:1;cursor:pointer;color:#6b7280}
.rec-x:hover{background:#e9e9f2}
.rec-dialog-body{padding:16px 18px 20px;overflow:auto}
.rm-meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:12.5px;color:var(--muted);margin-bottom:14px}
.rm-meta b{color:var(--text)}
.rm-shot{margin:0 0 16px;text-align:center;background:#fafafd;border:1px solid var(--line);
  border-radius:10px;padding:10px}
.rm-shot img{max-width:100%;max-height:50vh;border-radius:6px;object-fit:contain;cursor:zoom-in}
.rm-shot .ph{padding:30px 10px;color:#9aa0ae;font-size:12.5px}
.rm-sec{margin-bottom:16px}
.rm-sec h4{margin:0 0 6px;font-size:12px;color:#6b7280;font-weight:700;
  letter-spacing:.4px;text-transform:uppercase}
.rm-text{font-size:13.5px;line-height:1.75;color:#1f2330;word-break:break-word}
.rm-text .katex-display{overflow-x:auto;margin:.4em 0}
.rm-tip{font-size:11.5px;color:#9aa0ae;margin-top:6px}