:root{
  --ink:#14243a; --ink2:#23405f; --ink3:#1d3c63;
  --blue:#1657a8; --blue-d:#0f3f7c; --blue-l:#e7f0fc; --blue-b:#bcd4f0;
  --green:#0d7a52; --green-l:#e2f6ec; --green-b:#a9dfc6;
  --amber:#9a5b00; --amber-l:#fff2dc; --amber-b:#f0d3a0;
  --red:#b3261e; --red-l:#fdeceb; --red-b:#f0bfbb;
  --violet:#5b3aa8; --violet-l:#efeafc;
  --line:#cbd9ea; --bg:#eaf0f8; --card:#fff;
  --r:14px; --sh:0 6px 22px rgba(16,52,96,.10);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--ink);
  font-family:"Microsoft YaHei","PingFang SC","Segoe UI",system-ui,sans-serif;
  font-size:16px; line-height:1.7; -webkit-font-smoothing:antialiased;
}
a{color:var(--blue);text-decoration:none}
button{font-family:inherit}
input,select,textarea{font-family:inherit;font-size:16px;color:var(--ink)}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{overflow-x:clip;-webkit-tap-highlight-color:transparent}
button,a,label,.step,.opt,.tab,.stagetab,.drop,.delx{touch-action:manipulation}
.scroll{-webkit-overflow-scrolling:touch}

/* ---------- 顶栏 ---------- */
.top{
  position:sticky;top:0;z-index:50;
  background:linear-gradient(100deg,#0f3f7c,#1657a8 55%,#1f74c8);
  color:#fff;box-shadow:0 3px 14px rgba(10,40,80,.28);
}
.top .in{max-width:1180px;margin:0 auto;padding:14px 22px;display:flex;align-items:center;gap:16px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand .logo{
  width:42px;height:42px;border-radius:12px;flex:0 0 42px;object-fit:cover;
  box-shadow:0 2px 8px rgba(0,0,0,.22);background:#fff;
}
.hlogo{width:46px;height:46px;border-radius:13px;object-fit:cover;box-shadow:0 4px 14px rgba(0,0,0,.32);flex:0 0 46px}
.brand .t1{font-size:20px;font-weight:700;letter-spacing:.5px;line-height:1.25}
.brand .t2{font-size:14px;color:#d6e6fb;line-height:1.3}
.top .sp{flex:1}
.chip{
  display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.16);
  border:1px solid rgba(255,255,255,.42);color:#fff;border-radius:999px;padding:6px 14px;font-size:15px;
}
.chip b{font-weight:700}
.tbtn{
  background:#fff;color:var(--blue-d);border:0;border-radius:10px;padding:8px 16px;
  font-size:15px;font-weight:700;cursor:pointer;
}
.tbtn:hover{background:#e7f0fc}

.wrap{max-width:1180px;margin:0 auto;padding:26px 22px 60px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh)}
.pad{padding:22px}
.h2{font-size:22px;font-weight:700;color:var(--blue-d);margin:0 0 14px}
.h3{font-size:18px;font-weight:700;color:var(--ink);margin:0 0 12px}
.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.sp{flex:1}

/* ---------- 按钮 ---------- */
.btn{
  border:1px solid var(--blue-b);background:var(--blue-l);color:var(--blue-d);
  border-radius:10px;padding:9px 18px;font-size:15px;font-weight:700;cursor:pointer;
  display:inline-flex;align-items:center;gap:7px;white-space:nowrap;
}
.btn:hover{background:#d8e7fa;border-color:var(--blue)}
.btn.pri{background:var(--blue);border-color:var(--blue);color:#fff}
.btn.pri:hover{background:var(--blue-d)}
.btn.ok{background:var(--green-l);border-color:var(--green-b);color:var(--green)}
.btn.ok:hover{background:#cdefdd}
.btn.warn{background:var(--amber-l);border-color:var(--amber-b);color:var(--amber)}
.btn.dan{background:var(--red-l);border-color:var(--red-b);color:var(--red)}
.btn.gho{background:#fff}
.btn.sm{padding:6px 12px;font-size:14px;border-radius:9px}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.delx{
  width:26px;height:26px;padding:0;border-radius:50%;cursor:pointer;line-height:1;
  border:1px solid var(--red-b);background:var(--red-l);color:var(--red);
  font-size:14px;font-weight:800;display:inline-flex;align-items:center;justify-content:center;
}
.delx:hover{background:var(--red);border-color:var(--red);color:#fff}

/* ---------- 徽标 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;border-radius:999px;
  padding:4px 13px;font-size:14px;font-weight:700;border:1px solid transparent;white-space:nowrap;
}
.tag.blue{background:var(--blue-l);color:var(--blue-d);border-color:var(--blue-b)}
.tag.green{background:var(--green-l);color:var(--green);border-color:var(--green-b)}
.tag.amber{background:var(--amber-l);color:var(--amber);border-color:var(--amber-b)}
.tag.red{background:var(--red-l);color:var(--red);border-color:var(--red-b)}
.tag.violet{background:var(--violet-l);color:var(--violet);border-color:#d3c6f2}

/* ---------- 表单 ---------- */
.field{margin-bottom:16px}
.field label{display:block;font-size:15px;font-weight:700;color:var(--ink3);margin-bottom:7px}
.inp{
  width:100%;padding:11px 14px;border:1px solid var(--blue-b);border-radius:10px;
  background:#fbfdff;font-size:16px;color:var(--ink);outline:none;
}
.inp:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(22,87,168,.14);background:#fff}
select.inp{padding:10px 12px}
.check{display:flex;align-items:center;gap:10px;font-size:15px;color:var(--ink);cursor:pointer;font-weight:600}
.check input{width:19px;height:19px;accent-color:var(--blue)}

/* ---------- 提示条 ---------- */
.note{
  border-radius:12px;padding:13px 16px;font-size:15px;font-weight:600;line-height:1.6;
  border:1px solid var(--blue-b);background:var(--blue-l);color:var(--blue-d);margin-bottom:16px;
}
.note.ok{border-color:var(--green-b);background:var(--green-l);color:var(--green)}
.note.warn{border-color:var(--amber-b);background:var(--amber-l);color:var(--amber)}
.note.err{border-color:var(--red-b);background:var(--red-l);color:var(--red)}

/* ---------- 阶段进度条 ---------- */
.stepper{display:flex;gap:0;align-items:stretch;background:#fff;border:1px solid var(--line);
  border-radius:16px;overflow:hidden;box-shadow:var(--sh);margin-bottom:22px}
.step{
  flex:1;padding:16px 18px 14px;cursor:pointer;border:0;background:#fff;text-align:left;
  border-right:1px solid var(--line);position:relative;min-width:0;
}
.step:last-child{border-right:0}
.step .n{font-size:19px;font-weight:800;color:var(--ink3);letter-spacing:.5px}
.step .d{font-size:14px;color:var(--ink2);font-weight:600;margin-top:2px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.step .bar{height:9px;border-radius:6px;background:#dce8f6;margin-top:11px;overflow:hidden}
.step .bar i{display:block;height:100%;background:linear-gradient(90deg,#1f74c8,#0d7a52);width:0}
.step .num{font-size:14px;font-weight:700;color:var(--blue);margin-top:7px}
.step:hover{background:#f4f9ff}
.step.on{background:linear-gradient(160deg,#eaf3ff,#f7fbff)}
.step.on .n{color:var(--blue-d)}
.step.on:after{content:"";position:absolute;left:0;right:0;bottom:0;height:5px;
  background:linear-gradient(90deg,#1657a8,#1f9ad6)}
.step.done .n{color:var(--green)}
.step .ck{position:absolute;top:14px;right:16px;font-size:18px;color:var(--green);font-weight:800}

/* ---------- 学习列表 ---------- */
.item{
  display:flex;align-items:center;gap:16px;padding:16px 18px;border:1px solid var(--line);
  border-radius:var(--r);background:#fff;margin-bottom:12px;box-shadow:0 3px 12px rgba(16,52,96,.06);
}
.item.done{border-color:var(--green-b);background:linear-gradient(180deg,#fbfffd,#f2fbf6)}
.item.lock{border-color:#e3e9f2;background:#f7fafd}
.item .no{
  width:44px;height:44px;flex:0 0 44px;border-radius:12px;background:var(--blue-l);
  color:var(--blue-d);font-size:19px;font-weight:800;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--blue-b);
}
.item.done .no{background:var(--green-l);color:var(--green);border-color:var(--green-b)}
.item.lock .no{background:#edf2f8;color:#6b819c;border-color:#dfe7f1}
.item .mid{flex:1;min-width:0}
.item .nm{font-size:17px;font-weight:700;color:var(--ink);word-break:break-all}
.item .mt{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:8px}
.item .act{display:flex;gap:9px;align-items:center;flex-wrap:wrap;justify-content:flex-end}

/* ---------- 阅读器 ---------- */
.rdr{display:flex;flex-direction:column;min-height:100vh;background:#dfe7f2}
.rdr .bar{
  background:linear-gradient(100deg,#0f3f7c,#1657a8);color:#fff;padding:11px 18px;
  display:flex;align-items:center;gap:14px;position:sticky;top:0;z-index:20;
  box-shadow:0 3px 12px rgba(10,40,80,.26);flex-wrap:wrap;
}
.rdr .bar .tt{font-size:17px;font-weight:700;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rdr .bar .pg{font-size:15px;font-weight:700;background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.4);border-radius:999px;padding:5px 14px;white-space:nowrap}
.rdr .bar .btn{background:#fff;border-color:#fff;color:var(--blue-d)}
.rdr .bar .btn:hover{background:#e2edfb}
.rdr .bar .btn.ghost{background:rgba(255,255,255,.16);color:#fff;border-color:rgba(255,255,255,.5)}
.rdr .bar .btn.ghost:hover{background:rgba(255,255,255,.3)}
.paperwrap{flex:1;overflow:auto;padding:26px 16px 8px;display:flex;justify-content:center}
.paper{
  background:#fff;width:100%;max-width:900px;min-height:1100px;border-radius:6px;
  box-shadow:0 10px 34px rgba(10,40,80,.20);padding:64px 70px;position:relative;
}
.paper .pt{
  border-bottom:2px solid var(--blue-l);padding-bottom:14px;margin-bottom:24px;
  font-size:19px;font-weight:800;color:var(--blue-d);text-align:center;letter-spacing:1px;
}
.doc{font-size:var(--fs,18px);line-height:1.95;color:#1b2a3d}
.doc h1{font-size:1.42em;color:var(--blue-d);margin:.9em 0 .5em;text-align:center;letter-spacing:1px}
.doc h2{font-size:1.2em;color:#0f3f7c;margin:1.1em 0 .45em;padding-left:11px;border-left:5px solid var(--blue)}
.doc h3{font-size:1.07em;color:#1d3c63;margin:1em 0 .4em}
.doc h4{font-size:1em;color:#23405f;margin:.9em 0 .35em}
.doc p{margin:.62em 0;text-indent:2em;text-align:justify}
.doc li{margin:.4em 0 .4em 1.4em;list-style:disc}
.doc table{border-collapse:collapse;width:100%;margin:16px 0;font-size:.92em}
.doc th,.doc td{border:1px solid #b9cde4;padding:8px 10px;text-align:left;vertical-align:top}
.doc th{background:var(--blue-l);color:var(--blue-d);font-weight:700}
.doc tr:nth-child(even) td{background:#f8fbff}
.doc img{max-width:100%;border-radius:6px;margin:10px 0}
.doc .pbmark{border-top:2px dashed var(--blue-b);margin:26px 0;text-align:center;color:var(--blue);font-size:14px;font-weight:700}
.rdr .foot{
  position:sticky;bottom:0;background:#fff;border-top:1px solid var(--line);
  padding:12px 18px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  box-shadow:0 -4px 16px rgba(10,40,80,.10);
}
.rdr .track{flex:1;min-width:160px;height:11px;background:#dce8f6;border-radius:7px;overflow:hidden}
.rdr .track i{display:block;height:100%;background:linear-gradient(90deg,#1f74c8,#0d7a52);width:0;transition:width .25s}
.pgnum{font-size:15px;font-weight:700;color:var(--blue-d);white-space:nowrap}
.pgnum input{width:62px;padding:6px 8px;border:1px solid var(--blue-b);border-radius:8px;text-align:center;font-size:16px}
.pdfbox{width:100%;height:calc(100vh - 190px);min-height:600px;border:0;background:#fff}
.pdfhint{display:none}

/* ---------- 测验 ---------- */
.qcard{border:1px solid var(--line);border-radius:var(--r);background:#fff;padding:20px 22px;margin-bottom:16px;box-shadow:var(--sh)}
.qcard .qh{display:flex;gap:12px;align-items:flex-start}
.qcard .qn{
  flex:0 0 34px;height:34px;border-radius:10px;background:var(--blue);color:#fff;font-weight:800;
  display:flex;align-items:center;justify-content:center;font-size:16px;
}
.qcard .qt{font-size:17px;font-weight:700;color:var(--ink);line-height:1.7;padding-top:3px}
.opt{
  display:flex;gap:12px;align-items:flex-start;padding:12px 15px;margin-top:11px;
  border:2px solid var(--line);border-radius:12px;cursor:pointer;background:#fcfdff;
}
.opt:hover{border-color:var(--blue-b);background:var(--blue-l)}
.opt .k{
  flex:0 0 30px;height:30px;border-radius:50%;background:#e7eef8;color:var(--ink3);
  font-weight:800;display:flex;align-items:center;justify-content:center;font-size:15px;
}
.opt .v{font-size:16px;color:var(--ink);line-height:1.6;padding-top:2px}
.opt.on{border-color:var(--blue);background:var(--blue-l)}
.opt.on .k{background:var(--blue);color:#fff}
.opt.right{border-color:var(--green);background:var(--green-l)}
.opt.right .k{background:var(--green);color:#fff}
.opt.wrong{border-color:var(--red);background:var(--red-l)}
.opt.wrong .k{background:var(--red);color:#fff}
.exp{margin-top:13px;border-radius:11px;padding:12px 15px;font-size:15px;line-height:1.65;
  border:1px solid var(--blue-b);background:var(--blue-l);color:var(--blue-d)}
.exp.bad{border-color:var(--red-b);background:var(--red-l);color:var(--red)}
.score{
  text-align:center;padding:26px;border-radius:var(--r);border:1px solid var(--green-b);
  background:linear-gradient(180deg,#fbfffd,#eefaf4);margin-bottom:20px;
}
.score.bad{border-color:var(--amber-b);background:linear-gradient(180deg,#fffcf6,#fff5e4)}
.score .big{font-size:46px;font-weight:800;color:var(--green);line-height:1.1}
.score.bad .big{color:var(--amber)}
.score .lb{font-size:17px;font-weight:700;color:var(--ink2);margin-top:6px}

/* ---------- 管理台 ---------- */
.tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:20px}
.tab{
  border:1px solid var(--blue-b);background:#fff;color:var(--blue-d);border-radius:11px;
  padding:10px 20px;font-size:16px;font-weight:700;cursor:pointer;
}
.tab.on{background:var(--blue);border-color:var(--blue);color:#fff}
table.grid{width:100%;border-collapse:collapse;font-size:15px}
table.grid th{
  background:var(--blue-l);color:var(--blue-d);font-weight:700;text-align:left;
  padding:11px 12px;border:1px solid var(--blue-b);white-space:nowrap;
}
table.grid td{padding:10px 12px;border:1px solid var(--line);color:var(--ink);vertical-align:middle}
table.grid tr:nth-child(even) td{background:#f8fbff}
table.grid td.c,table.grid th.c{text-align:center}
.scroll{overflow:auto;border-radius:12px;border:1px solid var(--line)}
.drop{
  border:2px dashed var(--blue-b);border-radius:14px;background:#f7fbff;padding:26px;text-align:center;
  cursor:pointer;
}
.drop.on{border-color:var(--blue);background:var(--blue-l)}
.drop .big{font-size:19px;font-weight:800;color:var(--blue-d)}
.drop .sm{font-size:15px;color:var(--ink2);font-weight:600;margin-top:6px}
.stagetabs{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap}
.stagetab{
  border:1px solid var(--line);background:#fff;border-radius:12px;padding:12px 18px;cursor:pointer;min-width:190px;
}
.stagetab .n{font-size:17px;font-weight:800;color:var(--ink3)}
.stagetab .d{font-size:14px;color:var(--ink2);font-weight:600}
.stagetab.on{border-color:var(--blue);background:var(--blue-l);box-shadow:0 0 0 3px rgba(22,87,168,.10)}
.stagetab.on .n{color:var(--blue-d)}
.dl{display:flex;gap:12px;align-items:center;padding:12px 14px;border:1px solid var(--line);
  border-radius:12px;background:#fff;margin-bottom:10px}
.dl .idx{width:34px;height:34px;flex:0 0 34px;border-radius:9px;background:var(--blue-l);color:var(--blue-d);
  font-weight:800;display:flex;align-items:center;justify-content:center}
.dl .nm{font-size:16px;font-weight:700;color:var(--ink);word-break:break-all}
.dl .mt{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
.empty{padding:26px;text-align:center;font-size:16px;font-weight:700;color:var(--ink2);
  border:1px dashed var(--blue-b);border-radius:12px;background:#f9fcff}
.spin{display:inline-block;width:16px;height:16px;border:3px solid var(--blue-b);
  border-top-color:var(--blue);border-radius:50%;animation:sp .8s linear infinite;vertical-align:-3px}
@keyframes sp{to{transform:rotate(360deg)}}
.mask{position:fixed;inset:0;background:rgba(10,30,60,.42);display:flex;align-items:center;
  justify-content:center;z-index:200;padding:20px}
.modal{background:#fff;border-radius:16px;padding:24px;max-width:520px;width:100%;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.toast{
  position:fixed;left:50%;bottom:34px;transform:translateX(-50%);z-index:300;
  background:#14243a;color:#fff;padding:13px 24px;border-radius:12px;font-size:16px;font-weight:600;
  box-shadow:0 8px 26px rgba(0,0,0,.3);max-width:80vw;
}
.toast.err{background:var(--red)}
.toast.ok{background:var(--green)}

/* ---------- 首页 ---------- */
.hero{max-width:1000px;margin:0 auto;padding:40px 22px 20px;text-align:center;color:#fff}
.hero .t{font-size:34px;font-weight:800;letter-spacing:2px;text-shadow:0 3px 12px rgba(0,0,0,.25)}
.hero .s{font-size:18px;margin-top:10px;color:#dceafa;font-weight:600}
.door{display:flex;gap:22px;flex-wrap:wrap;justify-content:center;margin-top:8px}
.door .card{flex:1 1 340px;max-width:430px;padding:26px}
.door .ic{
  width:60px;height:60px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  font-size:30px;margin-bottom:14px;
}
.door .ic.a{background:var(--blue-l);border:1px solid var(--blue-b)}
.door .ic.b{background:var(--amber-l);border:1px solid var(--amber-b)}
.door h3{margin:0 0 6px;font-size:22px;color:var(--ink)}
.door p{margin:0 0 18px;font-size:15px;color:var(--ink2);font-weight:600;line-height:1.65}
.bg{
  min-height:100vh;
  background:linear-gradient(150deg,#0f3f7c 0%,#1657a8 42%,#1f9ad6 100%);
}
/* ---------------- 视频课件 ---------------- */
.vidwrap{padding:20px 24px 6px}
.vidwrap video{width:100%;max-height:calc(100vh - 205px);background:#0b1220;border-radius:12px;
  box-shadow:0 8px 26px rgba(15,63,124,.16);display:block}

/* ---------------- 填空题作答 ---------------- */
.fillrow{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.fillbox{display:flex;flex-direction:column;gap:6px;flex:1 1 150px;min-width:140px;max-width:300px}
.fillbox i{font-style:normal;font-size:13px;font-weight:700;color:var(--ink2)}
.finp{
  border:1px solid var(--line);border-radius:10px;padding:9px 12px;
  font-size:16px;background:#fbfdff;color:var(--ink);
}
.finp:focus{outline:none;border-color:var(--blue);background:#fff;box-shadow:0 0 0 3px rgba(22,87,168,.13)}
.fillres{
  display:flex;flex-direction:column;gap:3px;flex:1 1 150px;min-width:140px;max-width:340px;
  border:1px solid var(--line);border-left:5px solid var(--red);border-radius:10px;
  padding:8px 12px;background:#fff;
}
.fillres.ok{border-left-color:var(--green)}
.fillres i{font-style:normal;font-size:13px;font-weight:700;color:var(--ink2)}
.fillres b{font-size:17px;color:var(--ink);word-break:break-all}
.fillres u{font-size:14px;font-weight:700;text-decoration:none;color:var(--red)}
.fillres.ok u{color:var(--green)}

/* ---------------- 结业证书 ---------------- */
.miss{margin:10px 0 0;padding-left:22px;font-size:16px;font-weight:600;color:var(--ink2)}
.miss li{margin:5px 0}
.certbox{padding:6px 0 26px}
.cert{
  position:relative;overflow:hidden;max-width:1000px;margin:0 auto;
  background:
    radial-gradient(circle at 10% 14%,rgba(22,87,168,.07),transparent 44%),
    radial-gradient(circle at 90% 86%,rgba(176,141,63,.13),transparent 46%),#fff;
  border:12px solid #fff;outline:3px double #b08d3f;border-radius:6px;
  box-shadow:0 18px 44px rgba(15,42,74,.18);padding:34px 46px 30px;
}
.cert .chd{display:flex;align-items:center;gap:14px;border-bottom:2px solid #e7dcc0;padding-bottom:14px}
.cert .chd img{width:52px;height:52px;object-fit:contain;flex:0 0 52px}
.cert .co{font-size:22px;font-weight:800;letter-spacing:2px;color:var(--ink)}
.cert .sub{font-size:12px;font-weight:600;color:#7f8ea3;letter-spacing:.6px;margin-top:3px}
.cert h1{font-size:42px;letter-spacing:16px;text-align:center;color:#1a3a63;margin:24px 0 4px;font-weight:800}
.cert .en{text-align:center;font-size:12px;letter-spacing:5px;color:#9aa9bd;text-transform:uppercase}
.cert .body{font-size:18px;line-height:2.15;color:#1d2b3d;margin:20px auto 4px;max-width:860px}
.cert .nm{font-size:26px;font-weight:800;color:var(--red);border-bottom:2px solid #d9c48a;padding:0 10px;margin:0 4px}
.cert table{width:100%;border-collapse:collapse;margin:16px 0 6px;font-size:14px}
.cert th,.cert td{border:1px solid #dfe6ef;padding:7px 9px;text-align:center;color:var(--ink2)}
.cert th{background:#f4f7fb;font-weight:700}
.cert .ftr{display:flex;justify-content:space-between;align-items:flex-end;margin-top:24px;font-size:15px;color:var(--ink2);font-weight:700;line-height:2}
.cert .seal{
  width:126px;height:126px;flex:0 0 126px;border:2px dashed #c9b98d;border-radius:50%;
  display:flex;align-items:center;justify-content:center;text-align:center;
  color:#b6a677;font-size:13px;line-height:1.6;font-weight:700;
}
.cert .wm{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none}
.cert .wm span{font-size:44px;font-weight:800;color:rgba(179,38,30,.13);letter-spacing:8px;transform:rotate(-16deg)}
.certbar{display:flex;align-items:center;gap:10px;margin-bottom:16px;flex-wrap:wrap}

@media print{
  @page{size:A4 landscape;margin:10mm}
  body{background:#fff}
  #top,.noprint,.toast{display:none !important}
  .wrap{max-width:none !important;padding:0 !important;margin:0 !important}
  .cert{box-shadow:none;max-width:none;border-width:8px;outline-width:2px;padding:20px 26px}
  .cert h1{font-size:34px;margin:16px 0 2px}
  .cert .body{font-size:15px;line-height:1.95}
}

/* ================= 手机端 / 平板适配 ================= */
@media (max-width:860px){
  /* ---- 顶栏：品牌单独一行，操作按钮换到第二行 ---- */
  .top .in{padding:10px 12px;gap:8px 10px;flex-wrap:wrap}
  .brand{flex:1 1 100%;gap:10px;min-width:0}
  .brand .logo{width:34px;height:34px;flex:0 0 34px;border-radius:10px}
  .brand>div{min-width:0;flex:1}
  .brand .t1{font-size:16px;letter-spacing:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .brand .t2{font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .top .sp{display:none}
  .chip{font-size:13px;padding:6px 12px}
  .tbtn{padding:9px 13px;font-size:14px;min-height:40px;flex:0 0 auto}
  .top .in>.chip{flex:0 1 auto;min-width:0}

  /* ---- 整体间距 ---- */
  .wrap{padding:14px 12px 44px}
  .pad{padding:16px 14px}
  .card{border-radius:12px}
  .h2{font-size:19px;margin-bottom:10px}
  .h3{font-size:16px;margin-bottom:9px}
  .row{gap:9px}
  .note{font-size:14px}

  /* ---- 触屏尺寸 ---- */
  .btn{padding:11px 15px;font-size:15px;min-height:44px;justify-content:center}
  .btn.sm{padding:10px 12px;font-size:14px;min-height:42px}
  .tag{font-size:13px;padding:4px 10px}
  .delx{width:34px;height:34px;font-size:17px}
  .check{font-size:15px;gap:9px}
  .check input{width:21px;height:21px;flex:0 0 21px}
  .inp{padding:12px 13px}

  /* ---- 首页 ---- */
  .hero{padding:26px 14px 12px}
  .hero .t{font-size:24px;letter-spacing:1px}
  .hero .s{font-size:15px;margin-top:8px}
  #hCompany{font-size:15px !important;line-height:1.4}
  .hlogo{width:36px;height:36px;flex:0 0 36px;border-radius:11px}
  #hStages{gap:8px !important;margin-top:14px !important}
  #hStages .chip{font-size:12px;padding:5px 10px}
  .door{gap:14px}
  .door .card{flex:1 1 100%;max-width:none;padding:20px 18px}
  .door h3{font-size:19px}
  .door p{font-size:14px;margin-bottom:14px}
  .door .ic{width:52px;height:52px;font-size:26px;border-radius:14px;margin-bottom:11px}

  /* ---- 学习页：阶段进度条改成横向滑动（保持"进度条"观感） ---- */
  .stepper{flex-direction:row;flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden;
    scroll-snap-type:x mandatory;border-radius:14px;margin-bottom:16px;
    -webkit-overflow-scrolling:touch}
  .step{flex:0 0 84%;scroll-snap-align:start;padding:13px 14px 12px;
    border-right:1px solid var(--line);border-bottom:0}
  .step:last-child{border-right:0}
  .step .n{font-size:17px}
  .step .d{font-size:13px;white-space:normal;overflow:visible;text-overflow:clip;line-height:1.45;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
  .step .bar{height:8px;margin-top:9px}
  .step .num{font-size:13px;margin-top:6px}
  .step .ck{top:10px;right:12px;font-size:16px}
  #head .row{gap:10px}
  #head .h2{font-size:18px}
  #head .tag{flex:0 0 auto}

  /* ---- 学习页：文件条目 ---- */
  .item{flex-wrap:wrap;gap:11px;padding:13px 12px;margin-bottom:10px;border-radius:12px}
  .item .no{width:36px;height:36px;flex:0 0 36px;font-size:16px;border-radius:10px}
  .item .mid{flex:1 1 calc(100% - 50px)}
  .item .nm{font-size:16px;line-height:1.45}
  .item .mt{gap:6px;margin-top:7px}
  .item .act{width:100%;justify-content:flex-start;gap:8px}
  .item .act .btn{flex:1 1 0;min-width:0;padding:11px 8px}
  #exam .row{gap:10px}
  #exam .btn{flex:1 1 100%}

  /* ---- 阅读器 ---- */
  .rdr .bar{padding:8px 10px;gap:7px}
  .rdr .bar .sp{display:none}
  .rdr .bar .tt{flex:1 1 100%;order:9;font-size:14px;line-height:1.4;white-space:normal;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
  .rdr .bar .pg{font-size:12px;padding:5px 10px}
  #pgTag{display:none}
  .rdr .bar .btn{padding:9px 11px;font-size:14px;min-height:40px}
  .rdr .bar .btn.sm{padding:8px 10px;font-size:13px;min-height:38px}
  .paperwrap{padding:12px 8px 6px}
  .paper{padding:22px 15px;min-height:auto;max-width:none;border-radius:4px}
  .paper .pt{font-size:17px;padding-bottom:10px;margin-bottom:16px}
  .doc{line-height:1.85}
  .doc table{display:block;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch}
  .doc img{max-width:100%;height:auto}
  .rdr .foot{padding:9px 10px;gap:8px}
  .rdr .track{flex:1 1 auto;order:-2;min-width:0;height:9px}
  .pgnum{order:-1;font-size:14px;flex:0 0 auto}
  .rdr .foot .btn{flex:1 1 auto;min-width:0;padding:12px 6px}
  .pgnum input{width:52px;padding:8px 5px}
  .pdfhint{display:block;margin:0 0 10px;padding:10px 12px;border-radius:10px;
    border:1px solid var(--amber-b);background:var(--amber-l);color:var(--amber);
    font-size:14px;font-weight:600;line-height:1.6}
  .pdfbox{height:calc(100vh - 260px);min-height:340px}
  .vidwrap{padding:10px 6px 4px}
  .vidwrap video{max-height:calc(100vh - 215px);border-radius:8px}

  /* ---- 测验 ---- */
  .qcard{padding:15px 13px;border-radius:12px;margin-bottom:12px}
  .qcard .qh{gap:9px}
  .qcard .qn{flex:0 0 28px;height:28px;font-size:14px;border-radius:8px}
  .qcard .qt{font-size:16px;line-height:1.6}
  .opt{padding:13px 12px;margin-top:9px;gap:10px;border-radius:11px}
  .opt .k{flex:0 0 28px;height:28px;font-size:14px}
  .opt .v{font-size:15px;line-height:1.55}
  .exp{font-size:14px;padding:11px 12px;line-height:1.6}
  .score{padding:20px 14px}
  .score .big{font-size:36px}
  .score .lb{font-size:15px}
  .fillrow{gap:10px}
  .fillbox,.fillres{flex:1 1 100%;max-width:none;min-width:0}
  .finp{padding:12px}

  /* ---- 管理台 ---- */
  .tabs{flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden;gap:8px;
    padding-bottom:6px;margin-bottom:14px;-webkit-overflow-scrolling:touch}
  .tab{flex:0 0 auto;padding:11px 14px;font-size:15px;white-space:nowrap}
  .stagetabs{flex-wrap:nowrap;overflow-x:auto;gap:8px;padding-bottom:6px;
    -webkit-overflow-scrolling:touch}
  .stagetab{flex:0 0 auto;min-width:160px;padding:10px 13px}
  .stagetab .n{font-size:15px}
  .stagetab .d{font-size:13px}
  .drop{padding:22px 14px;border-radius:12px}
  .drop .big{font-size:16px;line-height:1.55}
  .drop .sm{font-size:13px;line-height:1.6;overflow-wrap:anywhere;word-break:break-all}
  .drop .big{overflow-wrap:anywhere}
  .dl{flex-wrap:wrap;gap:9px;padding:11px}
  .dl .idx{width:28px;height:28px;flex:0 0 28px;font-size:14px;border-radius:8px}
  .dl>*:nth-child(2){flex:1 1 calc(100% - 40px) !important}
  .dl .nm{font-size:15px;line-height:1.45}
  .dl .mt{gap:6px;margin-top:5px}
  .dl>.row{width:100%;gap:7px !important;margin-top:3px}
  .dl>.row .btn{flex:1 1 30%;min-width:0;padding:10px 5px;font-size:13px}
  table.grid{font-size:13px}
  table.grid th{padding:9px 7px}
  table.grid td{padding:8px 7px}
  .empty{padding:20px 14px;font-size:14px;line-height:1.7}

  /* ---- 弹窗：小屏改成可滚动的近全屏卡片 ---- */
  .mask{padding:10px;align-items:flex-start;overflow-y:auto;-webkit-overflow-scrolling:touch}
  .modal{max-width:none;width:100%;padding:18px 15px;border-radius:14px;margin:4px 0 24px}
  .modal .h3{font-size:16px;line-height:1.5}
  .modal .row{gap:8px}
  .modal .row .btn{flex:1 1 auto}
  .toast{bottom:16px;max-width:92vw;font-size:15px;padding:12px 18px;line-height:1.5}

  /* ---- 结业证书 ---- */
  #bar .row{gap:9px}
  #bar .h2{flex:1 1 100%;font-size:18px}
  #bar .btn{flex:1 1 auto;min-width:0}
  #bar .sp{display:none}
  .miss{font-size:15px;padding-left:20px}
  .certbox{padding:2px 0 18px}
  .cert{padding:20px 14px 18px;border-width:7px;outline-width:2px;border-radius:4px}
  .cert .chd{flex-wrap:wrap;gap:10px;padding-bottom:11px}
  .cert .chd img{width:40px;height:40px;flex:0 0 40px}
  .cert .co{font-size:16px;letter-spacing:.5px;line-height:1.35}
  .cert .sub{font-size:10px;letter-spacing:.2px}
  .cert h1{font-size:25px;letter-spacing:5px;margin:18px 0 2px}
  .cert .en{font-size:10px;letter-spacing:2px}
  .cert .body{font-size:15px;line-height:1.95;margin:14px auto 2px}
  .cert .nm{font-size:19px;padding:0 6px;margin:0 2px}
  .cert table{display:block;overflow-x:auto;white-space:nowrap;font-size:12px;
    -webkit-overflow-scrolling:touch}
  .cert th,.cert td{padding:6px}
  .cert .ftr{flex-direction:column;align-items:flex-start;gap:14px;margin-top:18px;
    font-size:13px;line-height:1.9}
  .cert .seal{width:94px;height:94px;flex:0 0 94px;font-size:11px;line-height:1.5}
  .cert .wm span{font-size:26px;letter-spacing:4px}
}

/* ---- 窄屏手机（≤420px）再收一档 ---- */
@media (max-width:420px){
  .wrap{padding:12px 9px 40px}
  .brand .t1{font-size:15px}
  .hero .t{font-size:21px}
  .step{flex:0 0 90%}
  .item .act .btn{flex:1 1 100%}
  .cert h1{font-size:21px;letter-spacing:3px}
  .cert .co{font-size:15px}
  .rdr .bar .btn{padding:8px 9px;font-size:13px}
}