/* ===================== 报关通 · 从0到上岗 样式 ===================== */
:root{
  --bg:#f4f6fb;
  --surface:#ffffff;
  --surface-2:#f8fafc;
  --ink:#1f2a44;
  --ink-2:#5b6678;
  --ink-3:#8a93a6;
  --line:#e6eaf2;
  --brand:#1f4e9c;
  --brand-2:#2f6fd6;
  --brand-soft:#e8f0fc;
  --accent:#e6a23c;
  --ok:#2faa6a;
  --ok-soft:#e6f6ee;
  --warn:#d9534f;
  --warn-soft:#fdeaea;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 6px 20px rgba(31,78,156,.08);
  --shadow-2:0 2px 8px rgba(31,78,156,.06);
  --maxw:1180px;
  --nav-h:64px;
  --side-w:240px;
  font-synthesis:none;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{margin:0;padding:0;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.65;
  font-size:15px;-webkit-font-smoothing:antialiased;
}
a{color:var(--brand-2);text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
::selection{background:var(--brand-soft);}

/* ---------- 布局骨架 ---------- */
.app{display:flex;min-height:100vh;}
.sidebar{
  width:var(--side-w);flex:0 0 var(--side-w);
  background:linear-gradient(180deg,#1f3a73,#1f4e9c);
  color:#fff;position:sticky;top:0;height:100vh;
  display:flex;flex-direction:column;padding:18px 12px;
}
.brand{display:flex;align-items:center;gap:10px;padding:6px 10px 18px;}
.brand .logo{font-size:26px;}
.brand .name{font-weight:700;font-size:17px;letter-spacing:.5px;}
.brand .sub{font-size:11px;opacity:.7;margin-top:2px;}
.nav{display:flex;flex-direction:column;gap:4px;flex:1;}
.nav-item{
  display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:12px;
  color:#dfe7f5;font-size:14.5px;background:transparent;border:none;width:100%;text-align:left;
  transition:.18s;
}
.nav-item .ico{font-size:18px;width:22px;text-align:center;}
.nav-item:hover{background:rgba(255,255,255,.08);color:#fff;}
.nav-item.active{background:#fff;color:var(--brand);font-weight:600;box-shadow:var(--shadow-2);}
.side-foot{padding:10px;font-size:11px;opacity:.6;border-top:1px solid rgba(255,255,255,.12);}
.main{flex:1;min-width:0;display:flex;flex-direction:column;}
.topbar{
  height:var(--nav-h);background:var(--surface);border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;padding:0 20px;
  position:sticky;top:0;z-index:20;
}
.topbar h1{font-size:18px;margin:0;font-weight:700;}
.topbar .crumb{color:var(--ink-3);font-size:13px;margin-top:2px;}
.topbar .actions{display:flex;gap:10px;align-items:center;}
.content{padding:22px 20px 40px;max-width:var(--maxw);width:100%;margin:0 auto;}

/* ---------- 通用卡片 ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-2);}
.grid{display:grid;gap:14px;}
.section-title{font-size:16px;font-weight:700;margin:6px 0 12px;display:flex;align-items:center;gap:8px;}
.muted{color:var(--ink-3);}

/* ---------- 首页 ---------- */
.hero{
  border-radius:20px;padding:26px 24px;color:#fff;
  background:linear-gradient(120deg,#3aa0ff,#8fd3ff 70%);
  box-shadow:var(--shadow);position:relative;overflow:hidden;
}
.hero h2{margin:0 0 8px;font-size:23px;text-shadow:0 1px 2px rgba(0,40,90,.18);}
.hero p{margin:0;opacity:.92;max-width:620px;}
.hero .stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px 22px;margin-top:18px;}
.hero .stat .n{font-size:22px;font-weight:800;}
.hero .stat .l{font-size:12px;opacity:.82;}
.hero .badge{position:absolute;right:-30px;top:-30px;font-size:120px;opacity:.12;}

.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px;margin-top:18px;}
.tile{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px;
  display:flex;flex-direction:column;gap:6px;transition:.18s;box-shadow:var(--shadow-2);
}
.tile:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#cdd9ec;}
.tile .ico{font-size:24px;}
.tile .t{font-weight:700;font-size:15px;}
.tile .d{font-size:12.5px;color:var(--ink-2);}
.tile .bar{height:6px;border-radius:6px;background:var(--surface-2);overflow:hidden;margin-top:6px;}
.tile .bar i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:6px;transition:width .5s;}
.tile .p{font-size:11px;color:var(--ink-3);}

.roadmap{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin-top:14px;}
.step{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px;text-align:center;}
.step .num{width:30px;height:30px;border-radius:50%;background:var(--brand-soft);color:var(--brand);font-weight:800;display:inline-flex;align-items:center;justify-content:center;margin-bottom:8px;}
.step .t{font-weight:700;font-size:14px;}
.step .d{font-size:12px;color:var(--ink-2);margin-top:4px;}

/* ---------- 理论学习 ---------- */
.module-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;}
.module-card{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px;
  cursor:pointer;transition:.18s;box-shadow:var(--shadow-2);position:relative;overflow:hidden;
}
.module-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);}
.module-card .top{display:flex;align-items:center;gap:12px;}
.module-card .ic{font-size:30px;}
.module-card .mt{font-weight:700;font-size:16px;}
.module-card .ms{font-size:12.5px;color:var(--ink-2);margin:8px 0 10px;}
.module-card .prog{height:6px;border-radius:6px;background:var(--surface-2);overflow:hidden;}
.module-card .prog i{display:block;height:100%;background:linear-gradient(90deg,var(--ok),#5fd49a);border-radius:6px;}
.module-card .pl{font-size:11px;color:var(--ink-3);margin-top:6px;}

.chapter-list{display:flex;flex-direction:column;gap:10px;margin-top:6px;}
.chapter{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 16px;cursor:pointer;transition:.15s;
}
.chapter:hover{border-color:#cdd9ec;background:var(--surface-2);}
.chapter .ch-top{display:flex;align-items:center;justify-content:space-between;gap:10px;}
.chapter .ch-t{font-weight:600;}
.chapter .done{color:var(--ok);font-size:13px;}

.point{
  background:var(--surface-2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-bottom:10px;
}
.point .pt{font-weight:700;color:var(--brand);font-size:14px;margin-bottom:4px;}
.point .pd{font-size:14px;color:var(--ink);}
.point .tip{
  margin-top:8px;background:var(--brand-soft);border-left:3px solid var(--brand-2);
  padding:8px 10px;border-radius:6px;font-size:13px;color:#274a82;
}
.point .tip b{color:var(--brand);}

/* ---------- 实操 / 考试 通用 ---------- */
.ex-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px;}
.ex-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px;cursor:pointer;transition:.18s;box-shadow:var(--shadow-2);}
.ex-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);}
.ex-card .et{font-weight:700;font-size:15px;}
.ex-card .es{font-size:13px;color:var(--ink-2);margin:8px 0;}
.ex-card .done{color:var(--ok);font-size:12px;}

.q-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px;box-shadow:var(--shadow-2);}
.q-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px;}
.q-tag{font-size:11px;padding:2px 9px;border-radius:20px;background:var(--brand-soft);color:var(--brand);}
.q-tag.t{background:#fef3e0;color:#b9772a;}
.q-text{font-size:16px;font-weight:600;margin-bottom:14px;}
.opt{display:flex;gap:10px;align-items:flex-start;padding:11px 13px;border:1px solid var(--line);border-radius:10px;margin-bottom:9px;cursor:pointer;transition:.15s;background:var(--surface);}
.opt:hover{border-color:#cdd9ec;background:var(--surface-2);}
.opt.sel{border-color:var(--brand-2);background:var(--brand-soft);}
.opt.correct{border-color:var(--ok);background:var(--ok-soft);}
.opt.wrong{border-color:var(--warn);background:var(--warn-soft);}
.opt .mk{width:22px;height:22px;border-radius:50%;border:1px solid var(--line);flex:0 0 22px;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--ink-3);}
.opt.sel .mk,.opt.correct .mk,.opt.wrong .mk{color:#fff;border-color:transparent;}
.opt.correct .mk{background:var(--ok);}
.opt.wrong .mk{background:var(--warn);}
.opt.sel .mk{background:var(--brand-2);}
.fill-input{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;font-size:15px;margin-bottom:10px;}
.fill-input:focus{outline:none;border-color:var(--brand-2);}
.q-explain{background:var(--surface-2);border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin-top:14px;font-size:14px;display:none;}
.q-explain.show{display:block;}
.q-explain .hd{font-weight:700;color:var(--brand);margin-bottom:4px;}
.q-actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap;}

.btn{background:var(--brand);color:#fff;border:none;padding:10px 18px;border-radius:10px;font-size:14px;font-weight:600;transition:.15s;}
.btn:hover{background:var(--brand-2);}
.btn.sec{background:var(--surface);color:var(--brand);border:1px solid var(--brand);}
.btn.sec:hover{background:var(--brand-soft);}
.btn.ghost{background:var(--surface-2);color:var(--ink-2);border:1px solid var(--line);}
.btn.ok{background:var(--ok);}
.btn.ok:hover{filter:brightness(1.05);}

/* ---------- 进度条 / 结果 ---------- */
.score-bar{display:flex;align-items:center;gap:14px;margin:10px 0;}
.score-ring{width:84px;height:84px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px;color:var(--brand);background:conic-gradient(var(--ok) var(--p,0%),var(--line) 0);position:relative;}
.score-ring span{width:66px;height:66px;border-radius:50%;background:var(--surface);display:flex;align-items:center;justify-content:center;}
.result-list{display:flex;flex-direction:column;gap:8px;}
.result-item{display:flex;gap:10px;align-items:flex-start;padding:10px;border:1px solid var(--line);border-radius:10px;font-size:14px;}
.result-item.ok{border-left:4px solid var(--ok);}
.result-item.no{border-left:4px solid var(--warn);}

/* ---------- 错题本 ---------- */
.empty{text-align:center;padding:60px 20px;color:var(--ink-3);}
.empty .ic{font-size:50px;opacity:.5;}

/* ---------- 打卡 ---------- */
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;max-width:480px;}
.cal .dow{text-align:center;font-size:12px;color:var(--ink-3);padding:4px 0;}
.cal .day{aspect-ratio:1;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:13px;background:var(--surface-2);border:1px solid var(--line);position:relative;}
.cal .day.today{border-color:var(--brand);font-weight:700;}
.cal .day.checked{background:var(--ok);color:#fff;border-color:var(--ok);}
.cal .day.checked::after{content:"✓";position:absolute;font-size:14px;}
.cal .day.muted{opacity:.35;}
.streak{display:flex;gap:18px;margin:14px 0;flex-wrap:wrap;}
.streak .s{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 18px;text-align:center;box-shadow:var(--shadow-2);}
.streak .s .n{font-size:24px;font-weight:800;color:var(--brand);}
.streak .s .l{font-size:12px;color:var(--ink-3);}

/* ---------- 我的 / 设置 ---------- */
.set-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;background:var(--surface);}
.set-row .lab{font-weight:600;}
.set-row .desc{font-size:12.5px;color:var(--ink-3);}
.changelog{display:flex;flex-direction:column;gap:10px;}
.cl{display:flex;gap:12px;padding:10px 0;border-bottom:1px dashed var(--line);}
.cl .date{font-size:12px;color:var(--brand);font-weight:700;flex:0 0 92px;}
.cl .tag{font-size:11px;background:var(--brand-soft);color:var(--brand);padding:1px 7px;border-radius:10px;flex:0 0 auto;height:fit-content;}
.cl .txt{font-size:13.5px;color:var(--ink-2);}
.sources{font-size:13px;color:var(--ink-2);line-height:2;}

.toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;padding:11px 20px;border-radius:30px;font-size:14px;opacity:0;pointer-events:none;transition:.25s;z-index:100;}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}

/* ---------- 底部移动导航 ---------- */
.bottom-nav{display:none;}

/* ---------- 响应式 ---------- */
@media (max-width:860px){
  .sidebar{display:none;}
  .main{width:100%;}
  .content{padding:16px 14px 90px;}
  .topbar{padding:0 14px;}
  .bottom-nav{
    display:flex;position:fixed;bottom:0;left:0;right:0;height:62px;background:var(--surface);
    border-top:1px solid var(--line);z-index:30;justify-content:space-around;align-items:center;
    box-shadow:0 -4px 16px rgba(0,0,0,.05);
  }
  .bn{display:flex;flex-direction:column;align-items:center;gap:2px;font-size:10.5px;color:var(--ink-3);background:none;border:none;flex:1;padding:6px 0;}
  .bn .ic{font-size:19px;}
  .bn.active{color:var(--brand);font-weight:700;}
  .hero h2{font-size:20px;}
  .tiles{grid-template-columns:1fr 1fr;}
  .tile .d{display:none;}
  .module-list,.ex-list{grid-template-columns:1fr;}
}
@media (max-width:480px){
  .tiles{grid-template-columns:1fr;}
  .hero .stats{gap:14px;}
}

/* 工具箱：参考表 / 算税计算器 / 归类练习 */
.ref-table{width:100%;border-collapse:collapse;background:var(--surface);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-2);font-size:14px;}
.ref-table th,.ref-table td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top;}
.ref-table th{background:var(--brand-soft);color:var(--brand);font-weight:700;white-space:nowrap;}
.ref-table tr:nth-child(even) td{background:var(--surface-2);}
.calc-wrap{max-width:560px;}
.calc-row{display:flex;gap:10px;align-items:center;margin-bottom:10px;flex-wrap:wrap;}
.calc-row label{width:150px;color:var(--ink-2);font-size:13px;flex-shrink:0;}
.calc-row input,.calc-row select{flex:1;min-width:110px;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font-size:14px;background:var(--surface);color:inherit;}
.calc-row input:focus,.calc-row select:focus{outline:none;border-color:var(--brand-2);}
.out-box{margin-top:12px;background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:14px 16px;}
.out-box .line{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px dashed var(--line);font-size:14px;}
.out-box .line:last-child{border-bottom:none;}
.out-box b{color:var(--brand);font-size:15px;}
.classify-item{border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-bottom:14px;background:var(--surface);}
.classify-item .desc{font-weight:600;margin-bottom:8px;font-size:14.5px;}
.classify-item input{width:170px;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font-size:14px;background:var(--surface);color:inherit;}
.classify-item .fb{margin-top:8px;font-size:13px;font-weight:600;}
.classify-item .fb.ok{color:var(--ok);}
.classify-item .fb.no{color:#d33;}
.hint{color:var(--ink-3);font-size:12.5px;margin-top:6px;line-height:1.5;}
.decl-form{max-width:640px;margin-top:6px;}
.decl-group{border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:14px;background:var(--surface);}
.decl-group .dh{font-weight:700;color:var(--brand);margin-bottom:8px;font-size:14px;}
.decl-row{display:flex;gap:10px;align-items:center;margin-bottom:10px;flex-wrap:wrap;}
.decl-row label{width:180px;color:var(--ink-2);font-size:13px;flex-shrink:0;}
.decl-row input{flex:1;min-width:120px;padding:9px 11px;border:1px solid var(--line);border-radius:9px;font-size:14px;background:var(--surface);color:inherit;}
.decl-row input:focus{outline:none;border-color:var(--brand-2);}
.decl-fb{flex-basis:100%;margin:-4px 0 2px;font-size:12.5px;font-weight:600;color:var(--ink-3);}
.decl-fb.ok{color:var(--ok);}
.decl-fb.no{color:#d33;}
@media (max-width:480px){
  .decl-row label{width:100%;}
}

/* 添加到主屏幕 · 安装引导 */
.install-guide{position:fixed;left:12px;right:12px;bottom:12px;z-index:60;background:linear-gradient(120deg,#1f4e9c,#2f6fd6);color:#fff;border-radius:16px;padding:13px 14px;box-shadow:0 10px 30px rgba(31,78,156,.35);display:flex;gap:11px;align-items:flex-start;animation:igIn .35s ease;}
.install-guide .ig-ic{font-size:22px;line-height:1;flex-shrink:0;}
.install-guide .ig-bd{flex:1;min-width:0;}
.install-guide .ig-t{font-weight:800;font-size:14px;margin-bottom:3px;}
.install-guide .ig-d{font-size:12.5px;line-height:1.5;opacity:.95;}
.install-guide .ig-d b{font-weight:800;}
.install-guide .ig-x{background:rgba(255,255,255,.18);border:none;color:#fff;width:24px;height:24px;border-radius:50%;font-size:15px;cursor:pointer;flex-shrink:0;line-height:1;}
@keyframes igIn{from{transform:translateY(20px);opacity:0;}to{transform:translateY(0);opacity:1;}}
@media (min-width:860px){
  .install-guide{max-width:360px;left:auto;right:18px;bottom:18px;}
}

  /* 锁定卡片 / 激活入口 */
  .module-card.locked, .tile.locked{opacity:.72;cursor:pointer}
  .lk-mini{margin-left:auto;font-size:15px;color:var(--brand);font-weight:700;flex:0 0 auto}
  .lock-card{background:linear-gradient(135deg,#eaf4ff,#f7fbff);border:1px dashed var(--brand);
    border-radius:var(--radius);padding:26px 18px;text-align:center;box-shadow:var(--shadow)}
  .lock-card .lk-ic{font-size:34px}
  .lock-card .lk-t{font-size:16px;font-weight:700;margin:8px 0 4px}
  .lock-card .lk-d{font-size:13px;color:var(--muted);margin-bottom:14px}
  .act-banner{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;
    background:rgba(255,255,255,.94);border:1px solid #bfe0ff;border-radius:12px;padding:10px 14px;margin-top:14px;
    font-size:13px;color:var(--brand-d)}
  .act-banner .btn{padding:9px 14px;font-size:13px;margin-top:0}
  @media(max-width:480px){.act-banner{justify-content:center;text-align:center}}