:root{
  --ink:#172033; --navy:#17365d; --blue:#244a73; --muted:#6b7280;
  --paper:#f6f5f1; --card:#ffffff; --line:#dfe3e8; --soft:#eef2f6;
  --green:#2f6b58; --amber:#9a6a19; --red:#9c3f3f;
  --shadow:0 14px 40px rgba(20,35,55,.08);
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  letter-spacing:.01em;
}
button,input,select,textarea{font:inherit}
a{color:inherit}
.shell{max-width:1180px;margin:0 auto;padding:0 24px 64px}
.topbar{
  height:68px;display:flex;align-items:center;justify-content:space-between;
  border-bottom:1px solid rgba(23,54,93,.14);
}
.brand{display:flex;align-items:center;gap:13px}
.mark{
  width:46px;height:46px;flex:0 0 46px;
  border:none;display:block;border-radius:50%;
  background:url("images/image_1.png") center/contain no-repeat;
}
.brand b{font-size:15px}.brand small{display:block;color:var(--muted);font-size:11px;margin-top:2px}
.actions{display:flex;gap:8px}
.btn{
  border:1px solid var(--line);background:#fff;color:var(--ink);padding:9px 13px;border-radius:10px;
  cursor:pointer;font-weight:650;font-size:13px
}
.btn.primary{background:var(--navy);border-color:var(--navy);color:#fff}
.hero{
  padding:68px 0 46px;display:grid;grid-template-columns:1.35fr .65fr;gap:54px;align-items:end;
  position:relative;isolation:isolate;overflow:hidden;min-height:400px
}
.hero-bg-layer{
  content:"";position:absolute;z-index:-2;pointer-events:none;
  top:8px;left:0;width:min(800px,calc(68% - 18px));height:340px;
  background-image:
    linear-gradient(90deg,rgba(246,245,241,.14) 0%,rgba(246,245,241,.20) 46%,rgba(246,245,241,.72) 78%,rgba(246,245,241,.98) 94%,rgba(246,245,241,1) 100%),
    linear-gradient(180deg,rgba(246,245,241,.06) 0%,rgba(246,245,241,.08) 42%,rgba(246,245,241,.48) 66%,rgba(246,245,241,.90) 84%,rgba(246,245,241,1) 100%),
    var(--hero-bg-image, url("images/image_2.jpeg"));
  background-size:cover;background-position:center 35%;background-repeat:no-repeat;
  opacity:.46;filter:saturate(.72) contrast(.94) brightness(1.03);
  -webkit-mask-image:linear-gradient(90deg,#000 0%,#000 72%,rgba(0,0,0,.92) 80%,rgba(0,0,0,.52) 90%,transparent 100%);
  mask-image:linear-gradient(90deg,#000 0%,#000 72%,rgba(0,0,0,.92) 80%,rgba(0,0,0,.52) 90%,transparent 100%);
}
.hero::after{
  content:"";position:absolute;z-index:-1;pointer-events:none;inset:0;
  background:
    linear-gradient(90deg,rgba(246,245,241,.78) 0%,rgba(246,245,241,.52) 26%,rgba(246,245,241,.14) 50%,rgba(246,245,241,0) 66%),
    linear-gradient(180deg,rgba(246,245,241,0) 0%,rgba(246,245,241,.08) 50%,rgba(246,245,241,.72) 74%,rgba(246,245,241,.96) 90%,rgba(246,245,241,1) 100%);
}
.hero>div:not(.hero-bg-layer){position:relative;z-index:1}
.eyebrow{font-size:12px;font-weight:800;letter-spacing:.18em;color:var(--navy);text-transform:uppercase}
h1{font-size:clamp(38px,6vw,72px);line-height:1.02;margin:16px 0 20px;letter-spacing:-.045em}
.hero p{margin:0;max-width:700px;color:#536071;font-size:16px;line-height:1.8}
.hero-meta{border-left:1px solid var(--line);padding-left:30px}
.meta-row{padding:15px 0;border-bottom:1px solid var(--line)}
.meta-row span{display:block;color:var(--muted);font-size:11px;margin-bottom:5px}
.meta-row strong{font-size:16px}
.demo-note{margin-top:16px;color:var(--amber);font-size:12px;line-height:1.7}
.section{margin-top:26px}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin:0 0 16px}
.section-head h2{margin:0;font-size:24px;letter-spacing:-.025em}
.section-head p{margin:5px 0 0;color:var(--muted);font-size:13px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.route-picker{padding:22px}
.picker-grid{display:grid;grid-template-columns:1fr auto;gap:12px}
select{
  width:100%;border:1px solid #cfd6de;background:#fff;border-radius:12px;padding:14px 15px;
  color:var(--ink);outline:none
}
.route-panel{margin-top:16px;display:none}
.route-summary{
  padding:22px;display:grid;grid-template-columns:1.1fr .9fr;gap:24px;border-bottom:1px solid var(--line)
}
.route-summary h3{margin:0 0 8px;font-size:28px}
.route-summary .muted{color:var(--muted);font-size:13px;line-height:1.7}
.statusbox{background:var(--soft);border-radius:14px;padding:16px 18px}
.statusbox span{display:block;color:var(--muted);font-size:11px;margin-bottom:7px}
.statusbox strong{font-size:17px}
.timeline{padding:8px 22px 24px}
.stop{
  display:grid;grid-template-columns:64px 1fr auto;gap:14px;align-items:center;
  padding:18px 0;border-bottom:1px solid var(--line);position:relative
}
.stop:last-child{border-bottom:0}
.stop-index{width:44px;height:44px;border-radius:50%;background:var(--soft);display:grid;place-items:center;font-weight:800;color:var(--navy)}
.stop.active .stop-index{background:var(--navy);color:#fff}
.stop.done .stop-index{background:#dfe9e5;color:var(--green)}
.stop-title b{display:block;font-size:16px;margin-bottom:4px}
.stop-title small{color:var(--muted);line-height:1.5}
.stop-time{text-align:right;font-weight:750;font-size:14px;white-space:nowrap}
.stop-time small{display:block;color:var(--muted);font-weight:500;margin-top:4px}
.labs{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.lab-card{
  padding:20px;min-height:195px;display:flex;flex-direction:column;position:relative;overflow:hidden;isolation:isolate;
  --cover-opacity:.18;--cover-image:none;
}
.lab-card::before{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background-image:var(--cover-image);background-size:cover;background-position:center center;background-repeat:no-repeat;
  opacity:var(--cover-opacity);transform:scale(1.01);
}
.lab-card::after{
  content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
  background:linear-gradient(90deg,rgba(255,255,255,.78) 0%,rgba(255,255,255,.62) 58%,rgba(255,255,255,.46) 100%);
}
.lab-card:not(.has-cover)::before,.lab-card:not(.has-cover)::after{display:none}
.lab-card>*{position:relative;z-index:1}
.lab-card .no{color:var(--navy);font-size:11px;font-weight:800;letter-spacing:.16em}
.lab-card h3{font-size:19px;margin:12px 0 9px;letter-spacing:-.02em}
.lab-card p{color:#566274;line-height:1.7;font-size:13px;margin:0}
.lab-meta{margin-top:auto;padding-top:18px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.lab-meta span{font-size:11px;color:#697586}
.lab-meta b{display:block;color:var(--ink);font-size:13px;margin-top:3px}
.lab-card[role="button"]{cursor:pointer;transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease;outline:none}
.lab-card[role="button"]:focus-visible{box-shadow:0 0 0 3px rgba(36,74,115,.18),var(--shadow);border-color:rgba(36,74,115,.46)}
.lab-card[role="button"] .lab-open-hint{margin-top:13px;padding-top:11px;border-top:1px solid rgba(23,54,93,.12);font-size:11px;font-weight:750;color:var(--navy);display:flex;align-items:center;justify-content:space-between;gap:8px}
.lab-card[role="button"] .lab-open-hint::after{content:"查看 →";font-weight:800;white-space:nowrap}
@media(hover:hover) and (pointer:fine){.lab-card[role="button"]:hover{transform:translateY(-2px);border-color:rgba(36,74,115,.28);box-shadow:0 18px 44px rgba(20,35,55,.12)}}

/* 教师讲解时间表 */
.teacher-modal-card{width:min(900px,100%);max-height:90vh}
.teacher-schedule-hero{padding:20px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:start;border-bottom:1px solid var(--line);background:linear-gradient(135deg,#f8fafc,#fff)}
.teacher-schedule-hero h4{margin:0 0 7px;font-size:22px;letter-spacing:-.02em}
.teacher-schedule-hero p{margin:0;color:var(--muted);font-size:12px;line-height:1.7}
.teacher-schedule-summary{min-width:235px;background:var(--soft);border-radius:14px;padding:13px 15px}
.teacher-schedule-summary span{display:block;color:var(--muted);font-size:10px;margin-bottom:5px}
.teacher-schedule-summary strong{display:block;font-size:14px;line-height:1.55;color:var(--ink)}
.teacher-schedule-body{padding:0 20px 20px}
.teacher-schedule-note{padding:13px 0;color:var(--muted);font-size:11px;line-height:1.65}
.teacher-table-wrap{overflow:auto;border:1px solid var(--line);border-radius:13px;background:#fff}
.teacher-table{width:100%;border-collapse:collapse;min-width:860px;font-size:12px}
.teacher-table th{position:sticky;top:0;background:#f4f6f8;color:#647184;font-weight:700;text-align:left;padding:10px 11px;border-bottom:1px solid var(--line);white-space:nowrap}
.teacher-table td{padding:11px;border-bottom:1px solid #edf0f3;vertical-align:middle}
.teacher-table tr:last-child td{border-bottom:0}
.teacher-table .time{font-weight:800;color:var(--navy);white-space:nowrap;font-variant-numeric:tabular-nums}
.teacher-table .class-name{font-weight:800;font-size:13px}
.teacher-table .sub{display:block;color:var(--muted);font-size:10px;margin-top:3px;line-height:1.45}
.teacher-empty{padding:34px 20px;text-align:center;color:var(--muted);line-height:1.8}
.lab-cover-note{margin:0 0 10px;color:var(--muted);font-size:11px;line-height:1.65}
.cover-tools{min-width:188px}
.cover-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.cover-btn{padding:7px 9px;font-size:11px;border-radius:8px}
.cover-preview{
  width:64px;height:40px;border:1px solid var(--line);border-radius:8px;background:#f3f5f7 center/cover no-repeat;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.45);flex:0 0 auto;
}
.cover-preview.empty{display:grid;place-items:center;color:#9aa3ad;font-size:9px;background:#f6f7f8}
.cover-opacity{margin-top:8px;display:grid;grid-template-columns:1fr 42px;gap:8px;align-items:center}
.cover-opacity input[type="range"]{width:100%;accent-color:var(--navy)}
.cover-opacity output{font-size:11px;color:var(--muted);text-align:right;font-variant-numeric:tabular-nums}
.lab-editor-actions{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  margin:12px 0 10px;
}
.lab-editor-actions span{font-size:12px;color:var(--muted)}
.lab-row-actions{display:flex;align-items:center;gap:6px;white-space:nowrap}
.lab-row-actions .mini{
  width:32px;height:32px;padding:0;border-radius:9px;display:grid;place-items:center;
  border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--navy);font-weight:800;
}
.lab-row-actions .mini:hover{background:var(--soft)}
.lab-row-actions .danger{color:var(--red);border-color:rgba(156,63,63,.24)}
.lab-row-actions .danger:hover{background:rgba(156,63,63,.06)}
.lab-row-actions .mini:disabled{opacity:.32;cursor:not-allowed}

.cover-remove{border:0;background:transparent;color:#8b4a4a;padding:4px 0;font-size:10px;cursor:pointer}

.hero-bg-editor{display:grid;grid-template-columns:180px 1fr;gap:18px;align-items:center}
.hero-bg-preview{
  width:190px;height:80px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#eef1f4 center/cover no-repeat;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.5);position:relative
}
.hero-bg-preview::after{content:"左上角背景预览";position:absolute;left:10px;bottom:8px;font-size:10px;color:rgba(23,32,51,.68);background:rgba(255,255,255,.72);padding:3px 6px;border-radius:6px}
.hero-bg-controls{min-width:0}
.hero-bg-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.hero-bg-help{margin:8px 0 0;color:var(--muted);font-size:11px;line-height:1.65}
.hero-bg-slider{margin-top:12px;display:grid;grid-template-columns:72px 1fr 46px;gap:10px;align-items:center}
.hero-bg-slider label,.hero-bg-slider output{font-size:11px;color:var(--muted)}
.hero-bg-slider input[type="range"]{width:100%;accent-color:var(--navy)}
.hero-bg-slider output{text-align:right;font-variant-numeric:tabular-nums}
.notice{padding:22px}
.notice-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.rule{border-top:2px solid var(--navy);padding:13px 3px 0;font-size:12px;line-height:1.7;color:#4c596a}
.notice-editor-head{display:grid;grid-template-columns:1fr 2fr;gap:10px}
.notice-editor-rules{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-top:10px}
.notice-editor-rules textarea{min-height:68px;resize:vertical}
.late{padding:22px;display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center}
.late h3{margin:0 0 6px}.late p{margin:0;color:var(--muted);font-size:13px}
.footer{margin-top:54px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:flex-end;gap:20px;color:var(--muted);font-size:11px;line-height:1.7}
.footer-signature{margin-left:auto;display:inline-flex;align-items:center;gap:10px;white-space:nowrap;position:relative;padding:3px 0 4px 38px}
.footer-signature::before{content:"";position:absolute;left:0;top:50%;width:29px;height:1px;transform:translateY(-50%);background:linear-gradient(90deg,rgba(110,67,31,0),rgba(143,88,40,.88));box-shadow:0 1px 0 rgba(255,255,255,.75)}
.footer-signature .credit-label{font-family:"Songti SC","STSong","Noto Serif CJK SC","Source Han Serif SC",serif;font-size:10.5px;font-weight:650;letter-spacing:.24em;color:#765b44;text-shadow:0 1px 0 rgba(255,255,255,.82)}
.footer-signature .credit-divider{width:1px;height:17px;background:linear-gradient(180deg,rgba(95,58,28,.18),rgba(167,107,52,.78),rgba(95,58,28,.18));box-shadow:1px 0 0 rgba(255,255,255,.72)}
.footer-signature .credit-name{font-family:"STSong","Songti SC","SimSun","Noto Serif CJK SC",serif;font-size:19px;font-weight:800;letter-spacing:.14em;line-height:.94;color:#8b5428;position:relative;transform:translateY(-1.5px);text-rendering:geometricPrecision;-webkit-font-smoothing:antialiased;text-shadow:-.45px -.45px 0 rgba(255,247,226,.92),.55px .55px 0 rgba(78,43,20,.48),0 2px 2px rgba(84,48,22,.16),0 5px 14px rgba(118,72,32,.12)}
@supports ((-webkit-background-clip:text) or (background-clip:text)){.footer-signature .credit-name{background:linear-gradient(112deg,#5f3819 0%,#8c5425 18%,#b87636 37%,#dfb26b 50%,#a7652e 65%,#74431f 82%,#5d3619 100%);-webkit-background-clip:text;background-clip:text;color:transparent;-webkit-text-stroke:.28px rgba(74,42,20,.58)}}
.modal{
  position:fixed;inset:0;background:rgba(13,20,31,.45);display:none;align-items:center;justify-content:center;
  padding:18px;z-index:20
}
.modal.open{display:flex}
.modal-card{
  width:min(980px,100%);max-height:90vh;overflow:auto;background:#fff;border-radius:20px;
  box-shadow:0 30px 100px rgba(0,0,0,.24);border:1px solid var(--line)
}
.modal-head{position:sticky;top:0;background:#fff;display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-bottom:1px solid var(--line);z-index:2}
.modal-head h3{margin:0}
.modal-body{padding:20px}
.edit-section{padding:18px 0;border-bottom:1px solid var(--line)}
.edit-section:last-child{border-bottom:0}
.edit-section h4{margin:0 0 12px;font-size:15px}
.form-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.field label{display:block;font-size:11px;color:var(--muted);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;border:1px solid #d4dae1;border-radius:9px;padding:9px 10px;background:#fff}
.edit-table{width:100%;border-collapse:collapse;font-size:12px}
.edit-table th,.edit-table td{border-bottom:1px solid var(--line);padding:7px;vertical-align:middle}
.edit-table th{text-align:left;color:var(--muted);font-weight:650}
.edit-table input,.edit-table select{width:100%;border:1px solid #d4dae1;border-radius:7px;padding:7px}
.modal-foot{position:sticky;bottom:0;background:#fff;border-top:1px solid var(--line);padding:15px 20px;display:flex;gap:8px;justify-content:flex-end}
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(20px);background:#172033;color:#fff;padding:10px 16px;border-radius:10px;font-size:12px;opacity:0;pointer-events:none;transition:.2s;z-index:30}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media(max-width:860px){
  .shell{padding:0 16px 44px}
  .topbar{height:60px}.brand small{display:none}
  .hero{grid-template-columns:1fr;gap:24px;padding:48px 0 34px;min-height:0}
  .hero-bg-layer{top:2px;left:0;width:100%;height:300px;background-position:center 35%;-webkit-mask-image:linear-gradient(90deg,#000 0%,#000 78%,rgba(0,0,0,.68) 90%,transparent 100%);mask-image:linear-gradient(90deg,#000 0%,#000 78%,rgba(0,0,0,.68) 90%,transparent 100%)}
  .hero::after{background:linear-gradient(90deg,rgba(246,245,241,.90) 0%,rgba(246,245,241,.62) 46%,rgba(246,245,241,.16) 76%,rgba(246,245,241,0) 100%),linear-gradient(180deg,rgba(246,245,241,0) 0%,rgba(246,245,241,.08) 70%,rgba(246,245,241,.92) 100%)}
  .hero-meta{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:8px;display:grid;grid-template-columns:repeat(2,1fr);gap:0 18px}
  .route-summary{grid-template-columns:1fr}
  .labs{grid-template-columns:1fr 1fr}
  .notice-grid{grid-template-columns:1fr 1fr}
  .form-grid{grid-template-columns:1fr 1fr}
  .hero-bg-editor{grid-template-columns:150px 1fr}.hero-bg-preview{width:150px;height:64px}
}
@media(max-width:560px){
  h1{font-size:42px}.actions .btn:first-child{display:none}
  .picker-grid{grid-template-columns:1fr}
  .route-summary{padding:18px}.timeline{padding:4px 18px 20px}
  .stop{grid-template-columns:52px 1fr;gap:10px}.stop-time{grid-column:2;text-align:left;margin-top:-4px}
  .labs{grid-template-columns:1fr}.notice-grid{grid-template-columns:1fr}
  .late{grid-template-columns:1fr}
  .footer{flex-direction:row;align-items:flex-end;gap:12px}.footer-signature{margin-left:auto;padding-left:28px;gap:7px}.footer-signature::before{width:21px}.footer-signature .credit-label{font-size:9px;letter-spacing:.16em}.footer-signature .credit-divider{height:14px}.footer-signature .credit-name{font-size:16px;transform:translateY(-1px)}
  .form-grid{grid-template-columns:1fr}
  .hero-bg-editor{grid-template-columns:1fr}.hero-bg-preview{width:100%;height:120px}
  .edit-table{min-width:760px}.edit-section{overflow:auto}
  .teacher-schedule-hero{grid-template-columns:1fr;padding:17px}.teacher-schedule-summary{min-width:0}
  .teacher-schedule-body{padding:0 14px 16px}.teacher-table{min-width:760px}
}

.excel-import-box{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:start;padding:14px;border:1px dashed #b9c5d2;border-radius:12px;background:#f8fafc}
.excel-import-copy b{display:block;color:var(--navy);font-size:14px;margin-bottom:6px}
.excel-import-copy p{margin:0;color:var(--muted);font-size:12px;line-height:1.65}
.excel-import-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.excel-import-options{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-top:10px;font-size:12px;color:#536172}
.excel-import-options select{border:1px solid #d4dae1;border-radius:8px;padding:7px;background:#fff}
.excel-import-status{margin-top:10px;padding:10px 12px;border-radius:10px;background:#eef4f8;color:#334155;font-size:12px;line-height:1.6;display:none}
.excel-import-status.show{display:block}
.excel-import-status.ok{background:#edf7f1;color:#285a46}
.excel-import-status.warn{background:#fff6e5;color:#7a5411}
.excel-import-status.error{background:#fdeeee;color:#8b3030}
.excel-import-status ul{margin:6px 0 0;padding-left:18px}
@media(max-width:760px){.excel-import-box{grid-template-columns:1fr}.excel-import-actions{justify-content:flex-start}.lab-meta{grid-template-columns:1fr 1fr}.notice-editor-head,.notice-editor-rules{grid-template-columns:1fr}}