:root{
  --blue:#2563eb; --blue-d:#1d4ed8; --teal:#0d9488; --amber:#d97706;
  --bg:#f1f5f9; --card:#fff; --txt:#0f172a; --sub:#64748b; --line:#e2e8f0;
  --ok:#16a34a; --warn:#f59e0b; --bad:#dc2626; --soft:#eff6ff;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","WenQuanYi Micro Hei",sans-serif;
  background:var(--bg); color:var(--txt); line-height:1.6; font-size:15px;
}
.wrap{max-width:720px;margin:0 auto;padding:0 14px}
a{color:var(--blue)}

/* ===== topbar ===== */
.topbar{background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff;padding:26px 0 22px}
.topbar-sm{padding:20px 0 18px}
.topbar .brand{font-size:11px;letter-spacing:.18em;opacity:.75;font-weight:700}
.topbar h1{margin:6px 0 2px;font-size:23px;letter-spacing:.5px}
.topbar p{margin:0;font-size:13px;opacity:.9}
.report-head{background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff;padding:26px 0 22px}
.report-brand{font-size:11px;letter-spacing:.18em;opacity:.75;font-weight:700}
.report-head h1{margin:6px 0 2px;font-size:23px}
.report-head p{margin:0;font-size:13px;opacity:.9}

/* ===== screen ===== */
.screen{display:none;padding-bottom:40px}
.screen.active{display:block}
.screen:first-child{min-height:100vh}

/* ===== stepbar ===== */
.stepbar{display:flex;align-items:center;margin:16px 0 14px}
.stepbar .dot{width:24px;height:24px;border-radius:50%;background:#fff;border:2px solid var(--line);
  color:var(--sub);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.stepbar .dot.active{border-color:var(--blue);color:var(--blue)}
.stepbar .dot.done{background:var(--ok);border-color:var(--ok);color:#fff}
.stepbar .line{flex:1;height:2px;background:var(--line);margin:0 6px}
.stepbar .line.done{background:var(--ok)}
.steptxt{font-size:12px;color:var(--sub);margin:6px 0 0;flex:0 0 auto}

/* ===== card ===== */
.card{background:var(--card);border-radius:14px;padding:16px;margin:12px 0;box-shadow:0 2px 10px rgba(15,23,42,.05)}
.card h2{margin:0 0 4px;font-size:17px}
.card .sub{margin:0 0 12px;font-size:12.5px;color:var(--sub)}
.sec-title{font-weight:700;font-size:14px;margin-bottom:8px;color:var(--blue)}
.card-tip{background:#fffbeb;border:1px solid #fde68a}
.card-cta{background:var(--soft);border:1px solid #bfdbfe}

/* ===== preset list ===== */
.preset-list{display:flex;flex-direction:column;gap:10px}
.preset-item{border:2px solid var(--line);border-radius:12px;padding:13px 14px;cursor:pointer;transition:.15s;background:#fff}
.preset-item:hover{border-color:var(--blue)}
.preset-item.on{border-color:var(--blue);background:var(--soft)}
.preset-item .p-label{font-weight:700;font-size:16px;display:flex;align-items:center;gap:8px}
.preset-item .p-label .ic{font-size:18px}
.preset-item .p-tip{font-size:12.5px;color:var(--sub);margin-top:4px}
.preset-item.custom{border-style:dashed;background:#fafafa}
.preset-item.custom .p-label{color:var(--sub)}

/* ===== chip / list ===== */
.chip-list{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 14px}
.chip{background:var(--soft);color:var(--blue);border:1px solid #bfdbfe;border-radius:20px;padding:5px 12px;font-size:13px;font-weight:600}
.chip.sub{background:#f0fdfa;color:var(--teal);border-color:#99f6e4}
.chip.sub2{background:#fffbeb;color:var(--amber);border-color:#fde68a}

.subject-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.subject-chip{display:flex;align-items:center;gap:6px;border:2px solid var(--line);border-radius:12px;padding:9px 14px;cursor:pointer;font-weight:600;font-size:14px;background:#fff}
.subject-chip.on{color:#fff;border-color:transparent}
.subject-chip[data-sub="math"].on{background:var(--blue)}
.subject-chip[data-sub="physics"].on{background:var(--teal)}
.subject-chip[data-sub="chem"].on{background:var(--amber)}
.subject-chip .ic{font-size:16px}

.grade-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:6px}
.grade-chip{border:1px solid var(--line);border-radius:8px;padding:6px 13px;cursor:pointer;font-size:13px;background:#fff;color:var(--sub)}
.grade-chip.on{background:var(--txt);color:#fff;border-color:var(--txt)}

.scope-actions{margin-top:16px}
.hint{font-size:12px;color:var(--sub);text-align:center;margin:8px 0 0}

/* ===== module tree ===== */
.mod-group{margin-top:14px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.mod-group-head{display:flex;align-items:center;gap:10px;padding:11px 13px;background:#f8fafc;cursor:pointer;border-bottom:1px solid var(--line)}
.mod-group-head .mch-check{width:20px;height:20px;border-radius:5px;border:2px solid var(--line);display:flex;align-items:center;justify-content:center;flex:0 0 auto;color:#fff;font-size:12px}
.mod-group.on .mod-group-head .mch-check{background:var(--blue);border-color:var(--blue)}
.mod-group-head .mch-name{font-weight:700;font-size:14.5px;flex:1}
.mod-group-head .mch-toggle{font-size:12px;color:var(--sub)}
.mod-group.on .mod-group-head{background:var(--soft)}
.mod-group .kp-list{display:none;padding:6px 10px 10px}
.mod-group.open .kp-list{display:block}
.kp-item{display:flex;align-items:center;gap:9px;padding:7px 8px;border-radius:7px;font-size:13px;cursor:pointer}
.kp-item:hover{background:#f8fafc}
.kp-item .kp-check{width:17px;height:17px;border-radius:4px;border:2px solid var(--line);display:flex;align-items:center;justify-content:center;flex:0 0 auto;color:#fff;font-size:11px}
.kp-item.on .kp-check{background:var(--teal);border-color:var(--teal)}

/* ===== progress ===== */
.progress-box{background:#fff;border-bottom:1px solid var(--line);padding:12px 0 14px;position:sticky;top:0;z-index:20}
.progress-head{display:flex;justify-content:space-between;font-size:13px;margin-bottom:7px}
.progress-head #prog-text{font-weight:600}
.progress-bar{height:8px;background:var(--line);border-radius:6px;overflow:hidden}
.progress-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--teal));transition:width .3s}

/* ===== form ===== */
.info-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.field{display:flex;flex-direction:column;gap:4px}
.field.full{grid-column:1/-1}
.field label{font-size:12px;color:var(--sub);font-weight:600}
.field input{height:38px;border:1px solid var(--line);border-radius:9px;padding:0 11px;font-size:14px;outline:none;background:#fff}
.field input:focus{border-color:var(--blue)}
.q-block{margin-bottom:14px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.q-head{display:flex;justify-content:space-between;align-items:center;padding:10px 13px;background:#f8fafc;border-bottom:1px solid var(--line);cursor:pointer}
.q-head .qh-name{font-weight:700;font-size:14.5px}
.q-head .qh-toggle{font-size:12px;color:var(--sub)}
.q-head .qh-sub{font-size:11.5px;color:var(--sub);font-weight:400;margin-top:2px}
.q-items{padding:10px 8px}
.q-row{display:grid;grid-template-columns:44px 1fr;gap:8px;align-items:start;padding:6px 5px;border-bottom:1px dashed var(--line)}
.q-row:last-child{border-bottom:none}
.q-no{font-weight:700;font-size:13.5px;color:var(--sub);padding-top:2px}
.q-body{flex:1}
.q-meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-bottom:5px}
.q-meta .qt{font-size:11.5px;font-weight:600;color:var(--txt)}
.tag{font-size:10.5px;padding:1.5px 7px;border-radius:10px;background:#f1f5f9;color:var(--sub);border:1px solid var(--line)}
.tag.base{background:#f0fdf4;color:#15803d;border-color:#bbf7d0}
.tag.mid{background:#fffbeb;color:#b45309;border-color:#fde68a}
.tag.hard{background:#fef2f2;color:#b91c1c;border-color:#fecaca}
.score-btns{display:flex;gap:6px}
.sbtn{flex:1;min-height:36px;border:1.5px solid var(--line);border-radius:8px;background:#fff;font-size:12.5px;cursor:pointer;transition:.12s;color:var(--sub)}
.sbtn:hover{border-color:var(--blue)}
.sbtn.on{background:var(--blue);border-color:var(--blue);color:#fff;font-weight:600}
.sbtn.on.s2{background:var(--teal);border-color:var(--teal)}
.sbtn.on.s3{background:var(--amber);border-color:var(--amber)}
.q-detail{display:none;padding:6px 0 2px 2px}
.q-block.open .q-detail{display:block}
.q-detail label{font-size:12px;color:var(--sub);display:block;margin:4px 0 3px}
.q-detail select,.q-detail input{width:100%;height:34px;border:1px solid var(--line);border-radius:7px;padding:0 9px;font-size:13px;outline:none;background:#fff;margin-bottom:4px}

/* ===== buttons ===== */
.btn{width:100%;height:48px;border:none;border-radius:12px;font-size:15.5px;font-weight:700;cursor:pointer;transition:.15s}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff}
.btn-primary:active{transform:scale(.98)}
.btn-primary:disabled{opacity:.45;cursor:not-allowed}
.btn-ghost{background:#fff;color:var(--sub);border:1px solid var(--line);height:42px;font-size:14px;margin-top:10px}
.btn-ghost:active{background:#f1f5f9}

/* ===== report ===== */
.score-card{background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff;border-radius:16px;padding:18px;margin:14px 0;box-shadow:0 6px 20px rgba(37,99,235,.25)}
.score-row{display:flex;align-items:center;justify-content:space-between;gap:14px}
.score-label{font-size:13px;opacity:.85}
.score-num{font-size:40px;font-weight:800;line-height:1.1}
.score-num em{font-size:17px;font-weight:600;opacity:.7;font-style:normal}
.score-rate{font-size:13px;opacity:.9;margin-top:4px}
.score-rate b{font-size:15px}
.score-level{text-align:right}
.level-badge{display:inline-block;background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.5);border-radius:10px;padding:7px 14px;font-size:17px;font-weight:800}
.level-desc{font-size:12px;opacity:.9;margin-top:5px;max-width:130px}
.score-row2{margin-top:16px;padding-top:14px;border-top:1px solid rgba(255,255,255,.25);display:flex;gap:8px}
.diff-box{flex:1;text-align:center}
.diff-label{font-size:11px;opacity:.85}
.diff-num{font-size:19px;font-weight:800;margin:2px 0}
.diff-state{font-size:10.5px;font-weight:700}
.diff-state.good{color:rgba(134,239,172,.95)}
.diff-state.warn{color:rgba(253,230,138,.95)}
.diff-state.bad{color:rgba(252,165,165,.95)}
.chart-box{position:relative;margin:12px 0}
.chart-box canvas{max-width:100%!important}
#module-table{margin-top:10px}
.mod-row{display:grid;grid-template-columns:1fr 46px;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid var(--line);font-size:13px}
.mod-row .mr-bar{grid-column:1/-1;margin-top:5px}
.mod-row:last-child{border-bottom:none}
.mod-row .mr-name{font-weight:600}
.mod-row .mr-rate{text-align:right;font-weight:700}
.mod-row .mr-bar{height:7px;background:var(--line);border-radius:5px;overflow:hidden}
.mod-row .mr-bar i{display:block;height:100%;border-radius:5px}
.mr-bar i.good{background:var(--ok)}
.mr-bar i.midc{background:var(--warn)}
.mr-bar i.bad{background:var(--bad)}

.weak-item{border:1px solid var(--line);border-left:4px solid var(--bad);border-radius:10px;padding:11px 13px;margin-bottom:9px}
.weak-item.warn{border-left-color:var(--warn)}
.weak-item .wi-head{display:flex;justify-content:space-between;align-items:center}
.weak-item .wi-name{font-weight:700;font-size:14px}
.weak-item .wi-rate{font-weight:800;color:var(--bad);font-size:15px}
.weak-item.warn .wi-rate{color:var(--warn)}
.weak-item .wi-sub{font-size:12px;color:var(--sub);margin-top:4px}
.weak-item .wi-action{font-size:12.5px;margin-top:7px;padding-top:7px;border-top:1px dashed var(--line)}
.weak-item .wi-action b{color:var(--blue)}

.loss-item{display:grid;grid-template-columns:24px 1fr 54px;gap:8px;align-items:center;padding:8px 0;border-bottom:1px solid var(--line);font-size:13px}
.loss-item:last-child{border-bottom:none}
.loss-item .li-rank{width:22px;height:22px;border-radius:50%;background:var(--soft);color:var(--blue);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center}
.loss-item .li-name{font-weight:600}
.loss-item .li-tag{font-size:10.5px;color:var(--sub);font-weight:400}
.loss-item .li-val{text-align:right;font-weight:700;color:var(--bad)}

.plan-item{display:flex;gap:11px;padding:11px 0;border-bottom:1px solid var(--line)}
.plan-item:last-child{border-bottom:none}
.plan-item .pi-no{flex:0 0 auto;width:24px;height:24px;border-radius:7px;background:var(--blue);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}
.plan-item .pi-body .pi-t{font-weight:700;font-size:14px;margin-bottom:2px}
.plan-item .pi-body .pi-d{font-size:12.5px;color:var(--sub)}

.studio-box{margin-top:14px;padding:12px 14px;background:#fff;border:1px solid var(--line);border-radius:11px;font-size:13px;line-height:1.9}
.studio-box .sb-name{font-weight:800;font-size:15px;color:var(--blue)}
.report-actions{margin-top:16px}

ul.trend{margin:0;padding-left:18px}
ul.trend li{font-size:12.5px;color:#475569;margin-bottom:6px}
ul.trend li b{color:var(--txt)}

.toast{position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(20px);background:rgba(15,23,42,.92);color:#fff;padding:11px 20px;border-radius:10px;font-size:13.5px;opacity:0;pointer-events:none;transition:.25s;z-index:99;max-width:86vw;text-align:center}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

@media(max-width:420px){
  .topbar h1,.report-head h1{font-size:20px}
  .score-num{font-size:34px}
  .info-grid{grid-template-columns:1fr}
  .q-row{grid-template-columns:38px 1fr}
  .q-meta .qt{font-size:11px}
  .mod-row{grid-template-columns:1fr 46px 60px}
}
@media print{
  .screen{display:none!important}
  .screen.active{display:block!important}
  .topbar,.progress-box,.stepbar,.report-actions,.btn,.toast{display:none!important}
  body{background:#fff}
  .card{box-shadow:none;border:1px solid #ddd}
}