*{box-sizing:border-box}
body{
  margin:0;
  font-family:Arial,Helvetica,sans-serif;
  background:#f3f6f9;
  color:#12233f
}
button,input{font-family:inherit}
.app-wrap{
  width:100%;
  max-width:1380px;
  margin:0 auto;
  padding:28px 18px 60px
}
.page-hidden{display:none!important}
.hero{
  text-align:center;
  margin-bottom:24px
}
.hero h1{
  margin:0;
  font-size:50px;
  line-height:1.15;
  color:#142644;
  font-weight:800
}
.hero h1 span{color:#1fa6e8}
.hero p{
  margin:12px 0 0;
  color:#667a93;
  font-size:19px
}
.top-row{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  flex-wrap:wrap;
  margin-bottom:22px
}
.search-box{
  position:relative;
  width:100%;
  max-width:560px
}
.search-box input{
  width:100%;
  height:54px;
  border:1px solid #d7e2eb;
  border-radius:16px;
  background:#f9fbfd;
  padding:0 18px 0 48px;
  outline:none;
  font-size:16px
}
.search-box svg{
  position:absolute;
  left:16px;
  top:50%;
  transform:translateY(-50%);
  width:19px;
  height:19px;
  stroke:#7f91a9
}
.status-text{
  display:flex;
  align-items:center;
  gap:8px;
  color:#12233f;
  font-size:18px;
  font-weight:700;
  cursor:pointer;
  user-select:none
}
.status-text svg{
  width:20px;
  height:20px;
  stroke:#12233f
}
.tabs{
  display:flex;
  gap:18px;
  flex-wrap:wrap;
  border-bottom:1px solid #dde6ee;
  margin-bottom:28px
}
.tab{
  position:relative;
  padding:0 18px 14px;
  color:#5c7089;
  font-size:18px;
  cursor:pointer
}
.tab.active{
  color:#12233f;
  font-weight:700
}
.tab.active:after{
  content:"";
  position:absolute;
  left:0;
  bottom:-1px;
  width:100%;
  height:3px;
  background:#12233f;
  border-radius:99px
}
.test-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:22px
}
.test-card{
  position:relative;
  background:#fff;
  border:1px solid #d6e0ea;
  border-radius:18px;
  padding:24px;
  min-height:230px;
  box-shadow:0 2px 10px rgba(17,35,63,.03)
}
.test-card h3{
  margin:0 0 14px;
  font-size:24px;
  font-weight:800;
  color:#12233f
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  gap:20px;
  margin-bottom:22px
}
.meta-item{
  display:flex;
  align-items:center;
  gap:8px;
  color:#64788f;
  font-size:17px
}
.meta-item svg{
  width:18px;
  height:18px;
  stroke:#71839a
}
.card-status{
  color:#64788f;
  font-size:17px;
  margin-bottom:24px
}
.card-actions{
  display:flex;
  gap:12px
}
.btn{
  border:none;
  cursor:pointer;
  transition:.2s ease;
  text-decoration:none
}
.btn-main{
  flex:1;
  height:54px;
  border-radius:14px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-size:17px;
  font-weight:700
}
.btn-exam{
  background:#f7f9fc;
  border:1px solid #d6e0ea;
  color:#12233f
}
.btn-exam:hover{background:#edf3f8}
.btn-practice{
  background:#f8fffb;
  border:1px solid #9fe6bf;
  color:#0ea26d
}
.btn-practice:hover{background:#eefcf3}
.btn-main svg{
  width:19px;
  height:19px
}
.pro-badge{
  position:absolute;
  top:20px;
  right:20px;
  background:#ff9715;
  color:#fff;
  border-radius:999px;
  padding:6px 12px;
  font-size:14px;
  font-weight:800
}

/* modal */
.modal{
  position:fixed;
  inset:0;
  background:rgba(10,20,35,.46);
  display:none;
  align-items:center;
  justify-content:center;
  z-index:99999;
  padding:18px
}
.modal.show{display:flex}
.modal-box{
  position:relative;
  width:100%;
  max-width:860px;
  max-height:92vh;
  overflow:auto;
  background:#f6f8fb;
  border-radius:22px;
  padding:22px;
  box-shadow:0 20px 70px rgba(15,28,53,.24)
}
.close-modal{
  position:absolute;
  right:14px;
  top:8px;
  border:none;
  background:transparent;
  font-size:34px;
  color:#5f738e;
  cursor:pointer
}
.modal-title{
  margin:0 0 4px;
  font-size:22px;
  font-weight:800;
  color:#15253f
}
.modal-sub{
  color:#6f829b;
  font-size:15px;
  margin-bottom:18px
}
.mode-tabs{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
  margin-bottom:18px
}
.mode-tab{
  height:48px;
  border-radius:14px;
  border:1px solid #e0e7ef;
  background:#f0f4f7;
  color:#687c95;
  font-size:17px;
  font-weight:700;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  cursor:pointer
}
.mode-tab.active{
  background:#fff;
  color:#162742;
  border-color:#d6e0ea
}
.practice-note{
  display:none;
  margin-bottom:18px;
  padding:18px 20px;
  border:1px solid #bcd5fb;
  background:#eef5ff;
  color:#2e5fd8;
  border-radius:18px;
  font-size:17px
}
.practice-note.show{display:block}
.practice-time-row{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:8px 10px;
  margin:0 0 14px;
  color:#4b607b
}
.practice-time-row label{
  font-size:14px;
  font-weight:700
}
.practice-time-row input{
  width:84px;
  height:34px;
  border:1px solid #d7e2eb;
  border-radius:10px;
  padding:0 10px;
  background:#fff
}
.practice-time-row small{
  font-size:12px;
  color:#6b8099
}
.option-card{
  background:#fff;
  border:1px solid #d6e1eb;
  border-radius:18px;
  padding:20px;
  margin-bottom:18px
}
.option-card.primary{border-color:#a9daf7}
.option-head{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:14px;
  flex-wrap:wrap
}
.option-left{
  display:flex;
  gap:14px
}
.icon-box{
  width:52px;
  height:52px;
  border-radius:16px;
  display:flex;
  align-items:center;
  justify-content:center;
  flex:0 0 52px
}
.icon-blue{background:#e8f6ff}
.icon-green{background:#eaf9ef}
.icon-box svg{width:24px;height:24px}
.icon-blue svg{stroke:#18a8e1}
.icon-green svg{stroke:#20c569}
.option-title{
  margin:2px 0 8px;
  font-size:18px;
  font-weight:800
}
.option-desc{
  color:#667991;
  font-size:16px;
  margin-bottom:14px
}
.pills{
  display:flex;
  flex-wrap:wrap;
  gap:10px
}
.pill{
  min-height:30px;
  padding:0 14px;
  border-radius:999px;
  background:#edf2f7;
  color:#1298df;
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:16px;
  font-weight:700
}
.pill svg{width:15px;height:15px;stroke:#1298df}
.start-btn{
  min-width:138px;
  height:44px;
  border:none;
  border-radius:14px;
  background:#1ca4ea;
  color:#fff;
  font-size:17px;
  font-weight:800;
  cursor:pointer;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px
}
.start-btn:disabled{
  background:#8fd0f4;
  cursor:not-allowed
}
.start-btn.btn-outline{
  background:#fff;
  color:#1577b9;
  border:2px solid #1ca4ea
}
.section-label{
  margin:16px 0 10px;
  font-size:15px;
  font-weight:800;
  color:#61748d
}
.part-list{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px
}
.part-item{
  min-height:48px;
  border:1px solid #d7e2eb;
  background:#fff;
  border-radius:16px;
  padding:0 14px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  cursor:pointer;
  transition:.2s ease
}
.part-item:hover{border-color:#9dd2f6}
.part-item.selected{
  border-color:#93d0f7;
  background:#f3fbff
}
.part-left{
  display:flex;
  align-items:center;
  gap:10px
}
.radio-dot{
  width:22px;
  height:22px;
  border-radius:50%;
  border:1.8px solid #28a4ee;
  position:relative
}
.part-item.selected .radio-dot:after{
  content:"";
  position:absolute;
  left:50%;
  top:50%;
  transform:translate(-50%,-50%);
  width:10px;
  height:10px;
  border-radius:50%;
  background:#28a4ee
}
.part-name{font-size:17px}
.part-count{font-size:16px;color:#687c95}
.full-width{grid-column:1/-1}
.hidden{display:none!important}

.home-progress-panel{
  padding:8px 0 28px
}
.home-progress-panel .progress-head{
  font-size:20px;
  font-weight:800;
  color:#12233f;
  margin:0 0 6px
}
.home-progress-panel .progress-note{
  font-size:14px;
  color:#5c7089;
  margin:0 0 16px;
  max-width:720px;
  line-height:1.45
}
.home-progress-panel .progress-rows{
  display:flex;
  flex-direction:column;
  gap:10px
}
.home-progress-panel .progress-row{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  padding:12px 14px;
  border:1px solid #d6e0ea;
  border-radius:12px;
  background:#fff
}
.home-progress-panel .progress-row h4{
  margin:0;
  font-size:17px;
  font-weight:800;
  color:#12233f
}
.home-progress-panel .progress-status{
  font-size:14px;
  color:#61748d;
  font-weight:600;
  white-space:pre-wrap;
  text-align:right
}

/* exam page */
.exam-shell{
  width:100%;
  max-width:1380px;
  margin:0 auto;
  padding:12px 12px 30px
}
.exam-topbar{
  background:#1f6fb6;
  color:#fff;
  border-radius:14px 14px 0 0;
  min-height:58px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:10px 16px
}
.exam-top-left,.exam-top-right{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap
}
.exam-chip{
  min-height:34px;
  padding:0 12px;
  border-radius:999px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  background:rgba(255,255,255,.14);
  color:#fff;
  font-size:14px;
  font-weight:700
}
.exam-quit{
  background:#ffd25b;
  color:#534100;
  border:none;
  border-radius:10px;
  height:36px;
  padding:0 14px;
  font-weight:800;
  cursor:pointer
}
.exam-main{
  border:1px solid #d6e0ea;
  border-top:none;
  background:#fff;
  min-height:calc(100vh - 120px);
  display:grid;
  grid-template-columns:42% 58%
}
.exam-left{
  border-right:1px solid #e3eaf1;
  background:#fbfdff;
  padding:18px
}
.exam-right{
  padding:18px
}
.exam-image-wrap{
  width:100%;
  max-width:520px;
  margin:0 auto;
  background:#f1f4f8;
  border-radius:12px;
  overflow:hidden;
  border:1px solid #dde6ee
}
.exam-image-wrap.is-hidden{
  display:none!important
}
.exam-image-wrap img{
  width:100%;
  display:block;
  aspect-ratio:4/3;
  object-fit:contain;
  background:#fff
}
.audio-wrap{
  margin:0 auto 14px;
  width:100%;
  max-width:520px
}
.audio-wrap-top{
  max-width:none;
  margin:10px 0 14px;
  padding:0 14px
}
.audio-wrap.is-hidden{
  display:none!important
}
.audio-wrap audio{
  width:100%
}
.exam-question-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:10px;
  flex-wrap:wrap
}
.exam-question-head h2{
  margin:0;
  font-size:20px;
  color:#162742
}
.progress-bar{
  width:100%;
  height:10px;
  background:#e8eef4;
  border-radius:999px;
  overflow:hidden;
  margin:12px 0 18px
}
.progress-fill{
  height:100%;
  width:0%;
  background:#23a6ea;
  border-radius:999px;
  transition:.25s ease
}
.question-box{
  background:#fbfdff;
  border:1px solid #dde6ef;
  border-radius:16px;
  padding:18px;
  margin-bottom:18px
}
.question-label{
  color:#6f829b;
  font-size:14px;
  font-weight:700;
  margin-bottom:8px
}
.question-text{
  font-size:18px;
  line-height:1.5;
  color:#162742;
  font-weight:700
}
.answers{
  display:grid;
  gap:12px
}
.answer-item{
  border:1px solid #d7e2eb;
  border-radius:14px;
  min-height:54px;
  padding:0 16px;
  display:flex;
  align-items:center;
  gap:12px;
  cursor:pointer;
  transition:.2s ease;
  background:#fff
}
.answer-item:hover{border-color:#9fd3f6;background:#f9fcff}
.answer-item.selected{
  border-color:#2aa8ef;
  background:#eef8ff
}
.answer-item.correct{
  border-color:#2fc56e;
  background:#edfdf4
}
.answer-item.wrong{
  border-color:#f05353;
  background:#fff0f0
}
.answer-letter{
  width:30px;
  height:30px;
  border-radius:50%;
  background:#f1f5f9;
  color:#3d526e;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:800;
  font-size:14px;
  flex:0 0 30px
}
.answer-text{
  font-size:17px;
  color:#16304d
}
.explain-box{
  margin-top:16px;
  padding:16px;
  border-radius:14px;
  border:1px solid #cfe2fb;
  background:#f3f8ff;
  color:#315fda;
  display:none;
  font-size:16px;
  line-height:1.5;
  white-space:pre-line
}
.explain-box.show{display:block}
.exam-nav{
  margin-top:18px;
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap
}
.nav-btn{
  min-width:130px;
  height:46px;
  border-radius:12px;
  font-size:16px;
  font-weight:800;
  border:1px solid #d7e2eb;
  background:#fff;
  color:#162742;
  cursor:pointer
}
.nav-btn.primary{
  background:#1da4ea;
  color:#fff;
  border:none
}
.nav-btn:disabled{
  opacity:.5;
  cursor:not-allowed
}
.nav-btn.nav-btn-arrow{
  min-width:52px;
  padding-inline:12px;
  font-size:1.45rem;
  line-height:1
}
.qdrawer-backdrop{
  position:fixed;
  inset:0;
  background:rgba(11,18,32,.45);
  opacity:0;
  pointer-events:none;
  transition:.2s ease;
  z-index:50
}
.qdrawer-backdrop.show{
  opacity:1;
  pointer-events:auto
}
.qdrawer{
  position:fixed;
  top:0;
  right:0;
  height:100vh;
  width:min(420px, 92vw);
  background:#ffffff;
  border-left:1px solid #dbe6f0;
  transform:translateX(100%);
  transition:.22s ease;
  z-index:60;
  display:flex;
  flex-direction:column
}
.qdrawer.show{transform:translateX(0)}
.qdrawer-head{
  padding:14px 14px 10px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  border-bottom:1px solid #e7eff7
}
.qdrawer-title{
  font-weight:900;
  color:#162742
}
.qdrawer-close{
  width:38px;
  height:38px;
  border-radius:12px;
  border:1px solid #d7e2eb;
  background:#fff;
  font-size:22px;
  cursor:pointer;
  line-height:1
}
.qdrawer-meta{
  padding:10px 14px;
  color:#526a86;
  font-size:14px;
  border-bottom:1px solid #eef4fa
}
.qdrawer-grid{
  flex:1;
  min-height:0;
  padding:14px;
  overflow:auto;
  display:flex;
  flex-direction:column;
  gap:12px
}
.qdrawer-section-label{
  font-weight:800;
  font-size:12px;
  color:#5a6f8a;
  letter-spacing:.06em;
  text-transform:uppercase;
  padding-top:2px
}
.qdrawer-section-label:first-child{padding-top:0}
.qdrawer-section-grid{
  display:grid;
  grid-template-columns:repeat(8, minmax(0, 1fr));
  gap:8px
}
.qbtn{
  height:36px;
  border-radius:10px;
  border:1px solid #d7e2eb;
  background:#fff;
  cursor:pointer;
  font-weight:900;
  color:#162742
}
.qbtn.is-current{
  outline:3px solid rgba(29,164,234,.22);
  border-color:#1da4ea
}
.qbtn.is-answered{
  background:#eaf7ff;
  border-color:#9fd3f6
}
.qbtn.is-unanswered{
  background:#fff
}
.qbtn.is-correct{
  background:#eaf7ef;
  border-color:#8ed3a5
}
.qbtn.is-wrong{
  background:#fff0f0;
  border-color:#ffb4b4
}
.result-box{
  margin-top:18px;
  padding:18px;
  border-radius:16px;
  background:#f8fbfe;
  border:1px solid #d8e4ee;
  display:none
}
.result-box.show{display:block}
.result-title{
  font-size:22px;
  font-weight:800;
  margin-bottom:12px
}
.result-score{
  font-size:18px;
  color:#17304c;
  margin-bottom:10px
}
#resultPageDetails{
  display:flex;
  flex-direction:column;
  gap:14px;
  margin-top:4px
}
.result-page-hint{
  margin:0;
  font-size:14px;
  color:#5a6f8a;
  line-height:1.45
}
.result-legend{
  display:flex;
  flex-wrap:wrap;
  gap:14px 20px;
  align-items:center;
  font-size:13px;
  font-weight:700;
  color:#3e5671
}
.result-legend-item{
  display:inline-flex;
  align-items:center;
  gap:8px
}
.result-dot{
  width:14px;
  height:14px;
  border-radius:6px;
  border:1px solid #c9d6e4;
  flex-shrink:0
}
.result-dot.is-correct{
  background:#d8f0df;
  border-color:#8ed3a5
}
.result-dot.is-wrong{
  background:#ffe4e4;
  border-color:#ffb4b4
}
.result-dot.is-unanswered{
  background:#fff;
  border-color:#d7e2eb
}
.result-grid-scroll{
  display:flex;
  flex-direction:column;
  gap:12px
}
.result-part-grid .result-qcell{
  min-height:40px
}
.result-qcell{
  height:40px;
  border-radius:10px;
  border:1px solid #d7e2eb;
  background:#fff;
  cursor:pointer;
  font-weight:900;
  font-size:14px;
  color:#162742;
  transition:border-color .15s ease, box-shadow .15s ease, background .15s ease
}
.result-qcell.is-correct{
  background:#eaf7ef;
  border-color:#8ed3a5;
  color:#1a5c2e
}
.result-qcell.is-wrong{
  background:#fff5f5;
  border-color:#ffb4b4;
  color:#8b1c1c
}
.result-qcell.is-unanswered{
  background:#fafbfc;
  border-color:#dbe4ed;
  color:#7a8fa3
}
.result-qcell.is-active{
  outline:3px solid rgba(29,164,234,.35);
  border-color:#1da4ea;
  box-shadow:0 0 0 1px rgba(29,164,234,.2)
}
.result-qcell:focus-visible{
  outline:3px solid rgba(29,164,234,.45);
  outline-offset:2px
}
.result-explain-panel{
  padding:16px 18px;
  border-radius:14px;
  border:1px solid #d8e4ee;
  background:#f8fbfe
}
.result-explain-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin-bottom:10px
}
.result-explain-num{
  font-weight:900;
  font-size:17px;
  color:#162742
}
.result-explain-badge{
  font-size:12px;
  font-weight:800;
  padding:4px 10px;
  border-radius:999px;
  letter-spacing:.02em
}
.result-explain-badge.ok{
  background:#d8f0df;
  color:#1a5c2e
}
.result-explain-badge.bad{
  background:#ffe4e4;
  color:#8b1c1c
}
.result-explain-choices{
  display:flex;
  flex-wrap:wrap;
  gap:10px 20px;
  font-size:14px;
  color:#3e5671;
  margin-bottom:12px
}
.result-explain-body{
  font-size:15px;
  line-height:1.55;
  color:#1a2b3f
}
.result-explain-subtitle{
  font-size:13px;
  font-weight:800;
  color:#5a6f8a;
  margin-bottom:6px;
  text-transform:uppercase;
  letter-spacing:.04em
}
.result-explain-english{
  margin-bottom:12px;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid #dbe7f2;
  background:#ffffff
}
.result-en-question{
  font-size:15px;
  line-height:1.6;
  color:#162742;
  margin-bottom:8px
}
.result-en-answers{
  display:flex;
  flex-direction:column;
  gap:8px
}
.result-en-answer{
  font-size:14px;
  line-height:1.55;
  color:#1a2b3f;
  padding:8px 10px;
  border-radius:8px;
  border:1px solid #e4ecf4;
  background:#f9fbfd
}
.result-en-answer.is-correct{
  border-color:#8ed3a5;
  background:#eaf7ef
}
.result-en-answer.is-user-wrong{
  border-color:#ffb4b4;
  background:#fff2f2
}
.result-en-answer.is-user-correct{
  box-shadow:0 0 0 1px rgba(29,164,234,.22)
}
.part-tag{
  display:inline-block;
  background:#edf4fa;
  color:#3e5671;
  border-radius:999px;
  padding:6px 12px;
  font-size:13px;
  font-weight:700;
  margin-bottom:10px
}

@media (max-width:1100px){
  .test-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .exam-main{grid-template-columns:1fr}
  .exam-left{border-right:none;border-bottom:1px solid #e3eaf1}
}
@media (max-width:767px){
  .hero h1{font-size:34px}
  .hero p{font-size:16px}
  .test-grid{grid-template-columns:1fr}
  .card-actions{flex-direction:column}
  .mode-tabs{grid-template-columns:1fr}
  .part-list{grid-template-columns:1fr}
  .exam-shell{padding:0}
  .exam-topbar{border-radius:0}
  .exam-main{min-height:auto}
}