:root{
  --explore-bg:#eef8f3;
  --explore-card:#fffef8;
  --explore-card-2:#f7fffb;
  --explore-ink:#183f3a;
  --explore-muted:#52706a;
  --explore-line:#bee4d8;
  --explore-strong:#18a678;
  --explore-strong-2:#0b7e64;
  --explore-soft:#e6f6ff;
  --explore-warn:#fff5d7;
  --explore-bad:#fff1ec;
}
*{box-sizing:border-box}
body.v218-explore-page{
  margin:0;
  min-height:100dvh;
  color:var(--explore-ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
  background:
    radial-gradient(circle at 16% 14%, rgba(255,235,150,.48), transparent 28%),
    radial-gradient(circle at 88% 12%, rgba(127,224,196,.45), transparent 26%),
    linear-gradient(180deg,#ecfbf6 0%,#fff8d9 100%);
}
body.v218-explore-page .app-fullscreen-fab,
body.v218-explore-page .bottom-nav{display:none!important}
.explore-pad-app{
  width:min(1180px, calc(100vw - 28px));
  min-height:100dvh;
  margin:0 auto;
  padding:14px 0 16px;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.explore-pad-topbar{
  flex:0 0 auto;
  min-height:70px;
  border:1px solid rgba(126,196,180,.55);
  border-radius:28px;
  background:rgba(255,255,255,.82);
  box-shadow:0 18px 34px rgba(26,106,88,.12);
  backdrop-filter: blur(12px);
  padding:10px 12px;
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:12px;
}
.explore-pad-back,
.explore-pad-farm,
.explore-pad-top-action{
  min-height:48px;
  border:0;
  border-radius:999px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:0 18px;
  font-size:17px;
  font-weight:900;
  text-decoration:none;
  color:#18423b;
  background:#e8f6ff;
  box-shadow:inset 0 -2px 0 rgba(7,66,67,.08);
  white-space:nowrap;
}
.explore-pad-farm{background:#fff0be}
.explore-pad-top-action{background:#e5fff1; cursor:pointer}
.explore-pad-title{
  min-width:0;
  display:flex;
  align-items:center;
  gap:12px;
}
.explore-pad-icon{
  width:54px;height:54px;
  border-radius:20px;
  display:grid;place-items:center;
  font-size:30px;
  background:linear-gradient(145deg,#e4fff2,#e8f4ff);
  box-shadow:inset 0 -2px 0 rgba(0,0,0,.05);
  flex:0 0 auto;
}
.explore-pad-title h1{margin:0;font-size:25px;line-height:1.05;letter-spacing:-.02em}
.explore-pad-title p{margin:5px 0 0;color:var(--explore-muted);font-size:14px;font-weight:800}
.explore-pad-actions{display:flex;align-items:center;gap:10px}
.explore-pad-stage{
  flex:1 1 auto;
  min-height:0;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:14px;
}
.explore-pad-card{
  min-width:0;
  min-height:0;
  border:2px solid rgba(159,220,204,.7);
  border-radius:32px;
  background:linear-gradient(180deg,rgba(255,255,255,.96),rgba(255,252,230,.92));
  box-shadow:0 18px 34px rgba(24,94,76,.12);
  padding:22px;
  display:flex;
  flex-direction:column;
  gap:14px;
  overflow:hidden;
}
.explore-pad-left{background:linear-gradient(180deg,#fffdf4,#fff9df)}
.explore-pad-right{background:linear-gradient(180deg,#ffffff,#f2fff7)}
.explore-pad-pill{
  align-self:flex-start;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 14px;
  border-radius:999px;
  background:#e9f7ff;
  color:#19433e;
  font-size:15px;
  font-weight:900;
}
.explore-pad-question-title{
  margin:0;
  font-size:clamp(27px,3.1vw,46px);
  line-height:1.05;
  letter-spacing:-.04em;
}
.explore-pad-phenomenon{
  flex:0 1 auto;
  margin:0;
  padding:18px 20px;
  border-radius:26px;
  background:rgba(255,255,255,.72);
  color:#234d47;
  font-size:clamp(19px,2vw,26px);
  line-height:1.52;
  font-weight:850;
  box-shadow:inset 0 0 0 1px rgba(193,224,215,.72);
}
.explore-pad-observe{
  flex:1 1 auto;
  min-height:0;
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:10px;
}
.explore-pad-step{
  min-width:0;
  border:1px dashed rgba(108,189,164,.75);
  border-radius:22px;
  background:rgba(244,255,249,.78);
  padding:14px 12px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:8px;
}
.explore-pad-step b{font-size:15px;color:#0c745e}
.explore-pad-step span{font-size:16px;line-height:1.35;font-weight:850;color:#284f49}
.explore-pad-mini-title{
  margin:0;
  font-size:26px;
  line-height:1.1;
  letter-spacing:-.02em;
}
.explore-pad-ask{
  margin:0;
  padding:16px 18px;
  border-radius:24px;
  background:#fffdf7;
  font-size:clamp(20px,2.1vw,29px);
  line-height:1.35;
  font-weight:950;
  box-shadow:inset 0 0 0 1px rgba(210,232,224,.8);
}


.explore-pad-app{position:relative}
.explore-pad-action-primary{background:#ffd94e;color:#123f3a;box-shadow:inset 0 -2px 0 rgba(125,80,0,.12)}
.explore-pad-action-light{background:#eef8ff;color:#193f3b;box-shadow:inset 0 0 0 2px rgba(20,62,73,.82), inset 0 -2px 0 rgba(7,66,67,.05)}
.explore-pad-action-warn{background:#ffd94e;color:#123f3a;box-shadow:inset 0 -2px 0 rgba(125,80,0,.12)}
.explore-pad-right-head{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:40px;}
.explore-pad-level-badge{display:inline-flex;align-items:center;justify-content:center;min-height:40px;min-width:78px;padding:0 18px;border-radius:999px;background:#f2fbff;color:#21514c;font-size:18px;font-weight:950;box-shadow:inset 0 0 0 2px rgba(190,224,244,.95);white-space:nowrap;}
.explore-pad-picker{position:absolute;right:12px;top:82px;width:min(520px,calc(100vw - 36px));z-index:75;background:rgba(255,255,255,.98);border:2px solid #cfe9ff;border-radius:24px;padding:14px;box-shadow:0 22px 54px rgba(21,90,128,.20);}
.explore-pad-picker[hidden]{display:none!important}
.explore-pad-picker-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;gap:12px;}
.explore-pad-picker-head strong{font-size:21px;line-height:1.1;color:#143f3a;}
.explore-pad-picker-head button{border:0;background:#f4fbff;border-radius:15px;min-height:40px;padding:0 14px;font-weight:950;color:#16446a;cursor:pointer;}
.explore-pad-picker-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;}
.explore-pad-picker-option{min-height:86px;text-align:left;border:2px solid #d9ecfb;background:#fff;border-radius:18px;padding:13px;display:flex;flex-direction:column;justify-content:center;gap:7px;cursor:pointer;color:#143f3a;}
.explore-pad-picker-option strong{font-size:20px;line-height:1.05;color:#103c37;}
.explore-pad-picker-option span{font-size:14px;color:#5a7488;line-height:1.25;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.explore-pad-picker-option.active{background:#eafff0;border-color:#58ce7c;}

.explore-pad-choice-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:12px;
}
.explore-pad-choice-grid[data-count="3"]{grid-template-columns:1fr}
.explore-pad-choice{
  width:100%;
  min-height:72px;
  border:0;
  border-radius:24px;
  background:#ffffff;
  color:#193f3b;
  font-size:clamp(20px,2vw,25px);
  line-height:1.12;
  font-weight:950;
  padding:12px 14px;
  box-shadow:0 10px 18px rgba(23,108,85,.12), inset 0 0 0 1px rgba(197,226,218,.85);
  cursor:pointer;
  text-align:left;
}
.explore-pad-choice:active{transform:translateY(1px)}
.explore-pad-choice.is-ok{background:#ddfff0;box-shadow:0 12px 20px rgba(24,166,120,.18), inset 0 0 0 3px #21b988}
.explore-pad-choice.is-bad{background:#fff0e9;box-shadow:0 12px 20px rgba(204,88,54,.16), inset 0 0 0 3px #f08b68}
.explore-pad-feedback{
  position:fixed;
  left:50%;
  top:43%;
  z-index:80;
  width:min(560px,72vw);
  min-height:118px;
  border-radius:32px;
  padding:22px 30px;
  color:#1a4b48;
  display:grid;
  place-items:center;
  gap:8px;
  text-align:center;
  pointer-events:none;
  transform:translate(-50%,-50%) scale(1);
  box-shadow:0 24px 52px rgba(14,74,80,.20), 0 0 0 8px rgba(255,255,255,.66);
}
.explore-pad-feedback[hidden]{display:none!important}
.explore-pad-feedback strong{display:block;font-size:clamp(34px,4vw,54px);line-height:1.04;letter-spacing:-.035em}
.explore-pad-feedback span{display:block;font-size:clamp(16px,1.55vw,22px);line-height:1.28;font-weight:850;color:#315c57}
.explore-pad-feedback.ok{background:linear-gradient(180deg,#f1fff4 0%,#dcffe9 100%);border:4px solid #35c979;color:#08733b}
.explore-pad-feedback.bad{background:linear-gradient(180deg,#fff7f2 0%,#ffe9e2 100%);border:4px solid #ff8e78;color:#972519}
.explore-pad-right-actions{
  margin-top:auto;
  display:grid;
  grid-template-columns:1.2fr 1fr;
  gap:12px;
}
.explore-pad-primary,
.explore-pad-secondary{
  min-height:58px;
  border:0;
  border-radius:22px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:0 18px;
  font-size:18px;
  font-weight:950;
  text-decoration:none;
  cursor:pointer;
  white-space:nowrap;
}
.explore-pad-primary{background:#18a678;color:#fff;box-shadow:0 12px 20px rgba(24,166,120,.24)}
.explore-pad-secondary{background:#e8f5ff;color:#1b4d57}
.explore-pad-loading{
  grid-column:1/-1;
  min-height:420px;
  border-radius:32px;
  background:rgba(255,255,255,.82);
  display:grid;place-items:center;
  font-size:24px;font-weight:950;color:#23514b;
}
@media (max-width: 899px){
  body.v218-explore-page{overflow:auto}
  .explore-pad-app{width:min(760px, calc(100vw - 20px));padding:10px 0 14px;min-height:100dvh}
  .explore-pad-topbar{grid-template-columns:auto 1fr;grid-template-areas:"back title" "actions actions";border-radius:24px;min-height:0;gap:8px}
  .explore-pad-back{grid-area:back}
  .explore-pad-title{grid-area:title}
  .explore-pad-actions{grid-area:actions;display:grid;grid-template-columns:1fr 1fr 1fr;width:100%;gap:8px}
  .explore-pad-top-action,.explore-pad-farm{width:100%;min-height:46px}
  .explore-pad-icon{width:48px;height:48px;font-size:27px;border-radius:18px}
  .explore-pad-title h1{font-size:22px}
  .explore-pad-title p{font-size:13px}
  .explore-pad-stage{display:flex;flex-direction:column;gap:12px;min-height:0}
  .explore-pad-card{padding:16px;border-radius:26px;overflow:visible}
  .explore-pad-question-title{font-size:31px}
  .explore-pad-phenomenon{font-size:20px;padding:15px 16px}
  .explore-pad-observe{grid-template-columns:1fr;gap:8px}
  .explore-pad-step{padding:12px 14px}
  .explore-pad-step span{font-size:16px}
  .explore-pad-right-head{min-height:38px}
  .explore-pad-level-badge{min-height:36px;min-width:72px;font-size:17px;padding:0 14px}
  .explore-pad-picker{position:fixed;left:12px;right:12px;top:84px;width:auto}
  .explore-pad-picker-grid{grid-template-columns:1fr 1fr}
  .explore-pad-choice-grid,.explore-pad-choice-grid[data-count="3"]{grid-template-columns:1fr;gap:10px}
  .explore-pad-choice{min-height:62px;font-size:20px}
  .explore-pad-feedback{top:40%;width:min(520px,86vw);min-height:104px;padding:18px 24px;border-radius:28px}
}
@media (orientation: landscape) and (max-height: 620px){
  body.v218-explore-page{overflow:hidden}
  .explore-pad-app{width:min(1120px, calc(100vw - 20px));padding:8px 0;gap:8px}
  .explore-pad-topbar{min-height:56px;border-radius:22px;padding:7px 10px}
  .explore-pad-back,.explore-pad-farm,.explore-pad-top-action{min-height:42px;font-size:15px;padding:0 13px}
  .explore-pad-icon{width:42px;height:42px;font-size:24px;border-radius:16px}
  .explore-pad-title h1{font-size:21px}.explore-pad-title p{font-size:12px;margin-top:2px}
  .explore-pad-stage{gap:10px}
  .explore-pad-card{border-radius:24px;padding:14px;gap:9px}
  .explore-pad-pill{font-size:13px;padding:7px 11px}
  .explore-pad-question-title{font-size:clamp(25px,2.8vw,34px)}
  .explore-pad-phenomenon{font-size:18px;line-height:1.35;padding:12px 14px;border-radius:20px}
  .explore-pad-observe{gap:8px}
  .explore-pad-step{padding:9px 10px;border-radius:18px}.explore-pad-step span{font-size:14px;line-height:1.25}.explore-pad-step b{font-size:13px}
  .explore-pad-mini-title{font-size:21px}
  .explore-pad-right-head{min-height:32px}
  .explore-pad-level-badge{min-height:32px;min-width:66px;font-size:15px;padding:0 12px}
  .explore-pad-picker{top:64px;right:8px;width:min(500px,calc(100vw - 18px));padding:11px;border-radius:20px}
  .explore-pad-picker-grid{gap:8px}
  .explore-pad-picker-option{min-height:68px;border-radius:16px;padding:10px}
  .explore-pad-picker-option strong{font-size:18px}
  .explore-pad-picker-option span{font-size:12px}
  .explore-pad-ask{font-size:19px;line-height:1.24;padding:12px 14px;border-radius:19px}
  

.explore-pad-choice-grid{gap:8px}.explore-pad-choice-grid[data-count="3"]{grid-template-columns:1fr;gap:8px}
  .explore-pad-choice{min-height:50px;border-radius:18px;font-size:18px;padding:9px 12px}
  .explore-pad-feedback{top:42%;width:min(500px,72vw);min-height:92px;border-radius:26px;padding:16px 22px}.explore-pad-feedback strong{font-size:clamp(28px,4vw,44px)}.explore-pad-feedback span{font-size:clamp(14px,1.6vw,18px);line-height:1.22}
  .explore-pad-primary,.explore-pad-secondary{min-height:46px;border-radius:17px;font-size:16px}
}
/* v218 fit correction: the app owns the viewport height on横屏，不再让 100dvh + padding 产生伪滚动。 */
body.v218-explore-page{
  overflow:hidden;
}
.explore-pad-app{
  height:100dvh;
  min-height:0;
}
@media (max-width: 899px){
  body.v218-explore-page{overflow:auto;}
  .explore-pad-app{height:auto;min-height:100dvh;}
}
@media (orientation: landscape){
  body.v218-explore-page{overflow:hidden;}
  .explore-pad-app{height:100dvh;min-height:0;}
}
body.v218-explore-page{
  padding-bottom:0!important;
}
body.v218-explore-page .fullscreen-fab,
body.v218-explore-page [class*="fullscreen"],
body.v218-explore-page [class*="Fullscreen"]{
  display:none!important;
}

/* v218: 统一题库型页面交互。难度放进“选关卡”弹层，主界面只显示当前难度胶囊。 */