:root{
  /* 可爱粉白 Hello Kitty 主题 */
  --bg-0:#fff2f7;
  --bg-1:#ffe1ee;
  --bg-2:#fff7fb;
  --card:#ffffff;
  --card-soft:#fff4f9;
  --line:#ffd0e3;
  --line-soft:#ffe3ef;
  --ink:#5a3d4a;
  --ink-2:#9a7b88;
  --ink-3:#c19bb0;
  --pink:#ff8fb3;
  --pink-deep:#ff5e9a;
  --pink-soft:#ffe6f0;
  --kitty-red:#e60012;
  --green:#2fb380;
  --green-soft:#e2f7ee;
  --yellow:#ffb02e;
  --red:#ff6b8a;
  --red-soft:#ffe1e9;
  --blue:#6aa9ff;
  --radius:22px;
  --shadow:0 10px 28px rgba(255,126,170,.20);
  --shadow-sm:0 6px 16px rgba(255,126,170,.16);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  font-family:'Comic Sans MS','Yuanti SC','YouYuan','PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  background:
    radial-gradient(circle at 12% 16%, rgba(255,143,179,.16) 0 9px, transparent 10px) 0 0/26px 26px,
    radial-gradient(circle at 12% 16%, rgba(255,143,179,.10) 0 4px, transparent 5px) 13px 13px/26px 26px,
    linear-gradient(160deg,var(--bg-0),var(--bg-1) 60%,#ffeef5);
  color:var(--ink);
  font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
  position:relative;
  overflow-x:hidden;
}
#app{
  max-width:520px;margin:0 auto;min-height:100vh;
  padding-bottom:100px;position:relative;z-index:1
}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:none;background:none;color:inherit}
input{font-family:inherit;font-size:inherit}

/* ---------- 顶部 猫耳 + 蝴蝶结 ---------- */
.topbar{
  position:relative;padding:30px 18px 22px;margin:18px 12px 0;
  border-radius:28px;overflow:visible;
  background:rgba(255,255,255,.6);
  backdrop-filter:blur(16px) saturate(175%);
  -webkit-backdrop-filter:blur(16px) saturate(175%);
  border:2px solid rgba(255,255,255,.7);
  box-shadow:var(--shadow);
}
.topbar::before,.topbar::after{
  content:'';position:absolute;top:-15px;width:46px;height:42px;z-index:0;
  background:linear-gradient(160deg,#ffd9e8,#ffc2dc);
  border:2px solid var(--line);
  clip-path:polygon(50% 0,100% 100%,0 100%);
}
.topbar::before{left:24px;border-radius:0 0 14px 14px}
.topbar::after{right:24px;border-radius:0 0 14px 14px}
.kitty-bow{
  position:absolute;top:-11px;left:50%;transform:translateX(-50%);
  width:13px;height:19px;border-radius:4px;background:var(--kitty-red);z-index:3;
  box-shadow:0 2px 5px rgba(230,0,18,.35)
}
.kitty-bow::before,.kitty-bow::after{
  content:'';position:absolute;top:-1px;width:0;height:0;
  border-top:11px solid transparent;border-bottom:11px solid transparent;
}
.kitty-bow::before{left:-14px;border-right:15px solid var(--kitty-red)}
.kitty-bow::after{right:-14px;border-left:15px solid var(--kitty-red)}

.topbar .row{display:flex;justify-content:space-between;align-items:flex-start;position:relative;z-index:1}
.topbar h1{
  margin:0;font-size:21px;font-weight:700;letter-spacing:.5px;color:var(--ink);
  text-shadow:0 2px 0 #fff
}
.topbar .sub{
  font-size:12.5px;color:var(--ink-2);margin-top:5px;letter-spacing:.3px;
  display:flex;align-items:center;gap:6px
}
.countdown{
  text-align:center;min-width:84px;padding:9px 13px;border-radius:16px;
  background:var(--pink-soft);border:1.5px solid var(--line)
}
.countdown b{
  display:block;font-size:25px;line-height:1.05;font-weight:800;color:var(--pink-deep);
  font-variant-numeric:tabular-nums
}
.countdown span{font-size:10.5px;color:var(--ink-2);letter-spacing:.5px}

/* ---------- 卡片 ---------- */
.wrap{padding:0 12px}
.card{
  border-radius:var(--radius);padding:16px;margin-top:14px;
  background:var(--card);
  border:1.5px solid var(--line);
  box-shadow:var(--shadow-sm)
}
.card.tight{padding:13px}
.card-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:13px}
.card-title h2{
  margin:0;font-size:15.5px;font-weight:700;letter-spacing:.3px;color:var(--ink);
  display:flex;align-items:center;gap:7px
}
.card-title h2::before{
  content:'';width:8px;height:15px;border-radius:5px;
  background:linear-gradient(160deg,var(--pink),var(--pink-deep));
  box-shadow:0 1px 4px rgba(255,94,154,.5)
}
.card-title .more{font-size:11.5px;color:var(--ink-3);letter-spacing:.3px}

/* ---------- 今日任务 ---------- */
.task-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin-bottom:12px}
.task-item{
  background:var(--pink-soft);border:1.5px solid var(--line);
  border-radius:16px;padding:13px 8px;text-align:center;position:relative;overflow:hidden
}
.task-item .n{font-size:22px;font-weight:800;line-height:1.15;font-variant-numeric:tabular-nums;color:var(--pink-deep)}
.task-item .l{font-size:11.5px;color:var(--ink-2);margin-top:3px;letter-spacing:.5px}
.boost-note{
  font-size:12.5px;color:var(--pink-deep);background:var(--pink-soft);
  border:1.5px dashed var(--pink);border-radius:14px;padding:9px 12px;margin-bottom:14px;
  text-align:center;letter-spacing:.3px
}

/* ---------- 按钮 ---------- */
.btn{
  display:block;width:100%;text-align:center;padding:14px;border-radius:16px;
  font-size:16px;font-weight:700;letter-spacing:.5px;transition:.16s;position:relative;overflow:hidden;
  color:#fff
}
.btn:active{transform:scale(.978)}
.btn-primary{
  background:linear-gradient(135deg,#ffa6c4,#ff6fa3 55%,#ff5e9a);
  box-shadow:0 8px 20px rgba(255,94,154,.42),inset 0 1px 0 rgba(255,255,255,.5)
}
.btn-ghost{
  background:#fff;color:var(--pink-deep);
  border:1.5px solid var(--pink)
}
.btn-line{
  background:var(--pink-soft);color:var(--ink-2);border:1.5px solid var(--line)
}
.btn-sm{padding:11px;font-size:14px;border-radius:14px}
.btn-row{display:flex;gap:9px;margin-top:12px}
.btn-row .btn{margin:0}

/* ---------- 统计 ---------- */
.stat-row{display:flex;gap:8px}
.stat{
  flex:1;background:var(--card-soft);border:1.5px solid var(--line-soft);
  border-radius:14px;padding:11px 6px;text-align:center
}
.stat b{display:block;font-size:19px;font-weight:800;font-variant-numeric:tabular-nums;line-height:1.25;color:var(--ink)}
.stat span{font-size:10.5px;color:var(--ink-3);letter-spacing:.3px}

/* ---------- 做题页 ---------- */
.q-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 16px;margin:14px 12px 0;border-radius:20px;
  background:#fff;border:1.5px solid var(--line);
  position:sticky;top:8px;z-index:20;box-shadow:var(--shadow-sm)
}
.q-head .back{font-size:24px;color:var(--ink-2);width:30px;line-height:1}
.progress-wrap{flex:1;margin:0 12px}
.progress-txt{font-size:11.5px;color:var(--ink-3);text-align:center;margin-bottom:6px;letter-spacing:.5px}
.progress-bar{height:7px;background:var(--pink-soft);border-radius:4px;overflow:hidden}
.progress-fill{
  height:100%;border-radius:4px;transition:width .35s;
  background:linear-gradient(90deg,#ffb3d2,#ff5e9a)
}
.timer{
  font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums;
  min-width:46px;text-align:right;letter-spacing:.5px
}

.tag-row{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:13px}
.tag{
  font-size:11px;padding:3.5px 10px;border-radius:20px;letter-spacing:.3px;
  background:var(--card-soft);color:var(--ink-2);border:1px solid var(--line-soft)
}
.tag.sub{color:#fff;font-weight:700;border:none;box-shadow:0 2px 6px rgba(255,126,170,.3)}
.tag.review{background:var(--yellow);color:#7a4a00;border-color:#ffd27a}
.tag.lv{background:#fff0d6;color:#c98a16;border-color:#ffe0a8}
.tag.type{background:var(--pink-soft);color:var(--pink-deep);border-color:var(--line)}
.tag.boost{background:linear-gradient(135deg,#ff8fb3,#ff5e9a);color:#fff;border:none;font-weight:700;box-shadow:0 2px 8px rgba(255,94,154,.4)}

.stem{
  font-size:17px;line-height:1.8;white-space:pre-wrap;margin-bottom:16px;
  font-weight:600;letter-spacing:.2px;color:var(--ink)
}

/* 选择题 */
.opt{
  display:flex;align-items:flex-start;gap:11px;width:100%;text-align:left;
  padding:13px 14px;border-radius:16px;margin-bottom:9px;transition:.16s;
  font-size:15.5px;line-height:1.62;font-weight:500;
  background:#fff;border:2px solid var(--line);color:var(--ink)
}
.opt:active{background:var(--pink-soft)}
.opt .k{
  flex:none;width:26px;height:26px;border-radius:9px;
  background:var(--pink-soft);color:var(--pink-deep);
  font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:1px
}
.opt.right{
  border-color:var(--green);background:var(--green-soft);
  box-shadow:0 0 16px rgba(47,179,128,.22)
}
.opt.right .k{background:var(--green);color:#fff}
.opt.wrong{
  border-color:var(--red);background:var(--red-soft);
  box-shadow:0 0 16px rgba(255,107,138,.22)
}
.opt.wrong .k{background:var(--red);color:#fff}
.opt.disabled{pointer-events:none}

/* 判断题 */
.judge-row{display:flex;gap:11px;margin-bottom:4px}
.judge{
  flex:1;padding:20px 10px;border-radius:18px;text-align:center;transition:.16s;
  background:#fff;border:2px solid var(--line);font-weight:600
}
.judge:active{background:var(--pink-soft)}
.judge .sym{font-size:30px;line-height:1.1;display:block;margin-bottom:3px}
.judge .lb{font-size:13.5px;color:var(--ink-2);letter-spacing:1px}
.judge.t .sym{color:var(--green)}
.judge.f .sym{color:var(--red)}
.judge.right{
  border-color:var(--green);background:var(--green-soft);
  box-shadow:0 0 20px rgba(47,179,128,.24)
}
.judge.wrong{
  border-color:var(--red);background:var(--red-soft);
  box-shadow:0 0 20px rgba(255,107,138,.24)
}
.judge.disabled{pointer-events:none}

/* 解题提示（常规题，可展开） */
.hint-box{margin:2px 0 15px}
.hint-toggle{
  display:flex;align-items:center;gap:7px;width:100%;padding:11px 13px;border-radius:14px;
  background:var(--yellow);border:1.5px dashed #ffcf7a;
  color:#7a4a00;font-size:13.5px;font-weight:700;letter-spacing:.3px
}
.hint-toggle .ar{margin-left:auto;font-size:11px;transition:transform .22s}
.hint-toggle.open .ar{transform:rotate(180deg)}
.hint-body{
  margin-top:8px;padding:12px 14px;border-radius:13px;
  background:#fff7e6;border:1px solid #ffe2ab;
  font-size:14px;line-height:1.78;color:#8a5a00;
  animation:fadeDown .22s ease
}

/* ---------- 提升题（初中先修）常显框 ---------- */
.boost-box{
  margin:2px 0 15px;border-radius:16px;padding:13px 14px;
  background:linear-gradient(160deg,#fff0f6,#ffe3f0);
  border:2px solid var(--pink);
  box-shadow:0 4px 14px rgba(255,94,154,.18);
  animation:fadeDown .22s ease
}
.boost-hd{font-size:13.5px;font-weight:800;color:var(--pink-deep);margin-bottom:9px;letter-spacing:.3px}
.boost-row{display:flex;gap:8px;font-size:13.5px;line-height:1.72;margin-top:7px}
.boost-row .bl{flex:none;font-weight:700;color:var(--ink-2);min-width:92px}
.boost-row .bv{color:var(--ink);flex:1}

/* ---------- 判定与解析 ---------- */
.verdict{display:flex;align-items:center;gap:9px;font-weight:700;font-size:15.5px;margin:16px 0 11px}
.verdict.ok{color:var(--green)}
.verdict.no{color:var(--red)}
.verdict .ico{
  width:24px;height:24px;border-radius:50%;font-size:14px;
  display:flex;align-items:center;justify-content:center
}
.verdict.ok .ico{background:var(--green);color:#fff;box-shadow:0 0 12px rgba(47,179,128,.5)}
.verdict.no .ico{background:var(--red);color:#fff;box-shadow:0 0 12px rgba(255,107,138,.5)}

.analysis{
  border-radius:16px;padding:14px;margin-bottom:14px;
  background:var(--card-soft);border:1.5px solid var(--line);
  animation:fadeDown .25s ease
}
.analysis .ans{
  font-size:15px;font-weight:700;color:var(--green);
  padding-bottom:11px;margin-bottom:11px;border-bottom:1.5px dashed var(--line)
}
.analysis h4{
  margin:0 0 7px;font-size:12.5px;color:var(--ink-2);font-weight:700;
  display:flex;align-items:center;gap:5px;letter-spacing:.4px
}
.analysis .body{font-size:14.5px;line-height:1.82;white-space:pre-wrap;color:var(--ink)}
.analysis .tip{
  margin-top:12px;padding:10px 12px;border-radius:12px;
  background:#fff7e6;border:1px solid #ffe2ab;
  font-size:13.5px;line-height:1.74;color:#8a5a00
}
.analysis .tip b{color:#c98a16}

/* ---------- 结果页 ---------- */
.score-hero{text-align:center;padding:24px 16px 18px}
.score-ring{
  width:142px;height:142px;margin:0 auto 15px;border-radius:50%;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  position:relative;background:linear-gradient(160deg,#fff,#fff0f7);
  border:3px solid var(--pink);box-shadow:0 8px 22px rgba(255,94,154,.3)
}
.score-ring b{display:block;font-size:38px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;color:var(--pink-deep)}
.score-ring span{font-size:12px;color:var(--ink-2);margin-top:4px;display:block}
.score-word{font-size:17px;font-weight:700;margin-bottom:5px;letter-spacing:.4px;color:var(--ink)}
.score-desc{font-size:13.5px;color:var(--ink-2);line-height:1.7;padding:0 10px}

/* ---------- 列表 ---------- */
.list-item{
  display:flex;align-items:center;gap:12px;padding:12px 0;
  border-bottom:1px solid var(--line-soft)
}
.list-item:last-child{border-bottom:none}
.li-main{flex:1;min-width:0}
.li-title{font-size:14px;font-weight:600;color:var(--ink)}
.li-sub{font-size:12px;color:var(--ink-3);margin-top:3px}
.li-val{color:var(--red);font-size:12px;font-weight:700;white-space:nowrap}

/* 掌握度条 */
.bar-item{margin-bottom:13px}
.bar-item:last-child{margin-bottom:0}
.bar-head{display:flex;justify-content:space-between;font-size:13.5px;margin-bottom:6px}
.bar-head .t{color:var(--ink)}
.bar-head .v{color:var(--ink-3);font-size:12px;font-variant-numeric:tabular-nums}
.bar{height:8px;background:var(--pink-soft);border-radius:5px;overflow:hidden}
.bar i{display:block;height:100%;border-radius:5px;transition:width .55s;background:linear-gradient(90deg,#ffb3d2,#ff5e9a)}

/* 趋势图 */
.trend{display:flex;align-items:flex-end;gap:8px;height:112px;padding-top:10px}
.trend .col{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;min-width:0}
.trend .bar-v{
  width:100%;max-width:30px;border-radius:8px 8px 0 0;min-height:5px;position:relative;
  background:linear-gradient(180deg,#ff9ec4,#ff5e9a);
  box-shadow:0 0 10px rgba(255,94,154,.3)
}
.trend .bar-v em{
  position:absolute;top:-18px;left:50%;transform:translateX(-50%);
  font-size:10.5px;font-style:normal;color:var(--ink-2);white-space:nowrap;font-variant-numeric:tabular-nums
}
.trend .lb{font-size:10px;color:var(--ink-3);white-space:nowrap}

/* 短板 */
.weak{
  display:flex;align-items:center;gap:11px;padding:11px 12px;border-radius:14px;margin-bottom:8px;
  background:var(--red-soft);border:1.5px solid #ffc2d2
}
.weak:last-child{margin-bottom:0}
.weak .rank{
  flex:none;width:22px;height:22px;border-radius:8px;background:var(--pink-deep);color:#fff;
  font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center
}
.weak .m{flex:1;min-width:0}
.weak .m b{font-size:14.5px;font-weight:700;display:block;color:var(--ink)}
.weak .m span{font-size:11.5px;color:var(--ink-2)}
.weak .r{font-size:15px;font-weight:800;color:var(--red);font-variant-numeric:tabular-nums}

.advice{
  border-radius:14px;padding:13px;font-size:14px;line-height:1.85;color:var(--ink);
  background:#fff4f9;border:1.5px solid var(--line)
}
.advice b{color:var(--pink-deep)}

/* 初中先修预览 */
.boost-list{display:flex;flex-wrap:wrap;gap:8px}
.boost-chip{
  display:flex;flex-direction:column;gap:2px;padding:8px 12px;border-radius:14px;
  background:linear-gradient(160deg,#fff,#fff0f7);border:1.5px solid var(--line)
}
.boost-chip .bc-t{font-size:13.5px;font-weight:700;color:var(--ink)}
.boost-chip .bc-v{font-size:11px;color:var(--pink-deep)}

/* ---------- 空状态 ---------- */
.empty{text-align:center;padding:44px 20px;color:var(--ink-3)}
.empty .ico{font-size:40px;margin-bottom:12px;opacity:.8}
.empty p{margin:0;font-size:14px;line-height:1.8}

/* ---------- 底部导航 ---------- */
.tabbar{
  position:fixed;bottom:10px;left:50%;transform:translateX(-50%);
  width:calc(100% - 24px);max-width:496px;
  display:flex;padding:8px 0;border-radius:22px;z-index:50;
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(18px) saturate(160%);
  -webkit-backdrop-filter:blur(18px) saturate(160%);
  border:1.5px solid var(--line);
  box-shadow:0 10px 28px rgba(255,126,170,.28)
}
.tabbar button{flex:1;text-align:center;color:var(--ink-3);font-size:10.5px;padding:3px 0;letter-spacing:.3px;font-weight:600}
.tabbar button .ico{display:block;font-size:19px;line-height:1.35;filter:grayscale(.3);opacity:.55;transition:.16s}
.tabbar button.on{color:var(--pink-deep);font-weight:800}
.tabbar button.on .ico{filter:none;opacity:1;transform:scale(1.1)}

/* ---------- 弹窗 ---------- */
.mask{
  position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;padding:24px;
  background:rgba(90,61,74,.45);backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px)
}
.dialog{
  border-radius:24px;padding:24px;width:100%;max-width:322px;text-align:center;
  background:#fff;
  border:2px solid var(--line);
  box-shadow:0 20px 56px rgba(255,94,154,.4)
}
.dialog h3{margin:0 0 7px;font-size:18px;letter-spacing:.4px;color:var(--ink)}
.dialog p{margin:0 0 16px;font-size:13px;color:var(--ink-2);line-height:1.72}
.dialog input{
  width:100%;padding:13px;border-radius:14px;text-align:center;outline:none;
  font-size:21px;letter-spacing:9px;margin-bottom:14px;
  background:var(--card-soft);border:2px solid var(--line);color:var(--ink)
}
.dialog input:focus{border-color:var(--pink);box-shadow:0 0 14px rgba(255,94,154,.3)}
.dialog input::placeholder{color:var(--ink-3);letter-spacing:6px}

.footer-note{
  text-align:center;font-size:11px;color:var(--ink-3);
  padding:18px 20px 8px;line-height:1.85;letter-spacing:.3px
}
.badge-beta{
  display:inline-block;padding:2px 8px;border-radius:6px;font-size:10px;letter-spacing:1px;
  background:var(--pink-soft);color:var(--pink-deep);border:1px solid var(--line);
  vertical-align:middle;margin-left:6px;font-weight:700
}
@keyframes fadeDown{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:none}}

/* ---------- Hello Kitty 形象 & 毛玻璃 ---------- */
@keyframes kittyBob{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
.kitty-mascot-wrap{
  flex:none;align-self:flex-start;margin-right:2px;
  filter:drop-shadow(0 4px 8px rgba(255,94,154,.28));
  animation:kittyBob 3.2s ease-in-out infinite
}
.kitty-mascot{width:62px;height:64px;display:block}
.glass{
  background:rgba(255,255,255,.6);
  backdrop-filter:blur(16px) saturate(175%);
  -webkit-backdrop-filter:blur(16px) saturate(175%);
  border:1.5px solid rgba(255,255,255,.72)
}
/* 今日考点复习 */
.review-card{border-color:rgba(255,255,255,.72)}
.review-tip-line{font-size:12.5px;color:var(--ink-2);margin:-4px 0 12px;letter-spacing:.3px}
.review-group{margin-bottom:13px}
.review-group:last-child{margin-bottom:0}
.rg-head{font-size:13.5px;font-weight:800;margin-bottom:8px;letter-spacing:.3px}
.rg-tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:9px}
.rg-tag{
  font-size:12px;font-weight:700;padding:4px 11px;border-radius:20px;
  color:var(--c);background:rgba(255,255,255,.7);border:1.5px solid var(--line)
}
.rg-tips{display:flex;flex-direction:column;gap:5px}
.rg-tip{font-size:12px;line-height:1.62;color:var(--ink-2);background:rgba(255,255,255,.5);border-radius:10px;padding:6px 10px}
.rg-tip b{font-weight:700}

/* ---------- 云同步设置 ---------- */
.setup-card{max-width:420px;margin-top:24px}
.setup-tip{font-size:13px;line-height:1.78;color:var(--ink-2);margin:0 0 16px}
.pw-input{
  width:100%;padding:13px 14px;border-radius:14px;margin-bottom:11px;outline:none;
  font-size:17px;letter-spacing:6px;text-align:center;
  background:var(--card-soft);border:2px solid var(--line);color:var(--ink)
}
.pw-input:focus{border-color:var(--pink);box-shadow:0 0 14px rgba(255,94,154,.3)}
.pw-input::placeholder{color:var(--ink-3);letter-spacing:3px}
.setup-err{font-size:12.5px;color:var(--red);min-height:18px;margin-bottom:6px;text-align:center;letter-spacing:.3px}

/* 首页云同步状态条 */
.cloud-status{
  display:flex;align-items:center;justify-content:center;gap:7px;
  margin-top:12px;padding:9px 14px;border-radius:16px;
  background:rgba(255,255,255,.5);border:1.5px solid var(--line-soft);
  font-size:12.5px;letter-spacing:.4px;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)
}
.cloud-status .cs-ico{font-size:15px}
.cloud-status .cs-txt{font-weight:700}