/* ================= 基础重置 ================= */
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:#e8471c;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
:root{
  --orange:#ff6a2b;
  --orange-deep:#e8471c;
  --orange-light:#ff9432;
  --gold:#ffd75e;
  --gold-deep:#f5a623;
  --card:#fffbf8;
  --text:#2b2b2b;
  --text-sub:#8a8078;
  --line:#f0e4da;
  --ok:#22a06b;
  --err:#e8471c;
  --safe-t:env(safe-area-inset-top,0px);
  --safe-b:env(safe-area-inset-bottom,0px);
}
img{display:block;width:100%}
button,input{font-family:inherit;font-size:inherit;border:none;outline:none;background:none;color:inherit}

/* ================= 舞台 ================= */
.stage{
  position:relative;
  max-width:480px;margin:0 auto;min-height:100vh;
  display:flex;flex-direction:column;
  background:linear-gradient(180deg,#cf3510 0%,#e2441a 24%,#ee5520 52%,#f86524 78%,#ff7530 100%);
  overflow:hidden;
}
.stage::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(120% 40% at 15% 6%,rgba(255,214,120,.42) 0%,rgba(255,214,120,0) 55%),
    radial-gradient(90% 34% at 88% 30%,rgba(255,255,255,.18) 0%,rgba(255,255,255,0) 60%),
    radial-gradient(120% 42% at 50% 100%,rgba(255,226,150,.16) 0%,rgba(255,226,150,0) 62%);
  mix-blend-mode:screen;
}
/* 漂浮光点装饰 */
.spark{position:absolute;border-radius:50%;background:radial-gradient(circle,rgba(255,238,190,.7) 0%,rgba(255,215,94,0) 70%);pointer-events:none;animation:float 7s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0) scale(1);opacity:.26}50%{transform:translateY(-12px) scale(1.07);opacity:.44}}
.sp1{width:104px;height:104px;top:8%;left:-3%;animation-delay:0s}
.sp2{width:66px;height:66px;top:24%;right:-2%;animation-delay:1.4s}
.sp3{width:112px;height:112px;bottom:18%;left:-7%;animation-delay:2.6s}
.sp4{width:58px;height:58px;bottom:36%;right:3%;animation-delay:3.8s}

/* ================= 屏幕切换 ================= */
.screen{position:relative;z-index:2;flex:1;flex-direction:column;display:none;animation:screenIn .34s cubic-bezier(.22,1,.36,1)}
.screen.on{display:flex}
@keyframes screenIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}

/* ================= 首页 ================= */
.hero-wrap{position:relative;line-height:0;background:#e8471c;flex:0 0 auto}
.hero-wrap img{width:100%;height:auto;display:block}

/* ---- 左上角返回（覆盖在 hero 上，不占布局高度） ---- */
.btn-back{
  position:absolute;left:12px;top:46px;z-index:6;
  width:36px;height:36px;border-radius:50%;
  background:rgba(0,0,0,.22);
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background .2s,transform .16s;
  -webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);
}
.btn-back:active{background:rgba(0,0,0,.36);transform:scale(.93)}
.btn-back svg{width:17px;height:17px}

.sheet{
  position:relative;margin-top:-18px;flex:1;
  background:var(--card);
  border-radius:22px 22px 0 0;
  padding:14px 18px calc(14px + var(--safe-b));
  box-shadow:0 -8px 30px rgba(160,60,10,.22);
}
.sheet-title{
  font-size:17px;font-weight:800;color:#c93a12;letter-spacing:.3px;
  text-align:center;margin-bottom:9px;position:relative;padding-bottom:3px;
}
.sheet-title::after{
  content:"";position:absolute;left:50%;bottom:0;transform:translateX(-50%);
  width:46px;height:3px;border-radius:3px;
  background:linear-gradient(90deg,var(--gold),var(--orange-light),var(--gold));
}
.intro p{
  font-size:13.5px;line-height:1.55;color:#4a423c;margin-bottom:5px;text-align:justify;
}
.intro p strong{color:#c93a12;font-weight:700}
.hl{
  color:#d2451a;font-weight:700;
  background:linear-gradient(180deg,rgba(255,215,94,0) 62%,rgba(255,215,94,.65) 62%);
  padding:0 1px;
}
.rule-box{
  margin-top:7px;border-radius:10px;padding:11px 13px 10px;
  background:linear-gradient(180deg,#fff5ea,#fff9f3);
  border:1px solid #ffe0c8;
}
.rule-box h3{font-size:13px;font-weight:800;color:#c93a12;margin-bottom:6px;display:flex;align-items:center;gap:6px}
.rule-box h3::before{content:"";width:4px;height:14px;border-radius:2px;background:linear-gradient(180deg,var(--gold),var(--orange))}
.rule-box .box-text{font-size:12px;line-height:1.55;color:#6b6058;text-align:justify}
.rule-box li{list-style:none;font-size:13.5px;line-height:1.75;color:#6b6058;display:flex;gap:8px}
.rule-box li i{flex:0 0 auto;width:17px;height:17px;margin-top:4px;border-radius:50%;background:var(--orange);color:#fff;font-size:11px;font-style:normal;font-weight:700;display:flex;align-items:center;justify-content:center}
.rule-box li + li{margin-top:8px}

.act{margin-top:22px}
#scr-home .sheet{display:flex;flex-direction:column}
#scr-home .sheet .act{margin-top:auto;padding-top:14px}
.btn{
  display:flex;align-items:center;justify-content:center;gap:8px;
  width:100%;height:52px;border-radius:26px;
  font-size:17px;font-weight:800;letter-spacing:1px;color:#fff;
  background:linear-gradient(180deg,#ff9432,#f2611f 55%,#e8471c);
  box-shadow:0 8px 20px rgba(232,71,28,.36),inset 0 1px 0 rgba(255,255,255,.4);
  position:relative;overflow:hidden;transition:transform .16s,box-shadow .16s;
  cursor:pointer;
}
.btn:active{transform:translateY(2px) scale(.985);box-shadow:0 4px 12px rgba(232,71,28,.34)}
.btn::after{
  content:"";position:absolute;top:0;left:-60%;width:40%;height:100%;
  background:linear-gradient(100deg,rgba(255,255,255,0),rgba(255,255,255,.42),rgba(255,255,255,0));
  transform:skewX(-18deg);animation:shine 3.2s ease-in-out infinite;
}
@keyframes shine{0%{left:-60%}32%{left:120%}100%{left:120%}}
.btn.ghost{
  background:#fff;color:#d2451a;border:1.5px solid #ffcdae;box-shadow:none;
}
.btn.ghost::after{display:none}
.btn.gold{
  background:linear-gradient(180deg,#ffe38f,#ffc74a 55%,#f5a623);color:#8a4a06;
  box-shadow:0 8px 20px rgba(245,166,35,.4),inset 0 1px 0 rgba(255,255,255,.6);
}
.btn[disabled]{opacity:.45;pointer-events:none}
.btn + .btn{margin-top:12px}
.foot-note{
  margin-top:9px;text-align:center;font-size:11px;line-height:1.6;color:#b0998a;
}

/* ================= 答题页 ================= */
.qbar{
  position:sticky;top:0;z-index:20;
  padding:calc(10px + var(--safe-t)) 16px 12px;
  background:linear-gradient(180deg,rgba(232,71,28,.98),rgba(242,86,31,.94));
  backdrop-filter:blur(8px);
}
.qbar-top{display:flex;align-items:center;gap:10px}
.qbar-back{
  width:30px;height:30px;flex:0 0 auto;border-radius:50%;
  background:rgba(255,255,255,.2);display:flex;align-items:center;justify-content:center;
  cursor:pointer;transition:background .2s;
}
.qbar-back:active{background:rgba(255,255,255,.36)}
.qbar-back svg{width:15px;height:15px}
.qbar-idx{font-size:15px;font-weight:800;color:#fff;letter-spacing:.4px}
.qbar-idx em{font-style:normal;font-size:19px;color:var(--gold)}
.qbar-timer{
  margin-left:auto;display:flex;align-items:center;gap:5px;
  height:26px;padding:0 11px;border-radius:13px;
  background:rgba(0,0,0,.18);color:#ffe6b0;font-size:12.5px;font-weight:700;
  font-variant-numeric:tabular-nums;
}
.qbar-timer.low{background:rgba(255,255,255,.94);color:#e8471c;animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:.55}}
.qbar-timer svg{width:13px;height:13px}
.pbar{margin-top:10px;height:5px;border-radius:3px;background:rgba(0,0,0,.16);overflow:hidden}
.pbar i{
  display:block;height:100%;width:0;border-radius:3px;
  background:linear-gradient(90deg,var(--gold),#fff0c0);
  transition:width .36s cubic-bezier(.22,1,.36,1);
}

.qbody{padding:16px 16px calc(26px + var(--safe-b));flex:1;display:flex;flex-direction:column}
.qbody .qact{margin-top:auto;padding-top:20px}
.qcard{
  background:var(--card);border-radius:18px;padding:22px 18px 20px;
  box-shadow:0 10px 26px rgba(150,50,10,.2);
}
.qtag{
  display:inline-flex;align-items:center;gap:5px;height:24px;padding:0 10px;border-radius:12px;
  background:linear-gradient(90deg,#ffe6c8,#ffd7a5);color:#b8430f;
  font-size:12px;font-weight:800;letter-spacing:.5px;
}
.qtext{
  margin-top:14px;font-size:17.5px;line-height:1.62;font-weight:700;color:#2b2b2b;
  letter-spacing:.2px;
}
.opts{margin-top:20px;display:flex;flex-direction:column;gap:11px}
.opt{
  display:flex;align-items:flex-start;gap:11px;
  padding:14px 14px;border-radius:14px;
  background:#fff;border:1.5px solid #f0e4da;
  cursor:pointer;transition:all .18s cubic-bezier(.22,1,.36,1);
}
.opt:active{transform:scale(.985)}
.opt .key{
  flex:0 0 auto;width:24px;height:24px;border-radius:50%;
  border:1.5px solid #ddcfc3;color:#b0998a;
  font-size:12.5px;font-weight:800;display:flex;align-items:center;justify-content:center;
  transition:all .18s;background:#fff;
}
.opt .val{flex:1;font-size:15px;line-height:1.55;color:#4a423c;padding-top:1px}
.opt.sel{
  border-color:var(--orange);
  background:linear-gradient(180deg,#fff6ee,#fff1e4);
  box-shadow:0 5px 14px rgba(255,106,43,.2);
}
.opt.sel .key{background:linear-gradient(180deg,#ff9432,#f2611f);border-color:transparent;color:#fff;transform:scale(1.06)}
.opt.sel .val{color:#c93a12;font-weight:600}

.qact{margin-top:22px;display:flex;gap:12px}
.qact .btn{margin-top:0}
.qact .btn.prev{flex:0 0 96px;background:rgba(255,255,255,.34);box-shadow:inset 0 0 0 1px rgba(255,255,255,.5);color:#fff;font-weight:700;font-size:15px}
.qact .btn.prev::after{display:none}
.qact .btn.prev[disabled]{opacity:.5}

/* ================= 结果页 ================= */
.result-head{
  padding:calc(14px + var(--safe-t)) 20px 0;text-align:center;color:#fff;
}
.score-ring{
  position:relative;width:172px;height:172px;margin:14px auto 0;
}
.score-ring svg{width:172px;height:172px;transform:rotate(-90deg);display:block}
.score-ring .track{fill:none;stroke:rgba(0,0,0,.16);stroke-width:11}
.score-ring .bar{fill:none;stroke:url(#gd);stroke-width:11;stroke-linecap:round;transition:stroke-dashoffset 1s cubic-bezier(.22,1,.36,1)}
.score-in{
  position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
}
.score-in b{font-size:46px;font-weight:900;color:var(--gold);line-height:1;text-shadow:0 3px 0 rgba(150,50,10,.35);font-variant-numeric:tabular-nums}
.score-in b span{font-size:18px;font-weight:700;color:#ffe6b0;margin-left:1px}
.score-in small{font-size:12px;color:#ffe6b0;letter-spacing:1px}
.verdict{margin-top:12px;font-size:23px;font-weight:900;letter-spacing:1px;color:#fff;text-shadow:0 3px 0 rgba(160,55,10,.3)}
.verdict-sub{margin-top:8px;font-size:13.5px;line-height:1.7;color:#ffe9c8;padding:0 12px}
.sheet.mt{margin-top:22px;border-radius:22px 22px 0 0}

.panel{
  background:var(--card);border-radius:18px;padding:18px 16px;margin-top:16px;
  box-shadow:0 10px 26px rgba(150,50,10,.18);
}
.panel h3{font-size:15px;font-weight:800;color:#c93a12;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.panel h3 .cnt{margin-left:auto;font-size:12px;font-weight:700;color:var(--text-sub)}
.ana{border-top:1px dashed var(--line);padding:14px 0 2px}
.ana:first-of-type{border-top:none;padding-top:0}
.ana-t{display:flex;gap:8px;font-size:14.5px;font-weight:700;line-height:1.55;color:#2b2b2b}
.ana-t .no{flex:0 0 auto;width:20px;height:20px;border-radius:50%;background:#f2e6dc;color:#8a7a6c;font-size:11.5px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:1px}
.ana.ok .ana-t .no{background:#dff5ea;color:#12805a}
.ana.no .ana-t .no{background:#ffe4da;color:#c93a12}
.ana-row{margin-top:9px;font-size:13.5px;line-height:1.6;color:#6b6058;padding-left:28px}
.ana-row .lb{color:#b0998a;margin-right:4px}
.ana-row .bad{color:#c93a12;font-weight:700;text-decoration:line-through;text-decoration-color:rgba(201,58,18,.45)}
.ana-row .good{color:#12805a;font-weight:700}
.ana-exp{margin-top:7px;font-size:12.8px;line-height:1.7;color:#8a8078;background:#fdf5ee;border-radius:9px;padding:9px 11px;margin-left:28px}
.ana-exp b{color:#c93a12;font-weight:700}

/* ================= 表单（规格对齐参考表单：星号前置 / 左侧线性图标 / 48px 高 / #dedede 描边 / 5px 圆角） ================= */
.field{margin-bottom:12px}
.field label{display:block;font-size:13.5px;font-weight:700;color:#333;margin-bottom:6px}
.field label i{color:#ff4d4f;font-style:normal;margin-right:1px}
.field .ip{position:relative}
.field .ico{
  position:absolute;left:14px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;color:#9aa0a6;pointer-events:none;
}
.field input{
  width:100%;height:48px;border-radius:5px;padding:0 15px 0 44px;
  background:#fff;border:1px solid #dedede;font-size:15px;color:#2b2b2b;
  transition:border-color .2s,box-shadow .2s;
}
.field input::placeholder{color:#bdbdbd}
.field input:focus{border-color:#ff7a45;box-shadow:0 0 0 3px rgba(255,106,43,.1)}
.field.bad input{border-color:#ff4d4f;box-shadow:0 0 0 3px rgba(255,77,79,.1)}
.field .err{display:none;margin-top:6px;font-size:12px;color:#ff4d4f}
.field.bad .err{display:block}
.reg{margin-top:13px;padding-top:11px}

/* 礼花 */
.confetti{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:3}
.confetti i{position:absolute;top:-14px;width:8px;height:13px;border-radius:2px;opacity:.95;animation:fall linear forwards}
@keyframes fall{0%{transform:translateY(-20px) rotate(0)}100%{transform:translateY(105vh) rotate(720deg)}}

/* toast */
.toast{
  position:fixed;left:50%;bottom:calc(78px + var(--safe-b));transform:translate(-50%,14px);
  max-width:82vw;padding:11px 18px;border-radius:22px;
  background:rgba(38,22,14,.9);color:#fff;font-size:13.5px;line-height:1.5;text-align:center;
  opacity:0;pointer-events:none;transition:all .28s;z-index:99;backdrop-filter:blur(6px);
}
.toast.on{opacity:1;transform:translate(-50%,0)}