:root {
  --bg1: #fbf3ff;
  --bg2: #e9f4ff;
  --card: #ffffff;
  --primary: #8b5cf6;
  --primary-d: #6d3ee0;
  --chinese: #ff7aa2;
  --math: #4dabf7;
  --english: #51cf66;
  --text: #2d2a45;
  --muted: #8b88a8;
  --line: #efe9fb;
  --peach: #ff9b72;
  --gold: #ffc86f;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: linear-gradient(135deg, var(--bg1), var(--bg2));
  color: var(--text);
  min-height: 100vh;
  padding: 18px;
}
.app { max-width: 980px; margin: 0 auto; }

.topbar {
  text-align: center; margin-bottom: 18px;
  background: linear-gradient(135deg, #8b5cf6, #4dabf7);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.topbar h1 { font-size: 28px; font-weight: 800; letter-spacing: .5px; }
.subtitle { color: var(--muted); margin-top: 4px; -webkit-text-fill-color: var(--muted); }

.layout { display: grid; grid-template-columns: 320px 1fr; gap: 18px; }
@media (max-width: 760px) { .layout { grid-template-columns: 1fr; } }

.card {
  background: var(--card);
  border-radius: 26px;
  padding: 22px;
  box-shadow: 0 14px 40px rgba(139, 92, 246, 0.12);
}

/* 神兽面板 */
.pet-card { text-align: center; }
.pet-emoji { font-size: 92px; line-height: 1; margin: 6px 0; animation: sp-bob 3.2s ease-in-out infinite; filter: drop-shadow(0 8px 14px rgba(139,92,246,.18)); }
@keyframes float { 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(-8px);} }
@keyframes sp-bob { 0%,100%{ transform: translateY(0) rotate(-1deg);} 50%{ transform: translateY(-10px) rotate(1deg);} }
.pet-name { font-size: 22px; font-weight: 700; display: flex; gap: 8px; justify-content: center; align-items: center; }
.pet-stage { color: var(--primary); font-weight: 600; margin-bottom: 16px; }

.bar { text-align: left; margin: 10px 0; }
.bar label { font-size: 13px; color: var(--muted); }
.bar-track { background: var(--line); border-radius: 999px; height: 12px; overflow: hidden; margin-top: 4px; }
.bar-fill { height: 100%; width: 0%; border-radius: 999px; transition: width .5s ease; }
.bar-fill.exp { background: linear-gradient(90deg, #a98bff, #7c5cff); }
.bar-fill.happy { background: linear-gradient(90deg, #ffd43b, #ff922b); }
.bar-fill.food { background: linear-gradient(90deg, #69db7c, #37b24d); }
.bar-text { font-size: 12px; color: var(--muted); float: right; margin-top: -18px; }

.coins { margin: 14px 0; font-size: 16px; }

.pet-actions { display: flex; flex-direction: column; gap: 10px; margin-top: 6px; }
.action-btn {
  border: none; cursor: pointer; padding: 12px;
  border-radius: 14px; font-size: 15px; font-weight: 600;
  background: linear-gradient(90deg, var(--primary), var(--primary-d));
  color: #fff; transition: transform .1s ease, opacity .2s;
}
.action-btn:hover { transform: translateY(-2px); }
.action-btn:active { transform: translateY(0); }
.action-btn.ghost { background: var(--line); color: var(--muted); }
.signin-btn { background: linear-gradient(90deg, #ffc86f, #ff9b72); color: #6b3b00; box-shadow: 0 8px 18px rgba(255,154,114,.3); }
.signin-btn.done { background: var(--line); color: var(--muted); box-shadow: none; cursor: default; }

.toast {
  margin-top: 12px; min-height: 20px; color: var(--primary-d);
  font-weight: 600; opacity: 0; transition: opacity .3s;
}
.toast.show { opacity: 1; }

/* 右侧 */
.play-card h2 { margin-bottom: 14px; }
.subjects { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.subject-btn {
  border: none; cursor: pointer; border-radius: 16px; padding: 18px 8px;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  color: #fff; font-weight: 700; font-size: 16px;
  transition: transform .12s ease, box-shadow .12s ease;
}
.subject-btn.active { outline: 3px solid var(--primary-d); transform: translateY(-3px); }
.subject-btn:hover { transform: translateY(-3px); }
.subject-btn .s-emoji { font-size: 30px; }
.subject-btn.chinese { background: linear-gradient(135deg, #ff9bbd, var(--chinese)); }
.subject-btn.math { background: linear-gradient(135deg, #74c0fc, var(--math)); }
.subject-btn.english { background: linear-gradient(135deg, #8ce99a, var(--english)); }

.grade-row { margin: 18px 0; display: flex; align-items: center; gap: 8px; }
.grade-row select { padding: 8px 10px; border-radius: 10px; border: 1px solid var(--line); font-size: 14px; }
.filter-row { margin: 18px 0 10px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.filter-row select { padding: 8px 10px; border-radius: 10px; border: 1px solid var(--line); font-size: 14px; }
.bank-list { display: flex; flex-direction: column; gap: 8px; margin: 8px 0 4px; }
.bank-item { background: var(--bg2); border-radius: 12px; padding: 10px 12px; }
.bank-name { font-weight: 600; font-size: 14px; }
.bank-meta { font-size: 12px; color: var(--muted); margin-top: 2px; }
.hint { font-size: 13px; color: var(--muted); padding: 8px 2px; }

.stats { border-top: 1px solid var(--line); padding-top: 14px; }
.stats h3 { margin-bottom: 10px; }
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.stat { background: var(--bg2); border-radius: 12px; padding: 12px; text-align: center; }
.stat b { display: block; font-size: 22px; color: var(--primary-d); }
.stat span { font-size: 12px; color: var(--muted); }
.subj-stat { list-style: none; margin-top: 12px; display: flex; flex-direction: column; gap: 6px; color: var(--muted); font-size: 14px; }

/* 答题 */
.quiz-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; font-weight: 600; }
.quiz-q { font-size: 19px; font-weight: 600; margin-bottom: 16px; line-height: 1.5; }
.quiz-options { display: grid; gap: 10px; }
.option {
  border: 2px solid var(--line); background: #fff; cursor: pointer;
  border-radius: 18px; padding: 15px 16px; font-size: 16px; text-align: left;
  transition: all .15s ease; display: flex; align-items: center; gap: 10px;
  animation: pop-in .28s ease both;
}
.option:nth-child(2) { animation-delay: .05s; }
.option:nth-child(3) { animation-delay: .10s; }
.option:nth-child(4) { animation-delay: .15s; }
.option:nth-child(5) { animation-delay: .20s; }
@keyframes pop-in { 0%{ opacity:0; transform: scale(.92) translateY(6px);} 100%{ opacity:1; transform: scale(1) translateY(0);} }
@keyframes shake-x { 0%,100%{transform:translateX(0);} 20%{transform:translateX(-7px);} 40%{transform:translateX(7px);} 60%{transform:translateX(-5px);} 80%{transform:translateX(5px);} }
@keyframes next-bounce { 0%,100%{transform:translateY(0);} 50%{transform:translateY(-5px);} }
.opt-key {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 50%; background: var(--line);
  font-weight: 700; color: var(--primary-d); flex: 0 0 auto;
}
.quiz-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.tag { background: var(--bg2); color: var(--muted); font-size: 12px; padding: 4px 10px; border-radius: 999px; }
.tag b { color: var(--primary-d); }
.option:hover { border-color: var(--primary); transform: translateX(3px); }
.option.correct { border-color: var(--english); background: #ebfbee; color: #2b8a3e; animation: pop-in .3s ease, combo-glow .9s ease; }
.option.wrong { border-color: var(--chinese); background: #fff0f4; color: #c2255c; animation: shake-x .45s; }
.option:disabled { cursor: default; }
@keyframes combo-glow { 0%{ box-shadow: 0 0 0 0 rgba(255,200,111,.7);} 100%{ box-shadow: 0 0 0 14px rgba(255,200,111,0);} }

.quiz-feedback { margin-top: 14px; padding: 12px; border-radius: 12px; background: var(--bg2); font-size: 14px; line-height: 1.5; }
.next-btn { margin-top: 14px; width: 100%; border: none; cursor: pointer; padding: 13px; border-radius: 16px; background: linear-gradient(90deg, var(--primary), var(--primary-d)); color: #fff; font-weight: 700; font-size: 15px; box-shadow: 0 8px 18px rgba(139,92,246,.28); animation: next-bounce 1.4s ease-in-out infinite; }
.next-btn:active { transform: scale(.97); }
.hidden { display: none !important; }

.result-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 16px 0; }
.evolve-msg { background: linear-gradient(135deg,#fff3bf,#ffe066); color:#8a6d00; padding: 12px; border-radius: 12px; margin-bottom: 14px; font-weight: 600; text-align:center; }
.result-stats .stat b { color: var(--primary); }

.foot { text-align: center; margin-top: 22px; color: var(--muted); font-size: 13px; }
.foot code { background: var(--line); padding: 2px 6px; border-radius: 6px; }

.mini-btn { border: none; background: var(--line); border-radius: 8px; cursor: pointer; padding: 4px 8px; font-size: 14px; transition: transform .12s; }
.mini-btn:hover { transform: scale(1.1); }

/* 连对徽章 */
.combo-badge { display: inline-flex; align-items: center; gap: 4px; font-weight: 800; font-size: 14px; color: var(--peach); background: linear-gradient(180deg,#fff6bd,#ffc86f); padding: 4px 12px; border-radius: 999px; box-shadow: 0 4px 12px rgba(255,200,111,.4); animation: combo-glow 1s ease; }

/* 答对庆祝彩屑 */
.confetti { position: fixed; top: -10px; width: 9px; height: 14px; border-radius: 2px; pointer-events: none; z-index: 99; animation: confetti-fall 1.1s ease-in forwards; }
@keyframes confetti-fall { 0%{ transform: translateY(0) rotate(0); opacity: 1; } 100%{ transform: translateY(105vh) rotate(540deg); opacity: 0; } }


/* ============ 登录/注册 ============ */
.auth-mask { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; background: radial-gradient(120% 120% at 50% 0%, #efe6ff 0%, #e6f0ff 60%, #f7f3ff 100%); z-index: 200; }
.auth-mask.hidden { display: none; }
.auth-card { width: 340px; max-width: 92vw; background: #fff; border-radius: 24px; padding: 28px 26px; box-shadow: 0 24px 60px rgba(124,58,237,.25); text-align: center; animation: pop-in .35s ease; }
.auth-logo { font-size: 48px; }
.auth-card h2 { margin: 8px 0 14px; color: #5b21b6; }
.auth-tabs { display: flex; gap: 8px; justify-content: center; margin-bottom: 14px; }
.auth-tab { flex: 1; padding: 10px; border: none; border-radius: 12px; background: #f1edff; color: #7c3aed; font-weight: 700; cursor: pointer; }
.auth-tab.active { background: linear-gradient(180deg,#8b5cf6,#7c3aed); color: #fff; }
.auth-form { display: flex; flex-direction: column; gap: 10px; margin-top: 6px; }
.auth-form input[type=text], .auth-form input[type=password] { padding: 12px 14px; border: 2px solid #ece6ff; border-radius: 12px; font-size: 15px; outline: none; }
.auth-form input:focus { border-color: #a78bfa; }
.contact-choose { display: flex; gap: 16px; justify-content: center; font-size: 14px; color: #555; }
.contact-row { display: flex; gap: 8px; }
.contact-row input { flex: 1; padding: 12px 14px; border: 2px solid #ece6ff; border-radius: 12px; font-size: 15px; outline: none; }
.code-btn { white-space: nowrap; padding: 0 14px; border: none; border-radius: 12px; background: #ede9fe; color: #7c3aed; font-weight: 700; cursor: pointer; }
.code-btn:disabled { opacity: .5; cursor: not-allowed; }
.auth-btn { padding: 13px; border: none; border-radius: 14px; background: linear-gradient(180deg,#8b5cf6,#7c3aed); color: #fff; font-weight: 800; font-size: 16px; cursor: pointer; box-shadow: 0 10px 24px rgba(124,58,237,.35); transition: transform .15s ease; }
.auth-btn:hover { transform: translateY(-2px); }
.auth-msg { min-height: 18px; font-size: 13px; color: #e03131; }
.auth-msg.ok { color: #2f9e44; }
.auth-tip { margin-top: 12px; font-size: 12px; color: #999; }
.recaptcha-box { display: flex; justify-content: center; min-height: 4px; margin-bottom: 6px; }
.topbar-left { flex: 1; }
.user-box { display: flex; align-items: center; gap: 10px; }
.user-box.hidden { display: none; }
.user-name { font-weight: 700; color: #5b21b6; }

/* ============ 首页 / 介绍页 ============ */
.home-topbar { display: flex; align-items: center; justify-content: space-between; }
.home-actions { flex-shrink: 0; }
.nav-btn { padding: 10px 18px; border: none; border-radius: 999px; background: linear-gradient(180deg,#8b5cf6,#7c3aed); color: #fff; font-weight: 700; cursor: pointer; box-shadow: 0 8px 20px rgba(124,58,237,.3); transition: transform .15s ease; }
.nav-btn:hover { transform: translateY(-2px); }
.home-main { max-width: 960px; margin: 0 auto; padding: 8px 20px 40px; }
.hero { text-align: center; padding: 48px 20px 28px; }
.hero-emoji { font-size: 56px; letter-spacing: 6px; animation: float 3s ease-in-out infinite; }
.hero h2 { font-size: 26px; color: #4c1d95; margin: 10px 0; }
.hero-sub { color: #6b688a; margin-bottom: 20px; }
.hero-cta { padding: 14px 32px; border: none; border-radius: 16px; background: linear-gradient(180deg,#8b5cf6,#7c3aed); color: #fff; font-weight: 800; font-size: 17px; cursor: pointer; box-shadow: 0 12px 28px rgba(124,58,237,.35); transition: transform .15s ease; }
.hero-cta:hover { transform: translateY(-3px); }
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 24px 0; }
.feature { background: #fff; border-radius: 18px; padding: 22px; box-shadow: 0 10px 26px rgba(124,58,237,.10); }
.feature .f-emoji { font-size: 34px; }
.feature h3 { margin: 8px 0 6px; color: #5b21b6; }
.feature p { color: #6b688a; font-size: 14px; line-height: 1.6; }
.how { background: #fff; border-radius: 18px; padding: 24px 28px; box-shadow: 0 10px 26px rgba(124,58,237,.10); }
.how h3 { color: #5b21b6; margin-bottom: 10px; }
.how ol { margin: 0; padding-left: 22px; color: #5a577a; line-height: 2; }
@keyframes float { 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(-8px);} }

/* ============ 登录/注册页（独立页面） ============ */
.auth-page { min-height: 100vh; background: radial-gradient(120% 120% at 50% 0%, #efe6ff 0%, #e6f0ff 60%, #f7f3ff 100%); }
.auth-wrap { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 24px; }
.auth-back { position: fixed; top: 18px; left: 18px; color: #7c3aed; font-weight: 700; text-decoration: none; }
.auth-card { width: 340px; max-width: 92vw; background: #fff; border-radius: 24px; padding: 28px 26px; box-shadow: 0 24px 60px rgba(124,58,237,.25); text-align: center; animation: pop-in .35s ease; }
.auth-logo { font-size: 48px; }
.auth-card h2 { margin: 8px 0 14px; color: #5b21b6; }
.auth-tabs { display: flex; gap: 8px; justify-content: center; margin-bottom: 14px; }
.auth-tab { flex: 1; padding: 10px; border: none; border-radius: 12px; background: #f1edff; color: #7c3aed; font-weight: 700; cursor: pointer; }
.auth-tab.active { background: linear-gradient(180deg,#8b5cf6,#7c3aed); color: #fff; }
.auth-form { display: flex; flex-direction: column; gap: 10px; margin-top: 6px; }
.auth-form input[type=text], .auth-form input[type=password] { padding: 12px 14px; border: 2px solid #ece6ff; border-radius: 12px; font-size: 15px; outline: none; }
.auth-form input:focus { border-color: #a78bfa; }
.contact-choose { display: flex; gap: 16px; justify-content: center; font-size: 14px; color: #555; }
.contact-row { display: flex; gap: 8px; }
.contact-row input { flex: 1; padding: 12px 14px; border: 2px solid #ece6ff; border-radius: 12px; font-size: 15px; outline: none; }
.code-btn { white-space: nowrap; padding: 0 14px; border: none; border-radius: 12px; background: #ede9fe; color: #7c3aed; font-weight: 700; cursor: pointer; }
.code-btn:disabled { opacity: .5; cursor: not-allowed; }
.auth-btn { padding: 13px; border: none; border-radius: 14px; background: linear-gradient(180deg,#8b5cf6,#7c3aed); color: #fff; font-weight: 800; font-size: 16px; cursor: pointer; box-shadow: 0 10px 24px rgba(124,58,237,.35); transition: transform .15s ease; }
.auth-btn:hover { transform: translateY(-2px); }
.auth-msg { min-height: 18px; font-size: 13px; color: #e03131; }
.auth-msg.ok { color: #2f9e44; }
.auth-tip { margin-top: 12px; font-size: 12px; color: #999; }
.recaptcha-box { display: flex; justify-content: center; min-height: 4px; margin-bottom: 6px; }
@media (max-width: 560px) { .feature-grid { grid-template-columns: 1fr; } }