/* ============ Taibao · Signature Course — Kids Lesson Styles ============ */
/* A colourful, candy-bright, big-type STUDENT-FACING lesson — deliberately   */
/* different from the school's white official site (main.css). Per Luke's     */
/* rule: elementary self-study pages are colourful & cute, NOT white/plain.   */

:root{
  --coral:#FF6B4A;
  --coral-deep:#E04A2B;
  --sun:#FFB200;
  --leaf:#34A853;
  --leaf-deep:#1E7D3C;
  --sky:#3D8BFF;
  --sky-deep:#1F66D6;
  --grape:#7C5CFC;
  --bronze:#B07D3C;       /* heritage thread back to the main site */
  --ink:#2a2433;
  --ink-soft:#6b6478;
  --paper:#FFFDF7;
  --mint-bg:#E7F7EE;
  --peach-bg:#FFEFE6;
  --sky-bg:#E8F1FF;
  --butter-bg:#FFF7DC;
  --grape-bg:#F0EBFF;
  --radius:26px;
  --shadow:0 16px 34px -14px rgba(60,40,20,.28);
  --shadow-sm:0 8px 18px -8px rgba(60,40,20,.22);
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'Nunito','PingFang TC','Apple LiGothic Medium','Microsoft JhengHei',sans-serif;
  color:var(--ink);
  background:var(--butter-bg);
  line-height:1.6;
  font-size:20px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
.wrap{max-width:920px;margin:0 auto;padding:0 22px;}
h1,h2,h3,.badge,.word-en,.big{font-family:'Fredoka','PingFang TC',sans-serif;}

/* ===== Top mini-bar (back to course) ===== */
.kid-topbar{
  background:#fff;border-bottom:3px solid #ffe2b0;
  padding:12px 0;position:sticky;top:0;z-index:40;
}
.kid-topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;}
.kid-topbar a{
  font-weight:800;text-decoration:none;color:var(--coral-deep);
  font-size:16px;
}
.kid-topbar .home-link{color:var(--sky-deep);}
.kid-topbar .crumb{color:var(--ink-soft);font-size:15px;font-weight:700;}

/* ===== Hero ===== */
.lesson-hero{
  background:
    radial-gradient(circle at 15% 20%,#FFE08A 0,transparent 42%),
    radial-gradient(circle at 85% 15%,#FFC1AE 0,transparent 40%),
    radial-gradient(circle at 75% 90%,#BFE3FF 0,transparent 42%),
    linear-gradient(160deg,#FFF1C9 0%,#FFE4D3 60%,#E8F1FF 100%);
  padding:50px 0 56px;text-align:center;
}
.lesson-hero .badge{
  display:inline-block;background:var(--coral);color:#fff;
  font-weight:800;font-size:18px;letter-spacing:.04em;
  padding:8px 22px;border-radius:999px;
  box-shadow:var(--shadow-sm);transform:rotate(-2deg);
  margin-bottom:18px;
}
.lesson-hero h1{
  font-size:clamp(34px,6.4vw,52px);font-weight:700;
  color:#3a2a12;line-height:1.08;
}
.lesson-hero h1 .zh{
  display:block;font-size:clamp(20px,3.4vw,28px);
  color:var(--coral-deep);margin-top:10px;
  font-family:'PingFang TC',sans-serif;font-weight:700;
}
.lesson-hero .sub{
  margin-top:16px;font-size:19px;font-weight:700;color:var(--ink-soft);
}
.lesson-hero .emoji-row{font-size:40px;margin-top:18px;letter-spacing:6px;}

/* ===== Teacher note ===== */
.teacher-note{
  max-width:760px;margin:-24px auto 0;position:relative;z-index:2;
  background:#fff;border:2px dashed var(--bronze);
  border-radius:18px;padding:16px 22px;
  font-size:15.5px;color:var(--ink-soft);font-weight:600;
  box-shadow:var(--shadow-sm);
}
.teacher-note b{color:var(--bronze);}

/* ===== Section base ===== */
.lesson-sec{padding:46px 0;}
.lesson-sec.mint{background:var(--mint-bg);}
.lesson-sec.peach{background:var(--peach-bg);}
.lesson-sec.sky{background:var(--sky-bg);}
.lesson-sec.grape{background:var(--grape-bg);}
.lesson-sec.paper{background:var(--paper);}
.sec-title{
  font-size:clamp(26px,4.6vw,36px);font-weight:700;
  text-align:center;line-height:1.15;margin-bottom:6px;color:var(--ink);
}
.sec-title .zh{
  display:block;font-family:'PingFang TC',sans-serif;
  font-size:18px;color:var(--ink-soft);margin-top:4px;font-weight:700;
}
.sec-emoji{text-align:center;font-size:38px;margin-bottom:6px;}

/* ===== Goals ===== */
.goals{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px;}
.goal{
  background:#fff;border-radius:var(--radius);padding:24px 20px;text-align:center;
  box-shadow:var(--shadow-sm);border-bottom:6px solid var(--sun);
}
.goal:nth-child(2){border-bottom-color:var(--leaf);}
.goal:nth-child(3){border-bottom-color:var(--sky);}
.goal .g-emoji{font-size:42px;}
.goal p{font-size:17.5px;font-weight:700;margin-top:10px;}
.goal p .zh{display:block;font-family:'PingFang TC',sans-serif;color:var(--ink-soft);font-size:15px;font-weight:700;margin-top:4px;}

/* ===== Story / talk bubble ===== */
.story{
  background:#fff;border-radius:var(--radius);padding:30px 30px 26px;
  max-width:760px;margin:26px auto 0;box-shadow:var(--shadow);
  border-left:10px solid var(--grape);
}
.story p{font-size:20px;margin:12px 0;line-height:1.7;}
.story p .zh{display:block;font-family:'PingFang TC',sans-serif;color:var(--ink-soft);font-size:17px;margin-top:6px;}

/* ===== Warm-up ===== */
.warmup{
  max-width:720px;margin:26px auto 0;background:#fff;border-radius:var(--radius);
  padding:26px 28px;box-shadow:var(--shadow-sm);text-align:center;border:3px solid #ffd9a0;
}
.warmup .q{font-size:21px;font-weight:800;color:var(--coral-deep);}
.warmup .q .zh{display:block;font-family:'PingFang TC',sans-serif;color:var(--ink);font-size:17px;font-weight:700;margin-top:6px;}

/* ===== Word box ===== */
.words{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:30px;}
.word{
  background:#fff;border-radius:var(--radius);padding:22px 18px 20px;text-align:center;
  box-shadow:var(--shadow-sm);transition:transform .15s;
  border-top:7px solid var(--coral);
}
.word:nth-child(6n+2){border-top-color:var(--sun);}
.word:nth-child(6n+3){border-top-color:var(--leaf);}
.word:nth-child(6n+4){border-top-color:var(--sky);}
.word:nth-child(6n+5){border-top-color:var(--grape);}
.word:nth-child(6n){border-top-color:var(--bronze);}
.word:hover{transform:translateY(-5px) rotate(-1deg);}
.word .w-emoji{font-size:46px;line-height:1;}
.word .word-en{font-size:25px;font-weight:700;margin-top:10px;color:var(--ink);}
.word .word-zh{font-family:'PingFang TC',sans-serif;font-size:17px;color:var(--ink-soft);font-weight:700;margin-top:2px;}
.speak-btn{
  margin-top:14px;border:0;cursor:pointer;
  background:var(--sky);color:#fff;font-weight:800;font-family:inherit;
  font-size:15px;padding:8px 18px;border-radius:999px;
  box-shadow:var(--shadow-sm);transition:transform .12s,background .15s;
  display:inline-flex;align-items:center;gap:7px;
}
.speak-btn:hover{transform:scale(1.06);background:var(--sky-deep);}
.speak-btn:active{transform:scale(.96);}

/* ===== Say it (sentences) ===== */
.sentences{max-width:760px;margin:28px auto 0;display:grid;gap:14px;}
.sentence{
  background:#fff;border-radius:20px;padding:18px 20px;
  box-shadow:var(--shadow-sm);display:flex;align-items:center;gap:16px;
  border-left:8px solid var(--leaf);
}
.sentence:nth-child(even){border-left-color:var(--sky);}
.sentence .s-text{flex:1;}
.sentence .s-en{font-size:20px;font-weight:700;}
.sentence .s-zh{font-family:'PingFang TC',sans-serif;font-size:16px;color:var(--ink-soft);font-weight:700;margin-top:3px;}
.sentence .speak-btn{margin-top:0;flex-shrink:0;background:var(--leaf);}
.sentence .speak-btn:hover{background:var(--leaf-deep);}

/* ===== Goddess card ===== */
.goddess{
  max-width:760px;margin:26px auto 0;background:#fff;border-radius:var(--radius);
  padding:28px 30px;box-shadow:var(--shadow);text-align:center;border-bottom:8px solid var(--grape);
}
.goddess .star{font-size:46px;}
.goddess p{font-size:19px;margin-top:10px;line-height:1.65;}
.goddess p .zh{display:block;font-family:'PingFang TC',sans-serif;color:var(--ink-soft);font-size:16.5px;margin-top:6px;}

/* ===== Quiz ===== */
.quiz{max-width:760px;margin:30px auto 0;}
.qcard{
  background:#fff;border-radius:var(--radius);padding:24px 24px 20px;
  box-shadow:var(--shadow-sm);margin-bottom:20px;border-top:7px solid var(--sun);
}
.qcard .qnum{
  display:inline-block;background:var(--sun);color:#fff;font-weight:800;
  font-size:15px;padding:3px 14px;border-radius:999px;margin-bottom:10px;
}
.qcard .qtext{font-size:20px;font-weight:800;}
.qcard .qhint{font-family:'PingFang TC',sans-serif;font-size:15.5px;color:var(--ink-soft);font-weight:700;margin-top:6px;}
.opts{display:grid;gap:10px;margin-top:16px;}
.opt{
  text-align:left;border:2.5px solid #eee2cf;background:#fffdf8;
  border-radius:16px;padding:13px 18px;font-size:18px;font-weight:700;
  font-family:inherit;color:var(--ink);cursor:pointer;transition:all .12s;
}
.opt:hover{border-color:var(--sky);transform:translateX(3px);}
.opt.correct{background:#E4F8EA;border-color:var(--leaf);color:var(--leaf-deep);}
.opt.wrong{background:#FDE7E0;border-color:var(--coral);color:var(--coral-deep);}
.opt:disabled{cursor:default;}
.explain{
  margin-top:14px;background:var(--butter-bg);border-radius:14px;
  padding:12px 16px;font-size:16px;font-weight:700;display:none;
}
.explain.show{display:block;}
.explain .zh{display:block;font-family:'PingFang TC',sans-serif;color:var(--ink-soft);font-size:15px;margin-top:4px;}
.score-box{
  text-align:center;background:#fff;border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-sm);margin-top:8px;
  font-size:22px;font-weight:800;color:var(--sky-deep);
}
.score-box .zh{display:block;font-family:'PingFang TC',sans-serif;font-size:16px;color:var(--ink-soft);margin-top:6px;}

/* ===== Be the guide ===== */
.guide-challenge{
  max-width:760px;margin:28px auto 0;background:linear-gradient(160deg,#fff 0%,#FFF1C9 100%);
  border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);border:3px solid var(--sun);
}
.guide-challenge h3{font-size:24px;font-weight:700;text-align:center;}
.guide-challenge h3 .zh{display:block;font-family:'PingFang TC',sans-serif;font-size:17px;color:var(--ink-soft);margin-top:4px;}
.checklist{list-style:none;margin:18px 0 0;display:grid;gap:12px;}
.checklist li{
  background:#fff;border-radius:16px;padding:14px 18px;font-size:18px;font-weight:700;
  box-shadow:var(--shadow-sm);display:flex;gap:12px;align-items:flex-start;
}
.checklist li .tick{font-size:22px;}
.checklist li .zh{display:block;font-family:'PingFang TC',sans-serif;color:var(--ink-soft);font-size:15px;font-weight:700;margin-top:2px;}

/* ===== Footer ===== */
.kid-foot{background:#3a2a12;color:#ffe6c0;text-align:center;padding:30px 0;font-weight:700;}
.kid-foot a{color:#FFCF8A;}
.kid-foot .row2{font-size:14px;color:#d8c4a4;margin-top:8px;font-weight:600;}
.back-btn{
  display:inline-block;margin-top:14px;background:var(--sky);color:#fff;
  text-decoration:none;font-weight:800;padding:11px 26px;border-radius:999px;
}

/* ===== Mobile ===== */
@media (max-width:760px){
  body{font-size:19px;}
  .goals{grid-template-columns:1fr;}
  .words{grid-template-columns:repeat(2,1fr);}
  .sentence{flex-direction:column;align-items:flex-start;gap:12px;}
  .sentence .speak-btn{align-self:flex-start;}
}
@media (max-width:430px){
  .words{grid-template-columns:1fr;}
}