:root{--ink:#2f3d4f;--cream:#fff8ed;--orange:#e89553}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff9f1;color:var(--ink);font-family:ui-rounded,"Arial Rounded MT Bold",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}
button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}
.home{max-width:1240px;margin:auto;padding:18px 23px 40px}.hero{background:linear-gradient(130deg,#fff0db,#e6f7f3 60%,#eae5fa);text-align:center;padding:45px 20px 42px;border-radius:36px;overflow:hidden;box-shadow:0 16px 34px #7f6a4921}.hero-badge{font-weight:900;color:#a66c41;letter-spacing:2px;font-size:13px}.hero-decoration{font-size:clamp(33px,5vw,67px);margin:18px 0 0}.hero h1{font-size:clamp(30px,5.5vw,70px);line-height:1.15;letter-spacing:.5px;margin:15px 0 12px;color:#344c54;font-weight:900}.hero h1 em{font-style:normal;color:#d6785d}.hero p{font-size:clamp(14px,2vw,20px)}
.group-nav{display:flex;gap:9px;overflow-x:auto;position:sticky;top:0;z-index:5;background:#fff9f1f1;padding:16px 0;scrollbar-width:none}.group-nav a{flex:none;text-decoration:none;background:#fff;color:#876c59;border:1px solid #efdfcf;border-radius:30px;padding:11px 17px;font-weight:800}.group{scroll-margin-top:85px;margin-top:38px}.group h2{display:flex;align-items:center;gap:12px;color:#4e5963;font-size:clamp(17px,2.4vw,26px);margin-bottom:19px}.group-counter{background:#f9e1cb;color:#bb7449;border-radius:13px;padding:8px 11px}.cards{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}.story-card{color:inherit;text-decoration:none;background:white;border-radius:21px;overflow:hidden;box-shadow:0 5px 17px #534e4420;border:1px solid #f3e9e0;transition:transform .2s}.story-card:hover{transform:translateY(-5px)}.cover{position:relative;aspect-ratio:1.15;overflow:hidden}.cover img{width:100%;height:100%;object-fit:cover}.no{position:absolute;top:10px;left:10px;background:#ffffffe8;border-radius:12px;padding:5px 9px;font-weight:900;color:#bc7b56}.story-name{font-weight:850;min-height:66px;padding:12px 12px 15px;font-size:16px;line-height:1.32}.home footer{text-align:center;margin-top:65px;color:#a36b52;font-size:20px;font-weight:850}.home footer p{font-size:12px;font-weight:500}
.reader{min-height:100dvh;display:flex;flex-direction:column;overflow-x:hidden;background:#fff7ed}.read-head{width:100%;padding:10px max(18px,env(safe-area-inset-right));display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;background:#fffaf3;box-shadow:0 2px 13px #513a2820;z-index:10}.back{border:0;background:#fde7d3;color:#855a42;border-radius:22px;min-height:44px;padding:9px 15px;font-size:16px;font-weight:800;text-decoration:none;white-space:nowrap}.read-title{font-weight:900;text-align:center;font-size:clamp(15px,2.2vw,24px)}.read-pad{width:44px;height:44px}
.reading{width:min(1160px,100%);padding:14px 17px 10px;margin:auto;flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center}.book{position:relative;width:100%;max-height:calc(100dvh - 153px);min-height:500px;aspect-ratio:1.45;border-radius:26px;overflow:hidden;background:#e5f3eb;box-shadow:0 13px 42px #66544330;display:flex;flex-direction:column;isolation:isolate}.artbox{position:absolute;inset:0}.artbox img{width:100%;height:100%;object-fit:cover;user-select:none;-webkit-user-drag:none}
.page-text{position:absolute;left:3.5%;right:3.5%;bottom:3.5%;padding:17px 23px 19px;background:rgba(255,255,255,.56);border:1px solid rgba(255,255,255,.82);border-radius:24px;box-shadow:0 8px 30px rgba(73,60,48,.18);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);max-height:48%;overflow-y:auto}.progress{font-size:13px;font-weight:800;color:#8c5c3d;margin:0 0 6px;letter-spacing:1px}.story-copy{font-size:clamp(19px,2.8vw,30px);line-height:1.52;font-weight:780;color:#203142;text-shadow:0 1px 0 rgba(255,255,255,.45)}.word{padding:0 2px;border:0;border-bottom:3px dotted #d58746;background:transparent;color:#824c2d;font-weight:900}.lesson-page .artbox:after{content:'🌟';position:absolute;top:10%;left:calc(50% - 45px);font-size:100px}.lesson-page .page-text{top:26%;bottom:auto;left:9%;right:9%;max-height:62%;text-align:center;background:rgba(255,248,212,.72);border:4px solid rgba(230,164,95,.9);padding:27px}.lesson-page .story-copy{font-size:clamp(23px,3.2vw,39px);line-height:1.44}.lesson-page .progress{font-size:clamp(18px,2.6vw,26px);color:#9c6031}
.page-nav{display:flex;width:min(680px,100%);align-items:center;justify-content:space-between;gap:10px;margin:16px auto 0}.page-nav button{border:0;border-radius:35px;background:#eaa16a;color:white;font-size:18px;font-weight:850;padding:10px 20px;min-height:44px}.page-nav button:disabled{background:#e6d4c8;color:#a88e7c}.dots{display:flex;gap:8px;align-items:center}.dot{width:10px;height:10px;border-radius:100%;background:#e5d4c5}.dot.active{width:26px;border-radius:10px;background:#db8656}.swipe-hint{font-size:12px;text-align:center;color:#7c685d;margin:12px 0 2px}dialog{border:0;border-radius:22px;padding:25px 30px;max-width:min(410px,calc(100vw - 40px));box-shadow:0 12px 65px #30251567;text-align:center;color:#384b55}dialog::backdrop{background:#1d24298a}.word-icon{font-size:45px}dialog h2{margin:5px 0 10px;color:#a76b42}dialog p{font-size:19px;line-height:1.5}dialog button{background:#e89e69;color:white;border:0;padding:13px 26px;border-radius:25px;font-weight:850}
@media(max-width:850px){.cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.read-head{padding:7px 10px}.back{padding:8px 12px}.book{max-height:calc(100dvh - 175px);min-height:430px;aspect-ratio:.9}.page-text{max-height:47%;padding:14px 17px}.lesson-page .page-text{left:5%;right:5%}}
@media(max-width:530px){.home{padding:10px 12px}.hero{border-radius:23px;padding:27px 8px}.cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.story-name{font-size:15px;min-height:65px}.group h2{font-size:17px}.read-title{font-size:13px;line-height:1.2}.back span{display:none}.book{aspect-ratio:.69;max-height:calc(100dvh - 171px);min-height:400px;border-radius:17px}.reading{padding:9px 9px 0}.page-text{left:3%;right:3%;bottom:3%;max-height:54%;padding:12px 13px}.story-copy{font-size:clamp(17px,4.7vw,23px);line-height:1.46}.lesson-page .story-copy{font-size:clamp(20px,5.1vw,28px)}.page-nav{margin-top:8px}.page-nav button{font-size:16px;padding:7px 17px}.swipe-hint{font-size:10px}}
@media(prefers-reduced-motion:no-preference){.book.turn-next{animation:turnRight .35s ease}.book.turn-prev{animation:turnLeft .35s ease}@keyframes turnRight{0%{transform:perspective(1400px) rotateY(-8deg);opacity:.62}100%{transform:none;opacity:1}}@keyframes turnLeft{0%{transform:perspective(1400px) rotateY(8deg);opacity:.62}100%{transform:none;opacity:1}}}


/* Bản minh họa mới: chữ không có nền, bố trí phía trên để không che nhân vật */
.book{background:linear-gradient(180deg,#8ecaf2,#f9e8bd 55%,#8bc47a)}
.artbox img{object-fit:contain}
.page-text,.lesson-page .page-text{
 top:2.6%;left:3%;right:3%;bottom:auto;
 max-height:42%;padding:8px 12px;overflow-y:auto;
 background:transparent!important;border:0!important;border-radius:0!important;
 box-shadow:none!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important;
 text-align:left;
}
.progress{font-size:clamp(12px,1.3vw,17px);color:#FFF7C4;font-weight:950;
 -webkit-text-stroke:2px #273C55;paint-order:stroke fill;text-shadow:1px 2px 3px #162c46}
.story-copy{font-weight:950;color:#FFFFFF;font-size:clamp(18px,2.3vw,28px);line-height:1.37;
 -webkit-text-stroke:3.5px #13263E;paint-order:stroke fill;
 text-shadow:1px 2px 2px #162b46,0 0 3px #162b46}
.word{color:#FFE25A!important;font-weight:950;-webkit-text-stroke:2.8px #192638;
 paint-order:stroke fill;text-shadow:1px 2px 2px #172739}
.lesson-page .page-text{top:6%;max-height:43%;padding:12px 20px;background:transparent!important}
.lesson-page .story-copy{font-size:clamp(22px,3vw,36px);color:#FFEA70;
 -webkit-text-stroke:3.5px #233147}
.lesson-page .artbox:after{top:auto;bottom:8%;right:6%;left:auto;opacity:.8}
@media(max-width:850px){.page-text,.lesson-page .page-text{top:2%;left:2%;right:2%;max-height:41%}
.story-copy{font-size:clamp(18px,3vw,26px);-webkit-text-stroke:3px #162B40}}
@media(max-width:530px){
 .book{aspect-ratio:.69;min-height:400px}
 .artbox img{object-fit:contain}
 .page-text,.lesson-page .page-text{top:2%;left:3%;right:3%;bottom:auto;max-height:35%;padding:4px 6px}
 .story-copy{font-size:clamp(17px,4.1vw,21px);line-height:1.35;-webkit-text-stroke:2.8px #152840}
 .lesson-page .story-copy{font-size:clamp(19px,4.7vw,25px)}
 .progress{font-size:12px}
}