/* CO-CHU-0311 */
.vh-hero{background:#0b1b3f;color:#fff;padding:52px 0 40px}.vh-hero h1{color:#fff;font-size:clamp(30px,4vw,50px);max-width:740px}.vh-hero a{color:#f6ce73}.eyebrow{color:#f6ce73;letter-spacing:2px;font-size:14.5px}.vh-main{padding-top:30px;padding-bottom:60px}.filters,.controls{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin:16px 0}.filters label{display:grid;gap:6px}.filters input{min-width:230px}button,select,textarea,input{font:inherit}button,select,input,textarea{border:1px solid #bdc7d8;border-radius:9px;padding:10px;background:white;color:#0b1b3f}button{cursor:pointer;min-height:44px}button:hover{border-color:#105DC8;background:#fff7ed}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible{outline:3px solid #d79f29;outline-offset:3px}.clip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.clip{border:1px solid #dce2ee;border-radius:16px;overflow:hidden;background:#fff;box-shadow:0 5px 20px #0b1b3f08}.clip img{width:100%;aspect-ratio:16/9;object-fit:cover}.clip-body{padding:20px}.clip h2{font-size:21px}.clip a{display:block}.level-badge{color:#144D9D;font-weight:700}.study-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:28px}.player-shell{aspect-ratio:16/9;min-height:200px;background:#0b1b3f;border-radius:12px;overflow:hidden}.player-shell iframe{width:100%;height:100%;min-height:200px}.sentence{border:1px solid #dce2ee;border-radius:12px;padding:16px;margin-bottom:12px;background:#fff}.sentence.active{border-left:5px solid #105DC8;background:#fffaf0}.hanzi{font-size:25px;line-height:1.8;margin:9px 0}.word{border:0;padding:0 2px;min-height:0;font-size:inherit;background:none;border-radius:3px}.py{color:#1A55A7}.vi{color:#43526b}.hide-py .py,.hide-vi .vi,.dictating .hanzi,.dictating .py,.dictating .vi{display:none}.practice,.lock{background:#f5f7fb;border-radius:14px;padding:22px;margin-top:22px}.lock{background:#fff3d7}textarea{width:100%;resize:vertical}.answer-label{display:block;margin:12px 0 6px}dialog{max-width:440px;width:90%;border:0;border-radius:16px;padding:25px}dialog::backdrop{background:#0b1b3f88}#closeWord{float:right}#feedback{white-space:pre-line}.empty{padding:45px;background:#f5f7fb;border-radius:15px}.muted{font-size:14.5px;color:#56647b}[hidden]{display:none!important}@media(max-width:900px){.clip-grid{grid-template-columns:repeat(2,1fr)}.study-grid{grid-template-columns:1fr}}@media(max-width:560px){.clip-grid{grid-template-columns:1fr}.vh-hero{padding:30px 0}.filters>*{max-width:100%}.controls{gap:8px}.controls label{font-size:15.5px}.practice{padding:15px}}

/* 28/10/2026: chép chính tả rõ câu nào, chấm từng chữ, nhận xét của thầy chữ đỏ */
.dict-nav{display:flex;align-items:center;gap:10px;margin:12px 0 4px;flex-wrap:wrap}.dict-now{flex:1;min-width:180px;text-align:center;background:#fff;border:2px solid #105DC8;border-radius:12px;padding:8px 10px}.dict-now b{font-size:20px;color:#105DC8}.dict-now span{font-size:14.5px;color:#56647b}.dict-start{background:#0b1b3f;color:#fff;border-color:#0b1b3f;font-weight:700}.dict-start:hover{background:#1e3a8a;color:#fff}
.dict-hint{background:#fff;border:1px dashed #d79f29;border-radius:10px;padding:10px 12px;margin:8px 0}.boxes{display:inline-flex;gap:4px;flex-wrap:wrap;vertical-align:middle;margin-left:6px}.boxes i{display:inline-block;width:20px;height:20px;border:1.5px solid #bdc7d8;border-radius:4px;background:#f5f7fb}.vi-hint{color:#43526b}
.dictating .sentence{opacity:.55}.dictating .sentence.active,.dictating .sentence.revealed{opacity:1}.dictating .sentence.revealed .hanzi{display:block}.dictating .sentence.revealed .py,.dictating .sentence.revealed .vi{display:block}
.dict-tag{display:inline-block;background:#105DC8;color:#fff;font-size:13.5px;font-weight:700;border-radius:999px;padding:2px 10px;margin:0 0 6px}
.grade-card{background:#fff;border:1px solid #dce2ee;border-radius:12px;padding:12px 14px;margin-top:10px;white-space:normal}.grade-score{font-weight:800;font-size:18px;margin-bottom:6px}.grade-score.good{color:#15803d}.grade-score.mid{color:#1D4ED8}.grade-score.low{color:#105DC8}.grade-row{display:grid;grid-template-columns:80px 1fr;gap:8px;align-items:baseline;margin:4px 0}.grade-row>span:first-child{font-size:14.5px;color:#56647b}.grade-row .hz{font-size:24px;letter-spacing:1px}.hz .ok{color:#15803d}.hz .bad{color:#105DC8;background:#E8F1FD;border-radius:3px}.hz .miss{color:#105DC8;text-decoration:underline 2px}.hz .gap{color:#105DC8}
.coach-box{margin-top:12px;border:2px solid #105DC8;background:#F5F9FF;border-radius:12px;padding:12px 14px}.coach-box b{color:#144D9D}.coach-box div{color:#105DC8;font-weight:600;line-height:1.6;white-space:pre-line;margin-top:4px}
@media(max-width:560px){.dict-nav button{flex:1}.dict-now{order:-1;flex-basis:100%}.grade-row{grid-template-columns:64px 1fr}.grade-row .hz{font-size:21px}}

/* ===== 04/11/2026: RÀ SOÁT MÀU - tối đa 3 màu/trang (trắng-xám, xanh dương #0B6CF3, đỏ nhấn) ===== */
html body .vh-hero a, html body .vh-hero .eyebrow { color: #9CC4FD !important; }