/* Web học & thực hành NLP — Nguyễn Huyền Kita */
:root{
  color-scheme: light;
  --do:#c0392b; --do-dam:#9b1c2c; --vang:#e0a33a; --vang-nhat:#fff3dc;
  --kem:#fffaf3; --muc:#2b2b33; --xam:#6a6872; --vien:#f0e2cf; --nen:#fffdf9; --the:#fff;
  --xanh:#1f8a4c; --xanh-nhat:#ecf8ef; --hong-nhat:#fff0ee; --cam-nhat:#fff6e5; --dong:#3b2a2e; --dong-chu:#fff7ec;
  --lam:#2563b0; --lam-nhat:#eef5ff;
  --bong:0 8px 28px rgba(192,57,43,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:"Be Vietnam Pro",system-ui,sans-serif;color:var(--muc);background:var(--nen);font-size:17px;line-height:1.7}
a{color:var(--do)}
h1,h2,h3{font-family:"Playfair Display",Georgia,serif;color:var(--do-dam);line-height:1.25}
img,svg{max-width:100%;height:auto}
button{font-family:inherit}
:focus-visible{outline:3px solid var(--vang);outline-offset:2px}

/* ---------- thanh trên ---------- */
.top{position:sticky;top:0;z-index:30;background:#9b1c2c;color:#fff;display:flex;align-items:center;gap:10px;padding:8px 16px;box-shadow:0 2px 10px rgba(0,0,0,.15)}
.top a{color:#fff;text-decoration:none}
.top .ten{font-weight:800;letter-spacing:.03em;white-space:nowrap}
.top .menu{display:flex;gap:2px;margin-left:12px;flex-wrap:wrap}
.top .menu a{padding:6px 10px;border-radius:8px;font-size:14.5px;font-weight:600;opacity:.92}
.top .menu a:hover,.top .menu a.dang{background:rgba(255,255,255,.16);opacity:1}
.top .sp{flex:1}
.neo{background:var(--vang);color:#2a1a08;border:0;border-radius:999px;padding:7px 14px;font-weight:800;cursor:pointer;font-size:14px;white-space:nowrap}
.neo:active{transform:scale(.95)}
.nut-menu{display:none;background:transparent;border:1px solid rgba(255,255,255,.5);color:#fff;border-radius:8px;font-size:18px;padding:3px 10px;cursor:pointer}

/* ---------- trang chủ ---------- */
.hero{background:linear-gradient(160deg,#6e0f1c,#9b1c2c);color:#fff;padding:56px 16px 64px;text-align:center}
.hero h1{color:#fff;font-size:clamp(30px,6vw,50px);margin:0 0 8px}
.hero p{max-width:680px;margin:0 auto;opacity:.93}
.hero .tom{margin-top:10px;font-size:15px;opacity:.85}
.hero-nho{padding:36px 16px 44px}
.hero-nho h1{font-size:clamp(28px,5vw,40px)}
.cua{max-width:1100px;margin:-36px auto 30px;padding:0 16px;display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.the{background:var(--the);border:1px solid var(--vien);border-radius:16px;padding:22px;text-decoration:none;color:var(--muc);display:flex;flex-direction:column;gap:8px;box-shadow:var(--bong);transition:transform .15s}
.the:hover{transform:translateY(-3px)}
.the .so{font-family:"Playfair Display",serif;font-size:40px;color:var(--vang);line-height:1}
.the h2{margin:0;font-size:23px}
.the .mo{color:var(--xam);font-size:15px;flex:1}
.the .tt{font-size:13px;font-weight:700;color:var(--xanh)}
.trang-thai-khoa{font-size:13px;color:var(--xam)}
.thanh{height:6px;background:var(--vang-nhat);border-radius:9px;overflow:hidden}
.thanh i{display:block;height:100%;background:var(--vang);width:0;transition:width .3s}
.khoi{max-width:1100px;margin:0 auto 36px;padding:0 16px}
.khoi h2{font-size:clamp(24px,4vw,32px);margin:0 0 14px}
.luoi-3{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
.the-tap{background:var(--the);border:1px solid var(--vien);border-radius:16px;padding:20px;text-decoration:none;color:var(--muc);box-shadow:var(--bong);display:flex;flex-direction:column;gap:6px}
.the-tap .bieu{font-size:34px;line-height:1}
.the-tap b{font-size:19px;color:var(--do-dam)}
.the-tap span{color:var(--xam);font-size:15px}
.vak{display:flex;flex-wrap:wrap;gap:10px;margin:8px 0 0}
.vak span{background:var(--vang-nhat);border-radius:999px;padding:4px 12px;font-size:14px;font-weight:600}
.chan{text-align:center;color:var(--xam);font-size:14px;padding:26px 16px 40px;border-top:1px solid var(--vien);margin-top:20px}
.chan a{color:var(--xam)}

/* ---------- trang khoá ---------- */
.khung{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:290px minmax(0,1fr);gap:28px;padding:24px 16px}
.muc{position:sticky;top:64px;align-self:start;max-height:calc(100vh - 80px);overflow:auto;background:var(--the);border:1px solid var(--vien);border-radius:14px;padding:14px}
.muc h3{margin:4px 6px 10px;font-size:18px}
.muc a{display:flex;gap:8px;align-items:flex-start;padding:7px 8px;border-radius:9px;text-decoration:none;color:var(--muc);font-size:15px;line-height:1.4}
.muc a:hover,.muc a.dang{background:var(--vang-nhat)}
.muc a .dau{flex:none;width:20px;height:20px;border-radius:50%;border:2px solid var(--vien);margin-top:1px}
.muc a.xong .dau{background:var(--xanh);border-color:var(--xanh)}
.muc a.bi-khoa span:last-child::after{content:" 🔒";font-size:12px}
.noi{min-width:0}
.bang-khoa{background:var(--cam-nhat);border:1px solid var(--vien);border-radius:14px;padding:14px 18px;margin-bottom:20px}
.bai{background:var(--the);border:1px solid var(--vien);border-radius:16px;padding:28px clamp(16px,4vw,40px);margin-bottom:28px;scroll-margin-top:70px}
.bai > .nhan{font-size:13px;font-weight:800;letter-spacing:.12em;color:var(--vang);text-transform:uppercase}
.bai h2{margin:4px 0 2px;font-size:clamp(24px,4vw,32px)}
.bai .phu{color:var(--xam);margin:0 0 18px}
.bai h3{font-size:21px;margin:26px 0 8px}
.danh-dau{margin-top:22px;display:flex;gap:10px;flex-wrap:wrap}

/* ---------- nút ---------- */
.nut{display:inline-block;border:2px solid var(--do);background:var(--do);color:#fff;border-radius:10px;padding:9px 16px;font-weight:700;cursor:pointer;font-size:15px;text-decoration:none;line-height:1.3}
.nut:hover{filter:brightness(1.08)}
.nut.phu{background:transparent;color:var(--do)}
.nut.da{background:var(--xanh);border-color:var(--xanh)}
.nut:disabled{opacity:.4;cursor:default}
.lien-ket{background:none;border:0;color:var(--do);text-decoration:underline;cursor:pointer;font-size:inherit;padding:0}

/* ---------- khối nội dung bài ---------- */
.trich{margin:18px 0;padding:16px 18px 16px 38px;background:var(--kem);border-left:5px solid var(--do);position:relative;font-family:"Playfair Display",Georgia,serif;font-style:italic;font-size:19px;color:var(--do-dam);border-radius:0 10px 10px 0;line-height:1.5}
.trich::before{content:"“";position:absolute;left:10px;top:-6px;font-size:46px;color:var(--vang)}
.trich .ai{display:block;font-family:"Be Vietnam Pro",sans-serif;font-style:normal;font-size:14px;color:var(--xam);margin-top:6px}
.hop{border:1px solid var(--vien);border-radius:12px;padding:16px 18px;margin:16px 0;background:var(--the)}
.hop .tieu{font-weight:800;font-size:13px;letter-spacing:.1em;margin-bottom:8px;text-transform:uppercase}
.hop.loi-co{background:var(--cam-nhat)} .hop.loi-co .tieu{color:#b07a22}
.hop.tu-duy{background:var(--hong-nhat)} .hop.tu-duy .tieu{color:var(--do)}
.hop.hanh-dong,.hop.lam{background:var(--xanh-nhat)} .hop.hanh-dong .tieu,.hop.lam .tieu{color:var(--xanh)}
.hop.nhin .tieu{color:var(--do)}
.hop.nghe{background:var(--cam-nhat)} .hop.nghe .tieu{color:#b07a22}
.hop.canh-bao{border-color:#e0a2a9;background:var(--hong-nhat)} .hop.canh-bao .tieu{color:var(--do)}
.hop ul,.hop ol{margin:0;padding-left:22px}
.hop li{margin-bottom:4px}
.hop .to{font-family:"Playfair Display",serif;font-size:24px;font-weight:700;color:var(--do-dam);margin:4px 0;text-align:center}
.bang{width:100%;border-collapse:collapse;margin:14px 0;font-size:15px;display:block;overflow-x:auto}
.bang th{background:var(--do);color:#fff;text-align:left;padding:9px 11px}
.bang td{padding:9px 11px;border-bottom:1px solid var(--vien);vertical-align:top}
.bang tr:nth-child(even) td{background:var(--kem)}
.hinh{margin:18px 0;text-align:center}
.hinh svg{width:100%;max-height:340px}
.hinh .chu{font-size:14px;color:var(--xam);font-style:italic}
.check{list-style:none;padding-left:0!important}
.check li{padding-left:28px;position:relative}
.check li::before{content:"";position:absolute;left:0;top:5px;width:16px;height:16px;border:2px solid var(--xanh);border-radius:4px}
.mau{background:var(--dong);color:var(--dong-chu);border-radius:12px;padding:16px 20px;margin:16px 0}
.mau .nhan{color:var(--vang);font-weight:700;font-size:12px;letter-spacing:.2em;display:block;margin-bottom:6px}
.mau b{color:#ffd88a}
.ghi-chu-nho{font-size:14px;color:var(--xam)}
.loi-mau{font-style:italic;background:var(--the);border-radius:10px;padding:12px 16px;border:1px dashed var(--vien)}
.chuoi li{margin-bottom:8px}
.cho-noi-dung{border:1px dashed var(--vien);border-radius:12px;padding:16px;color:var(--xam);text-align:center}

/* âm thanh */
.am{margin:10px 0}
.am-ten{font-weight:600;font-size:15px;margin-bottom:4px}
audio{width:100%;max-width:520px;height:40px}

/* câu đố */
.cau-do{border:2px solid var(--vang);border-radius:14px;padding:14px 16px;margin:22px 0;background:var(--kem)}
.cau-do .q{font-weight:700;margin:0 0 10px}
.cau-do .q::before{content:"❓ "}
.cau-do button{display:block;width:100%;text-align:left;margin:6px 0;padding:10px 12px;border:1px solid var(--vien);border-radius:10px;background:var(--the);color:var(--muc);cursor:pointer;font-size:15.5px}
.cau-do button.dung{border-color:var(--xanh);background:var(--xanh-nhat);font-weight:700}
.cau-do button.sai{border-color:var(--do);background:var(--hong-nhat)}
.cau-do .giai{color:var(--xanh);font-weight:600;margin:8px 0 0}

/* ---------- công cụ, biểu mẫu ---------- */
.cong-cu{border:2px dashed var(--vang);border-radius:14px;padding:18px;margin:20px 0;background:var(--kem)}
.cong-cu h4{margin:0 0 8px;font-size:18px;color:var(--do-dam)}
.do-giong{display:flex;gap:10px;align-items:flex-end;height:120px;margin:28px 0 12px}
.do-giong .cot{flex:1;background:var(--vang-nhat);border-radius:8px;position:relative;height:100%}
.do-giong .cot i{position:absolute;bottom:0;left:0;right:0;background:var(--do);border-radius:8px;height:0;transition:height .08s}
.do-giong .cot span{position:absolute;top:-22px;left:0;right:0;text-align:center;font-size:12px;color:var(--xam)}
.ket{font-weight:700;min-height:1.6em}
.ket.dung{color:var(--xanh)}
textarea,input[type=text],input[type=search],input[type=tel],input[type=email],input[type=number],input[type=date],input[type=datetime-local],input[type=password],select{width:100%;font-family:inherit;font-size:16px;padding:10px 12px;border:1px solid var(--vien);border-radius:10px;background:var(--the);color:var(--muc)}
input[type=range]{width:100%;accent-color:var(--do)}
label{font-weight:700;display:block;margin:12px 0 4px}
.hang{display:flex;gap:8px}
.hang input{flex:1}
.hai-cot{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.nut-mic{margin:6px 0 0;border:1px solid var(--vien);background:var(--the);color:var(--muc);border-radius:999px;padding:4px 12px;cursor:pointer;font-size:15px}
.nut-mic.dang{background:var(--do);color:#fff;border-color:var(--do);animation:nhip 1s infinite}
@keyframes nhip{50%{opacity:.6}}

/* khoá */
.khoa-lai{border:2px solid var(--vang);border-radius:16px;padding:20px;text-align:center;background:var(--kem);margin:18px 0}
.o-khoa-to{font-size:40px}
.khoa-lai .nut{margin:4px}
.o-kich-hoat{max-width:460px;margin:12px auto 0;text-align:left}
.o-kich-hoat .kq{min-height:1.4em;margin-top:6px;font-weight:600}
.o-kich-hoat .kq.dung{color:var(--xanh)} .o-kich-hoat .kq.sai{color:var(--do)}

/* ---------- Phòng tập ---------- */
.vung{max-width:980px;margin:0 auto;padding:22px 16px 40px}
.loc{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.chip{border:1px solid var(--vien);background:var(--the);color:var(--muc);border-radius:999px;padding:6px 14px;cursor:pointer;font-size:14.5px}
.chip.chon{background:var(--do);color:#fff;border-color:var(--do)}
.tim{margin-bottom:16px}
.luoi-qt{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.the-qt{position:relative;background:var(--the);border:1px solid var(--vien);border-radius:14px;padding:16px;text-decoration:none;color:var(--muc);display:flex;flex-direction:column;gap:6px;box-shadow:var(--bong)}
.the-qt:hover{border-color:var(--vang)}
.the-qt b{font-size:17px;color:var(--do-dam);line-height:1.35}
.the-qt .mo{font-size:14.5px;color:var(--xam)}
.nhom-nho{font-size:12.5px;font-weight:700;color:var(--vang);text-transform:uppercase;letter-spacing:.06em}
.nhan-qt{font-size:13px;color:var(--xam)}
.the-qt.khoa{opacity:.85}
.o-khoa{position:absolute;top:12px;right:12px;font-size:12px;background:var(--vang-nhat);border-radius:999px;padding:2px 8px}
.tieu-muc{font-size:22px;margin:30px 0 10px}
.nhat-ky{display:flex;flex-direction:column;gap:6px}
.dong-nk{display:grid;grid-template-columns:110px 1fr auto;gap:10px;padding:8px 12px;background:var(--the);border:1px solid var(--vien);border-radius:10px;font-size:15px;align-items:center}
.quay-lai{display:inline-block;margin-bottom:6px;text-decoration:none;font-weight:600}
.ten-qt{margin:4px 0 2px;font-size:clamp(26px,4.5vw,36px)}
.nguon{color:var(--xam);margin:0 0 10px;font-size:15px}
.mo-ta-qt{font-size:18px}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin:20px 0 0;border-bottom:2px solid var(--vien)}
.tab{border:0;background:transparent;color:var(--muc);padding:10px 14px;font-weight:700;cursor:pointer;font-size:15.5px;border-radius:10px 10px 0 0}
.tab.chon{background:var(--do);color:#fff}
#khu-che-do{padding-top:6px}
.buoc-tu-tap{padding-left:22px}
.buoc-tu-tap > li{margin:12px 0}
.o-buoc{display:flex;gap:8px;align-items:flex-start;font-weight:400;margin:0}
.o-buoc input{width:20px;height:20px;margin-top:4px;accent-color:var(--xanh)}
.buoc-tu-tap p{margin:4px 0 0 28px;color:var(--muc)}
ul.hoi{margin:6px 0 0 28px;color:var(--xam);font-style:italic}
.coach-dau{display:flex;justify-content:space-between;font-weight:700;color:var(--xam);margin:10px 0 6px}
.the-buoc{background:var(--the);border:1px solid var(--vien);border-radius:16px;padding:20px;margin:14px 0;box-shadow:var(--bong)}
.the-buoc h3{margin:0 0 8px;font-size:24px}
.loi-dan{font-size:19px;line-height:1.75}
.cau-hoi{background:var(--kem);border-radius:12px;padding:12px 16px;margin:12px 0;font-size:18px}
.cau-hoi .tieu{font-size:12.5px;font-weight:800;letter-spacing:.1em;color:var(--vang);text-transform:uppercase;margin-bottom:6px}
.dieu-huong{display:flex;justify-content:space-between;gap:10px}
.hoi-thoai{display:flex;flex-direction:column;gap:10px;margin:14px 0}
.tin{max-width:85%;border-radius:14px;padding:10px 14px}
.tin p{margin:2px 0}
.tin .ai{font-size:12.5px;font-weight:700;opacity:.75}
.tin.coach{align-self:flex-end;background:var(--do);color:#fff}
.tin.khach{align-self:flex-start;background:var(--the);border:1px solid var(--vien)}
.dieu-khien-ka{margin-top:10px}

/* ---------- Thử thách 21 ngày ---------- */
.luoi-21{display:grid;grid-template-columns:repeat(7,1fr);gap:8px;max-width:520px;margin:0 auto 18px}
.o-ngay{aspect-ratio:1;border-radius:12px;border:2px solid var(--vien);background:var(--the);color:var(--muc);font-weight:800;font-size:16px;cursor:pointer}
.o-ngay.do-dang{background:var(--vang-nhat);border-color:var(--vang)}
.o-ngay.xong{background:var(--xanh);border-color:var(--xanh);color:#fff}
.o-ngay.nay{box-shadow:0 0 0 3px var(--do)}
.o-ngay.chon{transform:scale(1.08)}
.o-ngay.khoa{opacity:.45}
.the-ngay{background:var(--the);border:1px solid var(--vien);border-radius:16px;padding:20px;box-shadow:var(--bong)}
.the-ngay .nhan{font-size:13px;font-weight:800;letter-spacing:.12em;color:var(--vang);text-transform:uppercase}
.the-ngay h2{margin:4px 0 12px}
.viec{display:flex;gap:10px;align-items:center;font-weight:400;margin:14px 0 4px}
.viec input{width:22px;height:22px;accent-color:var(--xanh)}
.lo-trinh{columns:2;column-gap:28px}

/* ---------- Sổ khách ---------- */
.thanh-cong-cu{display:flex;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.thanh-cong-cu .tim{flex:1;min-width:200px;margin:0}
.ds-khach{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.the-khach{background:var(--the);border:1px solid var(--vien);border-radius:12px;padding:14px;text-decoration:none;color:var(--muc);display:flex;flex-direction:column;gap:4px}
.the-khach b{color:var(--do-dam);font-size:17px}
.the-khach span{font-size:14.5px;color:var(--xam)}
.ghi-buoi{white-space:pre-wrap;font-family:inherit;background:var(--kem);padding:10px;border-radius:8px;font-size:15px}
details summary{cursor:pointer}
details.hop > summary.tieu{display:list-item}
.khung-pin{max-width:360px;margin:30px auto}

/* ---------- Gói ---------- */
.luoi-goi{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));margin-bottom:20px}
.the-goi{background:var(--the);border:1px solid var(--vien);border-radius:16px;padding:18px;display:flex;flex-direction:column;gap:6px;box-shadow:var(--bong);scroll-margin-top:80px}
.the-goi:target{border-color:var(--vang);box-shadow:0 0 0 3px var(--vang)}
.the-goi h3{margin:0;font-size:20px}
.the-goi p{margin:0;color:var(--xam);font-size:15px;flex:1}
.gia{font-size:24px;font-weight:800;color:var(--do)}
.gia small{font-size:14px;font-weight:600;color:var(--xam)}
.don-luoi{display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:start}
.qr{border-radius:12px;background:#fff;padding:6px;border:1px solid var(--vien)}
.ma-don{font-family:ui-monospace,monospace;background:var(--vang-nhat);padding:2px 8px;border-radius:6px}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) scale(.9);background:var(--vang);color:#2a1a08;font-weight:800;padding:12px 22px;border-radius:999px;opacity:0;transition:.2s;pointer-events:none;z-index:50;max-width:90vw;text-align:center}
.toast.hien{opacity:1;transform:translateX(-50%) scale(1)}

@media (max-width:1080px){
  .top .menu{display:none;position:absolute;top:100%;left:0;right:0;background:#7a1220;flex-direction:column;padding:8px 12px 12px;margin:0}
  body.mo-menu .top .menu{display:flex}
  .nut-menu{display:block}
}
@media (max-width:900px){
  .khung{grid-template-columns:1fr}
  .muc{position:static;max-height:42vh}
}
@media (max-width:600px){
  body{font-size:16.5px}
  .hai-cot{grid-template-columns:1fr}
  .don-luoi{grid-template-columns:1fr}
  .qr{margin:0 auto}
  .lo-trinh{columns:1}
  .dong-nk{grid-template-columns:1fr;gap:2px}
  .tin{max-width:95%}
  .top{padding:8px 12px;gap:8px}
  .top .ten{font-size:15px;overflow:hidden;text-overflow:ellipsis;min-width:0}
  .top .neo{padding:6px 10px;font-size:0}
  .top .neo::after{content:"⚡";font-size:16px}
}
@media print{
  .top,.muc,.danh-dau,.neo,.nut,.nut-mic,.cau-do,.khoa-lai,.chan{display:none!important}
  .khung{display:block}
  body{background:#fff;color:#000}
  .bai{border:0;page-break-after:always}
}

/* =====================================================================
   GIAO DIỆN SÁNG 2.0 — tươi, dễ đọc, VAK rõ ràng (ghi đè phần trên)
   ===================================================================== */
body{font-size:18px;background:linear-gradient(180deg,#fff7f0 0,#fffdf9 420px)}
/* thanh trên ĐỎ (sếp duyệt), phần dưới SÁNG */
.top{background:#9b1c2c;color:#fff;box-shadow:0 2px 12px rgba(0,0,0,.15)}
.top a,.top .ten{color:#fff}
.top .menu a{color:#fff;opacity:.95}
.top .menu a:hover,.top .menu a.dang{background:rgba(255,255,255,.18);color:#fff}
.nut-menu{border-color:rgba(255,255,255,.6);color:#fff}
@media (max-width:1080px){ .top .menu{background:#8a1726} }
.hero{background:linear-gradient(160deg,#7a1220,#9b1c2c 55%,#b3283a);color:#fff;padding:54px 16px 70px}
.hero h1{color:#fff}
.hero p{color:#fff;opacity:.95;font-size:19px}
.hero .tom{color:#fff;opacity:.85}

/* thẻ khoá: mỗi khoá một màu */
.the{border:0;border-top:6px solid var(--mau,#c0392b);box-shadow:0 10px 30px rgba(43,43,51,.08)}
.the[data-khoa="chien-binh"]{--mau:#e0533d}
.the[data-khoa="coaching"]{--mau:#e8862a}
.the[data-khoa="thoi-mien"]{--mau:#7b5cd6}
.the[data-khoa="master"]{--mau:#1f8a8a}
.the .so{color:var(--mau)}
.the h2{color:#2b2b33}
.thanh i{background:linear-gradient(90deg,#f6b73c,#e8862a)}
.the-tap{border:0;box-shadow:0 10px 30px rgba(43,43,51,.07)}
.the-tap .bieu{width:58px;height:58px;border-radius:16px;display:grid;place-items:center;background:var(--vang-nhat);font-size:30px}

/* cột bài đọc hẹp, chữ to — dễ đọc */
@media (min-width:901px){ .khung{grid-template-columns:280px minmax(0,1fr)} }
.noi{max-width:820px}
.muc{border:0;box-shadow:0 6px 20px rgba(43,43,51,.06)}
.muc a.dang{background:var(--hong-nhat);font-weight:600}
.bai{border:0;box-shadow:0 10px 34px rgba(43,43,51,.07);padding:32px clamp(18px,4vw,46px)}
.bai > .nhan{display:inline-block;background:var(--hong-nhat);color:var(--do);padding:3px 12px;border-radius:999px;letter-spacing:.06em}
.bai h2{color:#2b2b33}
.bai h3{color:var(--do-dam)}
.bai p,.bai li{line-height:1.8}
.bang-khoa{background:#fff;border:0;box-shadow:0 6px 20px rgba(43,43,51,.06)}

/* ===== VAK: 3 màu riêng ===== */
.hop{border-radius:16px;border-width:2px;padding:18px 20px}
.hop .tieu{font-size:14px;letter-spacing:.06em;display:flex;align-items:center;gap:8px}
.hop.nhin{background:var(--lam-nhat);border-color:#c9dcf6}
.hop.nhin .tieu{color:var(--lam)}
.hop.nghe{background:#fff6e5;border-color:#f6d9a3}
.hop.nghe .tieu{color:#b0650b}
.hop.lam,.hop.hanh-dong{background:var(--xanh-nhat);border-color:#bfe5cb}
.hop.lam .tieu,.hop.hanh-dong .tieu{color:var(--xanh)}
.hop.tu-duy{background:#fff1ef;border-color:#f7cfc8}
.hop.loi-co{background:#fff8ec;border-color:#f3dfb8}
.hop.canh-bao{background:#fff4f2;border-color:#f3b9b0}
.hinh svg{background:#fff;border-radius:14px}
.trich{background:#fff;border-left-color:var(--do);box-shadow:0 4px 16px rgba(43,43,51,.05)}
.mau{background:#fff3e6;color:var(--muc);border:2px solid #f6d9a3}
.mau .nhan{color:#b0650b}
.mau b{color:var(--do-dam)}
.cau-do{background:#fffaf0;border-color:#f6c76b}
.cong-cu{background:#fffaf0}
.loi-mau{background:#fff;font-size:18px}

/* thanh VAK đầu mỗi bài */
.thanh-vak{display:flex;flex-wrap:wrap;gap:8px;margin:4px 0 18px}
.thanh-vak button{border:0;border-radius:999px;padding:9px 16px;font-size:15.5px;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;gap:6px}
.thanh-vak .v{background:var(--lam-nhat);color:var(--lam)}
.thanh-vak .a{background:#fff1d6;color:#a35a00}
.thanh-vak .k{background:var(--xanh-nhat);color:var(--xanh)}
.thanh-vak .q{background:#fff0ee;color:var(--do)}
.thanh-vak button:hover{filter:brightness(.96)}
.thanh-vak .a.dang{background:#e8862a;color:#fff}
.trong-bai{background:#fff;border:2px dashed var(--vien);border-radius:14px;padding:12px 16px;margin:0 0 18px;font-size:16px}
.trong-bai b{color:var(--do-dam)}
.trong-bai ol{margin:6px 0 0;padding-left:22px}
.trong-bai a{color:var(--muc);text-decoration:none;border-bottom:1px dotted var(--xam)}
.dang-doc{background:#fff3c4;border-radius:6px;transition:background .3s}

/* nút & thẻ khác */
.nut{border-radius:12px;padding:10px 18px}
.chip.chon,.tab.chon{background:var(--do)}
.the-qt,.the-goi,.the-ngay,.the-buoc,.the-khach,.dong-nk{border:0;box-shadow:0 8px 24px rgba(43,43,51,.07)}
.tin.coach{background:var(--do)}
.o-ngay{border-color:#f0e2cf}
.chan{background:#fff;border-top:0}

/* ===== ĐIỂM, TÀI KHOẢN trên thanh trên ===== */
.chip-xp{background:rgba(255,255,255,.18);border-radius:999px;padding:5px 12px;font-size:14px;font-weight:700;white-space:nowrap;color:#fff!important}
.chip-xp b{color:#ffe08a}
.nut-tk{background:#fff;color:var(--do-dam)!important;border-radius:999px;min-width:34px;height:34px;padding:0 10px;display:inline-grid;place-items:center;font-size:15px;font-weight:800;white-space:nowrap}
@media (max-width:600px){ .chip-xp{padding:4px 8px;font-size:12.5px} .top .ten{max-width:120px} }
.on-tap-khoa{display:block;text-align:center;margin-top:12px;background:linear-gradient(135deg,#7b5cd6,#e0533d);border:0}

/* ===== ÔN TẬP: SẢNH ===== */
.vung.hep{max-width:620px}
.the-cap{display:flex;gap:16px;align-items:center;background:#fff;border-radius:20px;padding:18px 20px;box-shadow:0 10px 30px rgba(43,43,51,.08);margin-bottom:14px}
.the-cap.nho{padding:12px 16px}
.cap-bieu{font-size:46px;line-height:1;width:72px;height:72px;border-radius:20px;display:grid;place-items:center;background:linear-gradient(135deg,#fff3dc,#ffe0d6)}
.the-cap.nho .cap-bieu{width:54px;height:54px;font-size:32px}
.cap-noi{flex:1;min-width:0}
.cap-ten{font-size:18px}
.thanh.to{height:14px;margin:8px 0}
.cap-chuoi{text-align:center}
.so-lon{font-size:30px;font-weight:800;color:var(--do-dam)}
.muc-tieu-ngay{background:#fff;border-radius:14px;padding:10px 16px;box-shadow:0 6px 18px rgba(43,43,51,.06);margin-bottom:16px;font-weight:700}
.muc-tieu-ngay .thanh{margin-top:6px;height:10px}
.luoi-game{display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));margin:8px 0 10px}
.the-game{border:0;border-radius:22px;padding:22px;text-align:left;cursor:pointer;color:#fff;display:flex;flex-direction:column;gap:6px;box-shadow:0 12px 28px rgba(43,43,51,.14);transition:transform .15s;font-size:15.5px}
.the-game:hover{transform:translateY(-4px) rotate(-.5deg)}
.the-game .bieu{font-size:40px}
.the-game b{font-size:22px;font-family:"Playfair Display",serif}
.the-game em{font-style:normal;opacity:.85;font-size:13.5px}
.g1 .the-game,.the-game.g1{background:linear-gradient(135deg,#f6b73c,#e0533d)}
.the-game.g2{background:linear-gradient(135deg,#7b5cd6,#4a6cf0)}
.the-game.g3{background:linear-gradient(135deg,#1f8a8a,#1f8a4c)}
.luoi-huy{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
.huy{background:#fff;border-radius:16px;padding:12px;text-align:center;display:flex;flex-direction:column;gap:2px;opacity:.45;filter:grayscale(1);box-shadow:0 6px 16px rgba(43,43,51,.05)}
.huy.co{opacity:1;filter:none;border:2px solid #f6c76b}
.huy span{font-size:32px}
.huy small{color:var(--xam);font-size:12px}

/* ===== ÔN TẬP: MÀN CHƠI ===== */
.game-dau{display:flex;align-items:center;gap:12px;margin-bottom:10px;font-size:17px}
.game-dau b{flex:1}
.tim-ht{font-size:20px;letter-spacing:2px}
.diem-game{background:#fff3dc;border-radius:999px;padding:4px 12px;font-weight:800;transition:transform .2s}
.diem-game.nay{transform:scale(1.3)}
.tien-do{font-weight:700;color:var(--xam);margin-bottom:6px}
.combo{color:#e8862a;animation:nhip .6s infinite}
.dong-ho-game{height:8px;background:#f3e6d3;border-radius:9px;overflow:hidden;margin-bottom:12px}
.dong-ho-game i{display:block;height:100%;width:100%;background:linear-gradient(90deg,#1f8a4c,#f6b73c,#e0533d)}
.the-cau{background:#fff;border-radius:22px;padding:22px;box-shadow:0 12px 32px rgba(43,43,51,.09)}
.the-cau .q{font-size:21px;font-weight:700;margin:0 0 6px;line-height:1.45}
.lua-chon{display:grid;gap:10px;margin-top:14px}
.lua-chon button{display:flex;gap:12px;align-items:center;text-align:left;border:2px solid var(--vien);background:#fff;border-radius:14px;padding:12px 14px;font-size:17px;cursor:pointer;color:var(--muc)}
.lua-chon button span{flex:none;width:32px;height:32px;border-radius:10px;background:#fff3dc;display:grid;place-items:center;font-weight:800;color:#a35a00}
.lua-chon button:hover:not(:disabled){border-color:#f6b73c;transform:translateX(3px)}
.lua-chon button.dung{border-color:#1f8a4c;background:#ecf8ef}
.lua-chon button.dung span{background:#1f8a4c;color:#fff}
.lua-chon button.sai{border-color:#e0533d;background:#fff0ee}
.giai-thich{margin:14px 0 0;font-weight:600}
.rung{animation:rung .45s}
@keyframes rung{20%,60%{transform:translateX(-8px)}40%,80%{transform:translateX(8px)}}
.ket-qua{text-align:center;background:#fff;border-radius:24px;padding:30px 20px;box-shadow:0 12px 32px rgba(43,43,51,.09)}
.ket-qua .sao{font-size:48px;letter-spacing:6px}
.o-dap{padding-left:26px;margin:14px 0}
.o-dap li{min-height:44px;border:2px dashed var(--vien);border-radius:12px;margin:8px 0;padding:9px 12px;font-weight:600}
.o-dap li.co{border-style:solid;border-color:#7b5cd6;background:#f3efff;animation:hien .3s}
@keyframes hien{from{transform:scale(.9);opacity:.3}}
.manh,.cot-trai,.cot-phai{display:flex;flex-wrap:wrap;gap:10px}
.manh button,.hai-cot-ghep button{border:2px solid #d8cff5;background:#fff;border-radius:14px;padding:11px 14px;font-size:16px;cursor:pointer;color:var(--muc);font-weight:600;box-shadow:0 4px 0 #d8cff5}
.manh button:active,.hai-cot-ghep button:active{transform:translateY(2px);box-shadow:0 2px 0 #d8cff5}
.hai-cot-ghep{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:12px}
.cot-trai,.cot-phai{flex-direction:column}
.hai-cot-ghep .cot-trai button{border-color:#bfe5cb;box-shadow:0 4px 0 #bfe5cb}
.hai-cot-ghep button.dang{background:#fff3dc;border-color:#f6b73c}
.hai-cot-ghep button.xong{background:#ecf8ef;border-color:#1f8a4c;opacity:.75;box-shadow:none}
.phao-hoa{position:fixed;inset:0;pointer-events:none;z-index:60}

/* ===== ĐĂNG NHẬP ===== */
.the-form{background:#fff;border-radius:0 18px 18px 18px;padding:20px;box-shadow:0 10px 30px rgba(43,43,51,.08)}
.nut.to{width:100%;padding:13px;font-size:17px}
.ds-quyen{list-style:none;padding:0!important}
.ds-quyen li{padding:6px 0;border-bottom:1px dashed var(--vien)}
.ds-quyen li.dong{color:var(--xam)}
.ds-quyen small{color:var(--xam)}

/* ===== SỔ KHÁCH nâng cấp ===== */
.so-crm{display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));margin-bottom:16px}
.so-crm div{background:#fff;border-radius:16px;padding:12px 14px;box-shadow:0 6px 18px rgba(43,43,51,.06);font-size:13.5px;color:var(--xam)}
.so-crm b{display:block;font-size:26px;color:var(--do-dam)}
.bd-tien-bo{width:100%;background:#fff;border-radius:12px}
@media print{ .so-crm,.tai-ics,.nhac-zalo{display:none!important} }
input:not([type]){width:100%;font-family:inherit;font-size:16px;padding:10px 12px;border:1px solid var(--vien);border-radius:10px;background:var(--the);color:var(--muc)}
.nut-tk.chua-dn{font-size:13.5px}
.the-tap{position:relative}

/* ===== ĐẶT LỊCH COACH ===== */
.gioi-thieu{display:grid;grid-template-columns:minmax(0,340px) 1fr;gap:28px;align-items:center;background:#fff;border-radius:24px;padding:22px;box-shadow:0 12px 32px rgba(43,43,51,.08)}
.anh-gt{width:100%;height:auto;border-radius:20px;border:4px solid #f6d9a3}
.nhan-gt{display:inline-block;background:var(--hong-nhat);color:var(--do);border-radius:999px;padding:3px 12px;font-weight:700;font-size:14px;margin:0}
.gioi-thieu h2{font-size:clamp(28px,4vw,38px);margin:6px 0 10px}
.gt-ds{list-style:none;padding:0;margin:0 0 12px}.gt-ds li{padding:4px 0}
.cac-buoc-lich{counter-reset:b;list-style:none;padding:0}
.cac-buoc-lich li{counter-increment:b;position:relative;padding:12px 14px 12px 58px;background:#fff;border-radius:14px;margin:10px 0;box-shadow:0 6px 18px rgba(43,43,51,.05)}
.cac-buoc-lich li::before{content:counter(b);position:absolute;left:14px;top:10px;width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,#e0533d,#f6b73c);color:#fff;font-weight:800;display:grid;place-items:center}
.the-form-lich{scroll-margin-top:80px;margin-top:24px}
@media (max-width:700px){ .gioi-thieu{grid-template-columns:1fr} .anh-gt{max-width:320px;margin:0 auto;display:block} }

/* ===== KHUNG QUẢNG CÁO ĐẶT LỊCH COACH (trang chủ) ===== */
.qc-coach{display:grid;grid-template-columns:minmax(0,380px) 1fr;gap:0;border-radius:28px;overflow:hidden;text-decoration:none;color:#fff;background:linear-gradient(135deg,#7a1220 0%,#9b1c2c 45%,#c0392b 75%,#e8862a 100%);box-shadow:0 18px 40px rgba(155,28,44,.28);transition:transform .2s}
.qc-coach:hover{transform:translateY(-4px)}
.qc-coach img{width:100%;height:100%;object-fit:cover;object-position:50% 15%;min-height:360px;display:block}
.qc-noi{padding:34px clamp(20px,4vw,48px);display:flex;flex-direction:column;justify-content:center;gap:10px}
.qc-nhan{align-self:flex-start;background:rgba(255,255,255,.18);border-radius:999px;padding:5px 14px;font-weight:700;font-size:15px}
.qc-coach h2{color:#fff;font-size:clamp(28px,4.2vw,44px);margin:4px 0}
.qc-coach p{color:#fff;opacity:.95;font-size:18px;margin:0}
.qc-coach ul{list-style:none;padding:0;margin:6px 0;display:flex;flex-wrap:wrap;gap:8px}
.qc-coach li{background:rgba(255,255,255,.16);border-radius:999px;padding:6px 14px;font-size:15.5px;font-weight:600}
.qc-nut{align-self:flex-start;background:#fff!important;color:#9b1c2c!important;border-color:#fff!important;font-size:19px;padding:13px 26px;margin-top:8px;box-shadow:0 6px 18px rgba(0,0,0,.18);animation:nhay 2.4s ease-in-out infinite}
@keyframes nhay{0%,100%{transform:scale(1)}50%{transform:scale(1.05)}}
@media (max-width:760px){ .qc-coach{grid-template-columns:1fr} .qc-coach img{min-height:0;max-height:420px} }
@media (max-width:480px){ .chip-xp{display:none} .top .ten{max-width:150px} .nut-tk.chua-dn{font-size:12.5px;padding:0 9px} }

/* ===== SỔ KHÁCH COACH (bản máy chủ): bảng khách + phiếu SCORE ===== */
.vung.rong{max-width:1180px}
.khung-bang{background:#fff;border-radius:16px;box-shadow:0 8px 24px rgba(43,43,51,.07);overflow-x:auto;margin-bottom:18px}
.bang-khach{width:100%;border-collapse:collapse;font-size:15px}
.bang-khach th{text-align:left;font-size:13px;text-transform:uppercase;letter-spacing:.03em;color:var(--xam);background:var(--kem);padding:12px 14px;border-bottom:1px solid var(--vien);white-space:nowrap}
.bang-khach td{padding:12px 14px;border-bottom:1px solid #f6ede1;vertical-align:top;color:var(--muc)}
.bang-khach tbody tr{cursor:pointer;transition:background .15s}
.bang-khach tbody tr:hover{background:var(--hong-nhat)}
.bang-khach td a{color:var(--do-dam);text-decoration:none}
.bang-khach td small{display:block;color:var(--xam);font-size:13px;margin-top:2px}
.bang-khach .giam{color:var(--xanh);font-weight:700}
.khoa-nd{color:var(--xam);font-size:13.5px;font-style:italic}
.khung-bang .cho-noi-dung{margin:18px}
.nhan-score{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:7px;color:#fff;font-weight:800;font-size:13px;vertical-align:middle}
.nhan-score.s{background:#e0533d}.nhan-score.c{background:#e0a33a}.nhan-score.o{background:#1f8a4c}.nhan-score.r{background:#2563b0}.nhan-score.e{background:#8e44ad}
.bang-score{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));margin-bottom:16px}
.o-score{display:flex;flex-direction:column;gap:8px;background:#fff;border-radius:16px;padding:14px;border-top:5px solid #ccc;box-shadow:0 6px 18px rgba(43,43,51,.06);margin:0}
.o-score.s{border-color:#e0533d;background:linear-gradient(#fff6f4,#fff 60%)}.o-score.c{border-color:#e0a33a;background:linear-gradient(#fff8ea,#fff 60%)}
.o-score.o{border-color:#1f8a4c;background:linear-gradient(#effaf2,#fff 60%)}.o-score.r{border-color:#2563b0;background:linear-gradient(#eef5ff,#fff 60%)}
.o-score.e{border-color:#8e44ad;background:linear-gradient(#f7effb,#fff 60%)}.o-score.ghi{border-color:var(--vien)}
.dau-score{font-weight:800;color:var(--muc);font-size:16px;display:flex;gap:8px;align-items:center}
.o-score textarea{margin:0;min-height:96px}
.luoi-o{display:grid;gap:0 14px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
.nhan-kh{display:inline-block;background:var(--kem);border:1px solid var(--vien);border-radius:999px;padding:4px 12px;font-size:14px;margin:2px 2px 2px 0;color:var(--muc)}
.nhan-kh .giam{color:var(--xanh);font-weight:700}
.dong-giao{display:grid;grid-template-columns:1fr auto auto;gap:10px;align-items:center;padding:10px 0;border-bottom:1px dashed var(--vien)}
.dong-giao select{margin:0;min-width:150px}
.dong-giao small{color:var(--xam)}
.thanh-cong-cu select{margin:0;width:auto;min-width:150px}
@media (max-width:720px){
  .bang-khach thead{display:none}
  .bang-khach,.bang-khach tbody,.bang-khach tr,.bang-khach td{display:block;width:100%}
  .bang-khach tr{padding:10px 4px;border-bottom:1px solid var(--vien)}
  .bang-khach td{border:0;padding:4px 12px;display:grid;grid-template-columns:110px 1fr;gap:8px}
  .bang-khach td::before{content:attr(data-nhan);color:var(--xam);font-size:13px}
  .bang-khach td[data-nhan="Khách"]{display:block;font-size:17px}
  .bang-khach td[data-nhan="Khách"]::before{content:none}
  .dong-giao{grid-template-columns:1fr}
  .bang-score{grid-template-columns:1fr}
}

/* Bảo vệ nội dung bài học: không bôi đen / copy / in */
.cam-chep body{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.cam-chep input,.cam-chep textarea,.cam-chep select,.cam-chep [contenteditable]{-webkit-user-select:text;user-select:text}
.cam-chep img{-webkit-user-drag:none;pointer-events:auto}
@media print{ .cam-chep body *{display:none!important} .cam-chep body::after{content:"Nội dung bài học thuộc bản quyền Nguyễn Huyền Kita — không in được.";display:block;padding:40px;font-size:18px} }
.qc-coach p.qc-chuc-danh{display:inline-block;align-self:flex-start;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:6px 16px;font-size:17px;font-weight:700;letter-spacing:.01em;margin:2px 0 6px}
.chuc-danh{color:var(--do-dam);font-weight:700;font-size:18px;margin:-4px 0 10px}

/* Khung sự kiện "Bản đồ hạnh phúc, thịnh vượng" (trang chủ) — nền sáng, đỏ + vàng điểm nhấn */
/* Banner sự kiện — bản gọn ("vừa xinh") */
/* ===== Banner sự kiện "Bản đồ hạnh phúc, thịnh vượng" — 3 cột cao bằng nhau, nền sáng, đỏ + vàng điểm nhấn ===== */
.qc-kttv-khung.tren-dau{margin-top:6px;margin-bottom:30px}
.qc-kttv{display:grid;grid-template-columns:190px 1fr 230px;align-items:stretch;text-decoration:none;color:var(--muc);border-radius:22px;overflow:hidden;
  background:linear-gradient(120deg,#fffaf3 0%,#fff2e2 100%);border:1px solid #f1d9bb;box-shadow:0 12px 32px rgba(155,28,44,.10);transition:transform .2s,box-shadow .2s}
.qc-kttv:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(155,28,44,.16)}
.kttv-anh{width:100%;height:100%;min-height:240px;object-fit:cover;object-position:50% 14%;display:block}
.qc-coach img{object-position:45% 18%}
.kttv-noi{padding:20px 24px;display:flex;flex-direction:column;justify-content:center}
.kttv-nhan{align-self:flex-start;background:#9b1c2c;color:#fff;font-weight:700;border-radius:999px;padding:4px 12px;font-size:12.5px}
.qc-kttv h2{color:#9b1c2c;font-size:clamp(22px,2.5vw,29px);margin:8px 0 6px;line-height:1.2}
.kttv-loi{list-style:none;padding:0;margin:0 0 12px;display:grid;gap:2px}
.kttv-loi li{font-size:15px;color:#4a3f42;line-height:1.5}
.kttv-loi b{color:#b4232f}
.kttv-loi .kttv-dam{font-weight:700;color:#7a1220;margin-top:2px}
.kttv-lich{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;max-width:330px;margin-bottom:8px}
.o-buoi{background:#fff;border:1px solid #f1dcc2;border-radius:12px;padding:6px 4px;text-align:center}
.o-buoi small{display:block;font-size:10.5px;color:var(--xam);font-weight:700;letter-spacing:.05em;text-transform:uppercase}
.o-buoi b{display:block;font-size:19px;color:#9b1c2c;line-height:1.2;font-family:"Playfair Display",Georgia,serif}
.o-buoi span{font-size:12px;color:#4a3f42;font-weight:600}
.o-buoi.nay{background:#9b1c2c;border-color:#9b1c2c}.o-buoi.nay small,.o-buoi.nay b,.o-buoi.nay span{color:#fff}
.o-buoi.qua{opacity:.45}
.kttv-phu{margin:0;font-size:13.5px;color:#6a5a5e}
.kttv-phai{display:flex;flex-direction:column;justify-content:center;align-items:center;gap:10px;text-align:center;padding:20px 18px;background:rgba(255,255,255,.65);border-left:1px solid #f1d9bb}
.kttv-dem{font-size:13.5px;color:var(--xam)}.kttv-dem b{display:block;color:#9b1c2c;font-size:19px;margin-top:2px}
.qc-kttv .kttv-nut{background:linear-gradient(135deg,#c0392b,#9b1c2c);color:#fff;font-size:16px;font-weight:800;padding:12px 16px;width:100%;border-radius:12px;box-shadow:0 6px 14px rgba(155,28,44,.25)}
.kttv-phai small{color:var(--xam);font-size:13px}
@media (max-width:900px){ .qc-kttv{grid-template-columns:160px 1fr} .kttv-phai{grid-column:1 / -1;flex-direction:row;justify-content:space-between;border-left:0;border-top:1px solid #f1d9bb;padding:14px 20px} .qc-kttv .kttv-nut{width:auto} .kttv-phai small{display:none} }
@media (max-width:600px){
  .qc-kttv{grid-template-columns:1fr}
  .kttv-anh{height:160px;min-height:0;object-position:50% 10%}
  .kttv-loi li{font-size:14.5px}
  .kttv-noi{padding:16px}
  .kttv-lich{max-width:none}
  .kttv-phai{padding:14px 16px}
}
/* Trang chủ: Đặt lịch coach + Bản đồ hạnh phúc nằm ngay dưới phần đầu trang, trên 4 khoá học */
.qc-dau-trang{margin-top:28px}
.qc-kttv-khung.tren-dau{margin-top:0;margin-bottom:34px}
.cua.sau-qc{margin-top:0}
/* Nút to trong khung .hop (Gửi đặt lịch, Đăng nhập…): chữ trắng đậm, nổi trên nền đỏ — không ăn kiểu chữ số to của .hop .to */
.hop .nut.to,.nut.to{font-family:inherit;color:#fff;font-size:17.5px;font-weight:800;letter-spacing:.01em;margin:0;text-align:center;
  background:linear-gradient(135deg,#d0432f,#9b1c2c);border-color:#9b1c2c;box-shadow:0 8px 18px rgba(155,28,44,.25)}
.hop .nut.to:hover,.nut.to:hover{filter:brightness(1.06)}
.nut.to:disabled{opacity:.7;cursor:wait}