:root{
  --bg:#FFFFFF; --panel:#F1F6EF; --green-deep:#1E5C3B; --green-mid:#3E7A4C; --green-soft:#A8C9A0;
  --ink:#1E241B; --muted:#5b6553; --clay:#4FA65C; --clay-soft:#D9F0DA; --line:#E4EAE1; --gold:#D9A93F; --danger:#C0453B;
  --sans:'Be Vietnam Pro',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;
  --serif:'Lora',Georgia,'Times New Roman',serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}
main{flex:1}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3{font-family:var(--serif);color:var(--green-deep);letter-spacing:-.01em;line-height:1.2}
button{font-family:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:0 28px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--clay);outline-offset:2px}
.loading{padding:80px 0;text-align:center;color:var(--muted)}

/* ---------- nút tài khoản trên menu website ---------- */
header .nav-links a.nav-login{border:1.5px solid var(--green-deep);color:var(--green-deep);opacity:1;padding:8px 18px;border-radius:999px;font-weight:600;font-size:14px}
header .nav-links a.nav-login::after{display:none}
header .nav-links a.nav-login:hover{background:var(--green-deep);color:#fff}
@media (max-width:960px){header .nav-links a.nav-login{margin-top:14px;text-align:center;padding:12px 22px}}

/* ---------- nút / biểu mẫu ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:999px;border:2px solid transparent;font-size:15px;font-weight:600;cursor:pointer;transition:background .2s,color .2s,transform .2s;line-height:1.2;text-align:center}
.btn-primary{background:var(--green-deep);color:#fff}
.btn-primary:hover{background:var(--clay);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--green-deep);border-color:var(--green-deep)}
.btn-ghost:hover{background:var(--green-deep);color:#fff}
.btn-soft{background:var(--clay-soft);color:var(--green-deep)}
.btn-soft:hover{background:var(--green-deep);color:#fff}
.btn-danger{background:#fff;color:var(--danger);border-color:var(--danger)}
.btn-danger:hover{background:var(--danger);color:#fff}
.btn-gold{background:linear-gradient(135deg,#F6DC96,var(--gold));color:#4A3608}
.btn-sm{padding:8px 16px;font-size:13.5px}
.btn[disabled]{opacity:.5;cursor:default;transform:none}
.btn-block{display:flex;width:100%}

.field{display:flex;flex-direction:column;margin-bottom:16px}
.field label{font-size:13.5px;font-weight:600;color:var(--green-deep);margin-bottom:6px}
.field .hint{font-size:12.5px;color:var(--muted);margin-top:5px}
input[type=date],input[type=text],input[type=tel],input[type=email],input[type=password],input[type=number],input[type=search],select,textarea{
  font:400 15px/1.5 var(--sans);color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:12px;padding:11px 14px;width:100%}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--clay);box-shadow:0 0 0 3px var(--clay-soft)}
textarea{resize:vertical;min-height:90px}
.check{display:flex;gap:10px;align-items:flex-start;font-size:13.5px;color:var(--muted);margin:4px 0 18px}
.check input{width:17px;height:17px;margin-top:3px;accent-color:var(--green-deep);flex-shrink:0}
.err{background:#fdeceb;color:var(--danger);border-radius:12px;padding:10px 14px;font-size:14px;margin-bottom:14px}
.okmsg{background:var(--clay-soft);color:var(--green-deep);border-radius:12px;padding:10px 14px;font-size:14px;margin-bottom:14px}

/* ---------- bố cục chung ---------- */
.section{padding:56px 0}
.section.alt{background:var(--panel)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;letter-spacing:.14em;font-weight:600;text-transform:uppercase;color:var(--green-mid);margin-bottom:12px}
.eyebrow::before{content:'';width:26px;height:1px;background:var(--clay)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;flex-wrap:wrap}
.sec-head h2{font-size:clamp(26px,3.2vw,36px)}
.sec-head p{color:var(--muted);margin-top:8px;max-width:640px}
.link-more{font-size:14px;font-weight:600;color:var(--green-deep)}
.link-more:hover{color:var(--clay)}
.pagehead{background:linear-gradient(180deg,var(--panel),#fff);padding:44px 0 26px;border-bottom:1px solid var(--line)}
.pagehead h1{font-size:clamp(28px,4vw,40px)}
.pagehead p{color:var(--muted);margin-top:10px;max-width:680px}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:14px}
.crumbs a:hover{color:var(--clay)}

.hero-cta{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- thẻ khoá học ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;display:flex;flex-direction:column;box-shadow:0 10px 26px -20px rgba(30,60,40,.3);transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-4px);box-shadow:0 22px 38px -22px rgba(30,60,40,.4)}
.cover{position:relative;aspect-ratio:16/9;background:linear-gradient(135deg,#173a27,#3E7A4C);overflow:hidden}
.cover img{width:100%;height:100%;object-fit:cover}
.cover .ph{position:absolute;inset:0;display:grid;place-items:center;color:rgba(255,255,255,.9);font-family:var(--serif);font-size:22px;padding:18px;text-align:center;font-weight:600}
.tag{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.95);color:var(--green-deep);font-size:11.5px;font-weight:700;letter-spacing:.05em;padding:5px 12px;border-radius:999px}
.tag.paid{background:linear-gradient(135deg,#F6DC96,var(--gold));color:#4A3608}
.tag.mine{left:auto;right:12px;background:var(--green-deep);color:#fff}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.card-body h3{font-family:var(--sans);font-size:17px;font-weight:700;line-height:1.35;margin-bottom:6px}
.card-body p{font-size:13.8px;color:var(--muted);margin-bottom:14px;flex:1}
.meta{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin-bottom:14px}
.price{font-size:22px;font-weight:700;color:var(--green-deep)}
.price.free{font-size:15px;background:var(--clay-soft);padding:3px 12px;border-radius:999px}
.old{font-size:13px;color:#9a9382;text-decoration:line-through}
.small{font-size:13px;color:var(--muted)}
.empty{padding:40px 20px;text-align:center;color:var(--muted);background:var(--panel);border-radius:18px}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.tabs button{padding:9px 18px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:14px;font-weight:600;color:var(--green-deep);cursor:pointer}
.tabs button.on{background:var(--green-deep);color:#fff;border-color:var(--green-deep)}

/* ---------- chi tiết khoá ---------- */
.detail{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:36px;padding:36px 0 64px;align-items:start}
.detail .desc{color:#3a4032;font-size:16px;white-space:pre-line;margin:18px 0 26px}
.buybox{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:0 24px 46px -34px rgba(30,60,40,.5);position:sticky;top:92px}
.buybox .cover{border-radius:14px;margin-bottom:18px}
.lesson-list{list-style:none;border:1px solid var(--line);border-radius:18px;overflow:hidden}
.lesson-list li{display:flex;align-items:center;gap:14px;padding:14px 18px;border-bottom:1px solid var(--line);background:#fff}
.lesson-list li:last-child{border-bottom:none}
.lesson-list .num{flex:0 0 30px;height:30px;border-radius:50%;background:var(--panel);color:var(--green-deep);font-weight:700;font-size:13px;display:grid;place-items:center}
.lesson-list .t{flex:1;font-weight:500;font-size:15px}
.lesson-list .st{font-size:12.5px;color:var(--muted);white-space:nowrap}
.lesson-list li.done .num{background:var(--green-deep);color:#fff}
@media (max-width:860px){.detail{grid-template-columns:1fr}.buybox{position:static;order:-1}}

/* ---------- phòng học ---------- */
.player{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:28px;padding:28px 0 64px;align-items:start}
.video{position:relative;aspect-ratio:16/9;background:#0e1a12;border-radius:18px;overflow:hidden}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.video .novid{position:absolute;inset:0;display:grid;place-items:center;text-align:center;color:#d9f0da;padding:24px;font-size:15px}
.ptitle{margin:20px 0 8px;font-size:clamp(22px,2.6vw,30px)}
.pdesc{color:#3a4032;white-space:pre-line;margin-bottom:20px}
.pactions{display:flex;gap:10px;flex-wrap:wrap}
.side{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;position:sticky;top:92px}
.side-head{padding:16px 18px;background:var(--panel);border-bottom:1px solid var(--line)}
.side-head b{display:block;color:var(--green-deep);margin-bottom:8px;font-size:15px;line-height:1.35}
.prog{height:8px;border-radius:99px;background:#dfe9dc;overflow:hidden}
.prog i{display:block;height:100%;background:var(--clay);border-radius:99px;transition:width .4s}
.side ul{list-style:none;max-height:60vh;overflow:auto}
.side li a{display:flex;gap:12px;align-items:center;padding:12px 18px;border-bottom:1px solid var(--line);font-size:14.5px}
.side li a:hover{background:var(--panel)}
.side li.cur a{background:var(--clay-soft);font-weight:600}
.side li .ck{flex:0 0 22px;height:22px;border-radius:50%;border:2px solid var(--green-soft);display:grid;place-items:center;font-size:12px;color:#fff}
.side li.done .ck{background:var(--green-deep);border-color:var(--green-deep)}
.side li.locked a{opacity:.55}
@media (max-width:960px){.player{grid-template-columns:1fr}.side{position:static}}

/* ---------- đăng nhập ---------- */
.authbox{max-width:460px;margin:48px auto 72px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:34px 32px;box-shadow:0 30px 60px -40px rgba(30,60,40,.5)}
.authbox h1{font-size:30px;margin-bottom:6px}
.authbox .sub{color:var(--muted);font-size:14.5px;margin-bottom:22px}
.authbox .alt{margin-top:18px;font-size:14px;text-align:center;color:var(--muted)}
.authbox .alt a{color:var(--green-deep);font-weight:700}
.gg{margin-top:14px;padding:11px;border:1px dashed var(--line);border-radius:999px;text-align:center;font-size:13px;color:#8a8b78}
@media (max-width:520px){.authbox{margin:24px 14px 48px;padding:26px 20px}}

/* ---------- quản trị ---------- */
.admin{padding:28px 0 70px}
.atabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:24px;border-bottom:1px solid var(--line);padding-bottom:12px}
.atabs a{padding:9px 16px;border-radius:12px;font-weight:600;font-size:14.5px;color:var(--green-deep)}
.atabs a.on{background:var(--green-deep);color:#fff}
.stats{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:14px;margin-bottom:26px}
.stat{background:var(--panel);border-radius:16px;padding:16px 18px}
.stat b{display:block;font-family:var(--serif);font-size:30px;color:var(--green-deep)}
.stat span{font-size:13px;color:var(--muted)}
.tbl{width:100%;border-collapse:collapse;font-size:14px;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.tbl th{background:var(--panel);text-align:left;padding:10px 12px;font-size:12.5px;letter-spacing:.04em;text-transform:uppercase;color:var(--green-mid)}
.tbl td{padding:10px 12px;border-top:1px solid var(--line);vertical-align:middle}
.tblwrap{overflow-x:auto;border-radius:14px}
.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700;background:var(--panel);color:var(--green-deep)}
.pill.pub{background:var(--clay-soft)}
.pill.draft{background:#f3ecd9;color:#7a5b0c}
.pill.pend{background:#fff3d6;color:#7a5b0c}
.pill.paidp{background:var(--clay-soft)}
.pill.canc{background:#eee;color:#777}
.panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;margin-bottom:22px}
.panel h3{font-family:var(--sans);font-size:17px;margin-bottom:14px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.row3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media (max-width:640px){.row2,.row3{grid-template-columns:1fr}}
.lrow{display:grid;grid-template-columns:110px minmax(0,1fr) auto;gap:14px;align-items:start;padding:14px 0;border-top:1px solid var(--line)}
.lrow:first-of-type{border-top:none}
.lrow .th{width:110px;aspect-ratio:16/9;background:var(--panel);border-radius:10px;overflow:hidden;display:grid;place-items:center;font-size:12px;color:var(--muted)}
.lrow .th img{width:100%;height:100%;object-fit:cover}
.lrow .acts{display:flex;flex-direction:column;gap:6px}
.lrow input[type=text],.lrow textarea{margin-bottom:8px;padding:8px 12px;font-size:14px}
.lrow textarea{min-height:60px}
@media (max-width:700px){.lrow{grid-template-columns:1fr}.lrow .acts{flex-direction:row;flex-wrap:wrap}}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.toolbar input[type=search]{max-width:320px}

/* ---------- thanh toán ---------- */
.paybox{max-width:640px;margin:40px auto 70px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:30px;box-shadow:0 30px 60px -40px rgba(30,60,40,.5)}
.qr{aspect-ratio:1;max-width:240px;margin:18px auto;border:2px dashed var(--green-soft);border-radius:18px;display:grid;place-items:center;text-align:center;color:var(--muted);font-size:14px;padding:16px;background:var(--panel)}
.code{display:inline-block;font-family:ui-monospace,Menlo,monospace;font-size:20px;font-weight:700;letter-spacing:.08em;background:var(--panel);padding:8px 16px;border-radius:12px;color:var(--green-deep)}

/* ---------- chân trang (giống các trang con của website) ---------- */
footer{padding:48px 0 30px;border-top:1px solid var(--line);background:var(--panel);margin-top:auto}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark img{width:100%;height:100%;object-fit:contain}
.footer-brand .brand-name{font-size:16.5px;font-weight:700;color:var(--green-deep);letter-spacing:.02em;line-height:1.4}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:12.5px;color:#8a8b78}
.footer-bottom a:hover{color:var(--clay)}
.toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,20px);background:var(--green-deep);color:#fff;padding:12px 22px;border-radius:999px;font-size:14px;opacity:0;pointer-events:none;transition:opacity .25s,transform .25s;z-index:100;max-width:90vw;text-align:center}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.bad{background:var(--danger)}
@media (max-width:600px){.wrap{padding:0 18px}.section{padding:40px 0}}

/* ---------- trang khoá học (Tìm hiểu / Kích hoạt) ---------- */
.cpage{background:linear-gradient(180deg,var(--panel),#fff 420px);padding:22px 0 70px}
.cgrid{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:40px;align-items:start;margin-top:22px}
.cmain h1{font-size:clamp(30px,4.2vw,50px);line-height:1.12;margin-bottom:16px;text-wrap:balance}
.cmeta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;color:var(--muted);font-size:15.5px;margin-bottom:18px}
.cpill{display:inline-flex;align-items:center;gap:7px;background:var(--clay-soft);color:var(--green-deep);font-weight:700;padding:6px 14px;border-radius:999px;font-size:14px}
.cpill::before{content:'';width:7px;height:7px;border-radius:50%;background:var(--clay)}
.cpill.paid{background:#f6ecd0;color:#6b4d09}.cpill.paid::before{background:var(--gold)}
.cdesc{font-size:16.5px;color:#3a4032;margin-bottom:24px;max-width:760px;white-space:pre-line}
.cbox-list{background:#fff;border:1px solid var(--line);border-radius:20px;overflow:hidden;margin-bottom:24px;box-shadow:0 14px 30px -26px rgba(30,60,40,.4)}
.cl-head{display:flex;justify-content:space-between;align-items:center;padding:18px 24px;background:var(--panel);border-bottom:1px solid var(--line)}
.cl-head b{font-size:17px;color:var(--green-deep)}.cl-head span{color:var(--muted);font-size:14px}
.cbox-list ol{list-style:none}
.cbox-list li{border-bottom:1px solid var(--line)}.cbox-list li:last-child{border-bottom:none}
.lrow-in{display:flex;align-items:center;gap:16px;padding:16px 24px;font-size:16px}
a.lrow-in:hover{background:var(--panel)}
.ln{flex:0 0 34px;height:34px;border-radius:10px;background:var(--panel);color:var(--green-deep);font-weight:700;display:grid;place-items:center;font-size:14px}
.lx{flex:1;color:var(--ink)}
.lt{font-size:12.5px;font-weight:700;color:var(--green-deep);background:var(--clay-soft);padding:4px 11px;border-radius:999px;white-space:nowrap}
.lt.lock{background:#eef1ec}.lt.done{background:var(--green-deep);color:#fff}
.teacher{display:flex;align-items:center;gap:18px;background:var(--panel);border-radius:20px;padding:18px 22px}
.teacher img{width:74px;height:74px;border-radius:50%;object-fit:cover;border:3px solid #fff;flex-shrink:0}
.teacher div{flex:1}.teacher b{display:block;font-size:18px;color:var(--green-deep)}.teacher span{font-size:14px;color:var(--muted)}
.cbox{background:#fff;border:1px solid var(--line);border-radius:24px;overflow:hidden;box-shadow:0 30px 60px -40px rgba(30,60,40,.55);position:sticky;top:96px}
.cbox-cover{aspect-ratio:16/9;background:linear-gradient(135deg,#173a27,#3E7A4C);position:relative}
.cbox-cover img{width:100%;height:100%;object-fit:cover}
.cbox-cover .ph{position:absolute;inset:0;display:grid;place-items:center;color:#fff;font-family:var(--serif);font-size:22px;text-align:center;padding:16px}
.cbox-body{padding:22px 26px 26px}
.cbox-price{font-family:var(--sans);font-size:40px;font-weight:700;color:var(--green-deep);line-height:1.1;display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.cbox-price .old{font-size:16px;font-weight:500}
.cbox-note{display:inline-block;background:#fbf1d8;color:#6b4d09;font-weight:600;font-size:14px;padding:6px 14px;border-radius:999px;margin:12px 0 18px}
.btn-big{padding:17px 24px;font-size:17px;border-radius:999px;box-shadow:0 14px 26px -14px rgba(30,92,59,.8)}
.perks{list-style:none;border-top:1px solid var(--line);margin-top:20px;padding-top:16px;display:grid;gap:10px}
.perks li{display:flex;gap:10px;font-size:15px;color:#3a4032}
.perks li::before{content:'✓';color:var(--clay);font-weight:700}
.cbox-contact{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:20px}
.center{text-align:center;margin-top:10px}
@media (max-width:960px){.cgrid{grid-template-columns:1fr}.cbox{position:static;order:-1}}
@media (max-width:520px){.teacher{flex-wrap:wrap}.lrow-in{padding:14px 16px;gap:12px;font-size:15px}.cbox-body{padding:18px}}
.gwrap{margin-top:4px}
.gsep{display:flex;align-items:center;gap:12px;color:#9aa590;font-size:13px;margin:18px 0 14px}
.gsep::before,.gsep::after{content:'';flex:1;height:1px;background:var(--line)}
.gbtn{display:flex;justify-content:center;min-height:44px}

/* ---------- bảng xếp hạng ---------- */
.rk-page{background:linear-gradient(180deg,#1a4d33 0%,#2a6a45 55%,#3E7A4C 100%);padding:26px 0 70px;color:#fff;min-height:70vh}
.rk-page .crumbs,.rk-page .crumbs a{color:rgba(255,255,255,.75)}
.rk-page h1{color:#fff;text-align:center;font-size:clamp(30px,4.4vw,48px);margin-top:10px}
.rk-sub{text-align:center;color:#d9f0da;margin:8px 0 22px;font-size:16.5px}
.rk-tabs{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:26px}
.rk-tabs button{padding:9px 22px;border-radius:999px;border:1.5px solid rgba(255,255,255,.4);background:rgba(255,255,255,.08);color:#fff;font-weight:600;font-size:15px;cursor:pointer}
.rk-tabs button.on{background:#F6DC96;color:#4A3608;border-color:#F6DC96}
.rk-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;align-items:start}
.podium{display:grid;grid-template-columns:1fr 1.15fr 1fr;gap:10px;align-items:end;min-height:300px;margin-bottom:20px}
.pod{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;min-height:270px;justify-content:flex-end}
.pod b{font-size:15px;line-height:1.3}.pod .pv{font-family:var(--serif);font-size:20px;color:#F6DC96;font-weight:700}
.pod .step{width:100%;border-radius:14px 14px 0 0;display:grid;place-items:end center;padding-bottom:10px;font-family:var(--serif);font-style:italic;font-size:36px;font-weight:700;color:#3a3a3a}
.p1 .step{height:110px;background:linear-gradient(#F6DC96,#D9A93F)}
.p2 .step{height:82px;background:linear-gradient(#e6ecf0,#a9b6c0)}
.p3 .step{height:64px;background:linear-gradient(#e8c4a0,#b98a5e)}
.rk-av{display:inline-grid;place-items:center;width:56px;height:56px;border-radius:50%;background:#4FA65C;border:3px solid rgba(255,255,255,.85);font-weight:700;font-size:18px;color:#fff;flex-shrink:0}
.p1 .rk-av{width:76px;height:76px;font-size:24px;border-color:#F6DC96}
.crown{font-size:26px;line-height:1}
.podium-empty{font-size:80px;text-align:center;padding:30px 0;opacity:.6}
.rk-list{background:#fff;color:var(--ink);border-radius:22px;overflow:hidden;box-shadow:0 26px 50px -30px rgba(0,0,0,.6)}
.rk-row{display:flex;align-items:center;gap:14px;padding:12px 18px;border-bottom:1px solid var(--line)}
.rk-row:last-child{border-bottom:none}.rk-row.me{background:var(--clay-soft)}
.rk-row .rk-av{width:44px;height:44px;font-size:15px;border-color:var(--clay-soft)}
.rk-n{flex:0 0 26px;text-align:center;font-family:var(--serif);font-size:20px;color:#8a9683}
.rk-mid{flex:1;min-width:0}.rk-mid b{display:block;font-size:15.5px}
.rk-mid .prog{height:6px;margin-top:6px}
.rk-v{font-weight:700;color:var(--green-deep);white-space:nowrap;font-size:14.5px}
.rk-empty{padding:34px 24px;color:var(--muted);text-align:center;line-height:1.7}
.rk-cta{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;background:rgba(0,0,0,.22);border-radius:20px;padding:18px 22px;border:1px solid rgba(255,255,255,.18)}
.rk-cta b{display:block;font-family:var(--serif);font-size:19px}.rk-cta span{font-size:14px;color:#d9f0da}
.btn-ghost-w{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}.btn-ghost-w:hover{background:#fff;color:var(--green-deep)}
.rk-foot{text-align:center;color:#cfe6d2;font-size:13px;margin-top:22px}
@media (max-width:900px){.rk-grid{grid-template-columns:1fr}.pod{min-height:230px}}

/* ---------- gợi ý / bài tập / câu hỏi trong phòng học ---------- */
.tipbox{background:var(--clay-soft);border-radius:14px;padding:16px 18px;margin:18px 0}
.tipbox b{display:block;color:var(--green-deep);margin-bottom:6px;font-size:14.5px}
.player .panel{margin-top:22px}
.player .panel h3{font-family:var(--sans);font-size:16.5px;color:var(--green-deep);margin-bottom:4px}
.player .panel textarea{margin-bottom:12px}
/* Menu tài khoản (đã đăng nhập) */
header .nav-links .tk{position:relative}
header .nav-links .tk-btn{display:flex;align-items:center;gap:9px;background:#fff;border:1.5px solid var(--green-deep);color:var(--green-deep);border-radius:999px;padding:4px 14px 4px 4px;font:inherit;font-size:14px;font-weight:600;cursor:pointer}
header .nav-links .tk-btn:hover{background:var(--clay-soft)}
.tk-av{width:30px;height:30px;border-radius:50%;background:var(--green-deep);color:#fff;display:grid;place-items:center;font-size:12px;font-weight:700;flex:none}
.tk-name{max-width:130px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tk-btn .caret{transition:transform .2s}
.tk.open .tk-btn .caret{transform:rotate(180deg)}
.tk-menu{display:none;position:absolute;right:0;top:calc(100% + 10px);min-width:240px;background:#fff;border:1px solid rgba(30,92,59,.15);border-radius:16px;box-shadow:0 14px 40px rgba(20,60,40,.18);padding:8px;z-index:60}
.tk.open .tk-menu{display:block}
.tk-head{padding:10px 12px 12px;border-bottom:1px solid rgba(30,92,59,.12);margin-bottom:6px;display:flex;flex-direction:column;gap:2px}
.tk-head b{color:var(--green-deep);font-size:15px}
.tk-head span{font-size:13px;color:#6b7a70}
header .nav-links .tk-item{display:flex;align-items:center;gap:10px;width:100%;box-sizing:border-box;padding:10px 12px;border:0;background:none;border-radius:10px;color:#22332a;font:inherit;font-size:14.5px;font-weight:500;text-align:left;cursor:pointer;text-decoration:none;opacity:1}
header .nav-links .tk-item::after{display:none}
header .nav-links .tk-item:hover{background:var(--clay-soft)}
.tk-ic{width:22px;text-align:center}
.tk-out{color:#a33!important;border-top:1px solid rgba(30,92,59,.12);border-radius:0 0 10px 10px!important;margin-top:4px}
@media (max-width:960px){
  header .nav-links .tk{margin-top:14px}
  header .nav-links .tk-btn{width:100%;justify-content:flex-start}
  .tk-menu{position:static;box-shadow:none;border:0;padding:4px 0 0;min-width:0}
}

header .nav-links .tk-wrap{display:flex;align-items:center;gap:10px}
.tk-cart{position:relative;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:#fff;border:1.5px solid var(--green-deep);color:var(--green-deep)!important;padding:0!important;opacity:1}
header .nav-links a.tk-cart::after{display:none}
.tk-cart:hover{background:var(--clay-soft)}
.tk-badge{position:absolute;top:-6px;right:-6px;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:#f97316;color:#fff;font-size:11px;font-weight:700;display:grid;place-items:center;box-sizing:border-box}
.tk-badge[hidden]{display:none}

header .nav-links a.tk-mine{white-space:nowrap}
.tk-bellbox{position:relative}
.tk-bell{cursor:pointer;font:inherit}
.tk-pop{position:absolute;right:0;top:calc(100% + 10px);min-width:220px;background:#fff;border:1px solid rgba(30,92,59,.15);border-radius:14px;box-shadow:0 14px 40px rgba(20,60,40,.18);padding:14px 16px;font-size:14px;color:#6b7a70;z-index:60}
.tk-pop[hidden]{display:none}
header .nav-links .tk-exit{border:1.5px solid rgba(30,92,59,.25);background:#fff;color:var(--green-deep);border-radius:999px;padding:8px 18px;font:inherit;font-size:14px;font-weight:600;cursor:pointer}
header .nav-links .tk-exit:hover{background:var(--clay-soft)}
@media (max-width:960px){
  header .nav-links .tk-wrap{flex-wrap:wrap;margin-top:14px}
  header .nav-links .tk-wrap .tk{flex:1 1 100%;order:-1;margin-top:0}
  .tk-pop{right:auto;left:0}
}

@media (min-width:961px){header .nav-links.tk-on .nav-pill{display:none}header .nav-links.tk-on{gap:16px}}


@media (min-width:961px){header .nav-links.tk-on{margin-left:28px}}

.pf-grid{display:grid;grid-template-columns:300px 1fr;gap:24px;align-items:start;padding-bottom:40px}
.pf-card{background:linear-gradient(160deg,var(--green-deep),var(--green-mid));color:#fff;border-radius:20px;padding:26px 20px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:6px;margin-bottom:16px}
.pf-card span{opacity:.85;font-size:14px}
.pf-av{width:84px;height:84px;border-radius:50%;background:rgba(255,255,255,.22);border:3px solid rgba(255,255,255,.55);display:grid;place-items:center;font-size:28px;font-weight:700;margin-bottom:8px}
.pf-nav{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}
.pf-nav a{display:flex;align-items:center;gap:12px;padding:14px 18px;color:#22332a;text-decoration:none;font-weight:500;border-bottom:1px solid var(--line)}
.pf-nav a:last-child{border-bottom:0}
.pf-nav a.on{background:var(--clay-soft);color:var(--green-deep);font-weight:700}
.pf-nav a:hover{background:var(--clay-soft)}
.pf-main h1{font-size:26px;margin-bottom:18px}
.pf-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.pf-h{margin:18px 0 12px;padding-top:18px;border-top:1px solid var(--line)}
@media (max-width:860px){.pf-grid{grid-template-columns:1fr}.pf-row{grid-template-columns:1fr}}

img.pf-av{width:84px;height:84px;border-radius:50%;object-fit:cover;border:3px solid rgba(255,255,255,.55);margin-bottom:8px}
.pf-pts{display:block;background:#fff;color:var(--green-deep);border-radius:14px;padding:12px;margin-top:14px;width:100%;box-sizing:border-box;text-decoration:none}
.pf-pts small{display:block;color:var(--muted);font-size:13px}.pf-pts b{font-size:20px}
.pf-care{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px 14px;margin-bottom:16px}
.pf-care>div:nth-child(2){flex:1}.pf-care small{display:block;color:var(--muted);font-size:12.5px}
.pf-care-av{width:44px;height:44px;border-radius:50%;background:var(--green-deep);color:#fff;display:grid;place-items:center;font-weight:700;font-size:14px}
.pf-ic{width:34px;height:34px;border-radius:50%;background:var(--clay-soft);display:grid;place-items:center;font-size:16px}
.pf-strip{display:grid;grid-template-columns:repeat(3,1fr) auto;align-items:center;background:#f2f8f3;border:1px solid var(--line);border-radius:16px;margin-bottom:22px}
.pf-strip>div{padding:12px 16px;border-right:1px solid var(--line)}.pf-strip b{display:block;color:var(--green-deep)}.pf-strip small{color:var(--muted)}
.pf-strip a{padding:0 18px}
.pf-two{display:grid;grid-template-columns:230px 1fr;gap:24px;align-items:start}
.pf-avbox{background:#f2f8f3;border:1px solid var(--line);border-radius:18px;padding:22px 14px;display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center}
.pf-avwrap{position:relative}
.pf-avbig{width:130px;height:130px;border-radius:50%;background:var(--green-deep);color:#fff;display:grid;place-items:center;font-size:42px;font-weight:700}
img.pf-avbig{object-fit:cover;border:4px solid #fff;box-shadow:0 4px 14px rgba(20,60,40,.2)}
.pf-cam{position:absolute;right:0;bottom:6px;width:36px;height:36px;border-radius:50%;border:2px solid #fff;background:#f3c14b;cursor:pointer;font-size:16px}
.pf-box{background:#f2f8f3;border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin-bottom:14px;display:flex;flex-direction:column;gap:6px}
.pf-box small{color:var(--muted)}.pf-phone{font-size:18px;font-weight:600;color:var(--green-deep)}
.pf-big{background:linear-gradient(160deg,var(--green-deep),var(--green-mid));color:#fff;border-radius:18px;padding:22px;margin-bottom:12px}
.pf-big small{display:block;opacity:.85}.pf-big b{font-size:34px}
.pf-list{list-style:none;margin:14px 0 0;padding:0}
.pf-list li{display:flex;align-items:center;gap:12px;padding:14px 4px;border-bottom:1px solid var(--line)}
.pf-list li>div{flex:1}.pf-list small{display:block;color:var(--muted)}
.pf-plus{color:var(--green-deep);font-weight:700}
@media (max-width:860px){.pf-two{grid-template-columns:1fr}.pf-strip{grid-template-columns:1fr 1fr 1fr}.pf-strip a{grid-column:1/-1;padding:10px 16px}}
.tk-av{object-fit:cover}
.tk-poplink{color:var(--green-deep);font-weight:600;font-size:13px}

a.pf-strip{text-decoration:none;color:inherit;cursor:pointer;transition:box-shadow .2s,border-color .2s}
a.pf-strip:hover{border-color:var(--green-mid);box-shadow:0 6px 20px rgba(30,92,59,.12)}
.pf-more{padding:0 18px;color:var(--green-deep);font-weight:700}
.pk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:18px}
.pk-card{border:1.5px dashed #b9d3bf;background:#f6faf6;border-radius:18px;padding:18px;display:flex;flex-direction:column;gap:12px}
.pk-card.on{border-style:solid;border-color:var(--green-soft);background:#fff}
.pk-top{display:flex;justify-content:space-between;align-items:center;gap:8px}.pk-top b{color:var(--green-deep);font-size:16px}
.pk-pill{font-size:12.5px;border:1px solid var(--line);border-radius:999px;padding:4px 10px;color:var(--muted);background:#fff;white-space:nowrap}
.pk-card.on .pk-pill{color:var(--green-deep);background:var(--clay-soft);border-color:var(--green-soft)}
.pk-name{min-height:42px;color:#22332a;font-weight:600}
.pk-exp small{color:var(--muted);letter-spacing:.06em;margin-right:8px}
.pk-care{display:flex;align-items:center;gap:14px;border:1.5px dashed #9cc5a7;border-radius:16px;padding:14px 18px}
.pk-care span{flex:1}
@media (max-width:860px){.pk-grid{grid-template-columns:1fr}.pk-care{flex-wrap:wrap}}

/* cầu nối vô hình giữa nút và menu xổ xuống: rê chuột xuống không bị đóng giữa chừng */
@media (min-width:961px){header .dropdown::before{content:'';position:absolute;left:0;right:0;top:-18px;height:18px}}

header .nav-links a.tk-admin{background:var(--green-deep);color:#fff!important;opacity:1;border-radius:999px;padding:8px 16px;font-size:14px;font-weight:600;white-space:nowrap}
header .nav-links a.tk-admin::after{display:none}
header .nav-links a.tk-admin:hover{background:var(--green-mid)}

.mc-head{background:linear-gradient(135deg,var(--green-deep),var(--green-mid));color:#fff;padding:28px 0}
.mc-headin{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.mc-head h1{color:#fff;font-size:clamp(26px,3.6vw,38px)}
.mc-tabs{display:flex;gap:10px;flex-wrap:wrap}
.mc-tab{padding:10px 20px;border-radius:999px;background:#fff;color:var(--green-deep);font-weight:700;font-size:14px;text-decoration:none;text-transform:uppercase;letter-spacing:.02em}
.mc-tab.on{background:#f3a51c;color:#fff}
.mc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.mc{display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px;box-shadow:0 8px 24px rgba(20,60,40,.06)}
.mc-img{flex:0 0 150px;height:150px;border-radius:14px;overflow:hidden;background:var(--panel);display:block}
.mc-img img{width:100%;height:100%;object-fit:cover;display:block}
.mc-img .ph{padding:12px;font-weight:700;color:var(--green-deep)}
.mc-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:10px}
.mc-body h3{font-size:18px;color:var(--green-deep)}
.mc-meta{display:flex;gap:14px;flex-wrap:wrap;color:var(--muted);font-size:13.5px}
.mc-prog{display:flex;justify-content:space-between;font-size:13.5px;color:var(--muted);margin-bottom:6px}.mc-prog b{color:var(--green-deep)}
@media (max-width:860px){.mc-grid{grid-template-columns:1fr}}
@media (max-width:480px){.mc{flex-direction:column}.mc-img{flex:none;width:100%;height:170px}}

/* giãn đều các mục trên thanh menu */
@media (min-width:1200px){header .nav-links{gap:38px}header .nav-links.tk-on{gap:30px}header .nav-links .tk-wrap{gap:12px}}
@media (min-width:961px) and (max-width:1199px){header .nav-links{gap:26px}header .nav-links.tk-on{gap:20px}}

.hb-top{display:flex;align-items:center;gap:18px;flex-wrap:wrap;background:#fff8ec;border:1px solid #f3e0bd;border-radius:18px;padding:16px 20px;margin-bottom:18px}
.hb-flame{width:54px;height:54px;border-radius:16px;background:#ffedd2;display:grid;place-items:center;font-size:28px}
.hb-big{font-size:38px;color:#d9730d;line-height:1}
.hb-week{margin-left:auto;display:flex;gap:10px;align-items:flex-end;height:96px}
.hb-wd{width:38px;height:100%;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:3px;position:relative}
.hb-wd i{display:block;width:100%;border-radius:6px;background:#e4eae1;min-height:6px}
.hb-wd i.part{background:#f7c57a}.hb-wd i.full{background:#f28a1e}
.hb-wd small{color:var(--muted);font-size:11px}.hb-wd b{font-size:11px;color:var(--green-deep)}
.hb-tabs{display:flex;gap:8px;margin-bottom:18px;flex-wrap:wrap}
.hb-tab{background:var(--panel)!important;color:var(--green-deep)!important;text-transform:none!important;font-size:14px!important}
.hb-tab.on{background:var(--green-deep)!important;color:#fff!important}
.hb-daysw{display:flex;gap:8px;margin-bottom:14px}
.hb-daysw a{padding:8px 16px;border-radius:999px;background:var(--panel);color:var(--green-deep);font-weight:600;font-size:14px;text-decoration:none}
.hb-daysw a.on{background:var(--green-mid);color:#fff}
.hb-list{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.hb-row{display:flex;align-items:center;gap:14px;border:1px solid var(--line);border-left:4px solid #f28a1e;border-radius:14px;padding:12px 14px;background:#fff}
.hb-row.done{background:#f2f8f3;border-left-color:var(--clay)}
.hb-ck{width:34px;height:34px;border-radius:50%;border:2px solid #c9d6c8;background:#fff;color:#fff;font-size:18px;cursor:pointer;flex:none}
.hb-ck.on{background:var(--clay);border-color:var(--clay)}
.hb-name{flex:1;font-weight:600;color:#22332a}.hb-row.done .hb-name{text-decoration:line-through;opacity:.7}
.hb-streak{background:#ffedd2;color:#c2620a;border-radius:999px;padding:4px 10px;font-size:13px;font-weight:700}
.hb-del{border:0;background:none;color:#a33;font-size:22px;cursor:pointer;line-height:1}
.hb-add{display:flex;gap:10px;margin-bottom:6px}.hb-add input{flex:1}
.hb-sug{display:flex;flex-wrap:wrap;gap:8px}
.hb-chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 14px;cursor:pointer;font:inherit;font-size:13.5px;color:var(--green-deep)}
.hb-chip:hover{background:var(--clay-soft)}
.hb-hist{border:1px solid var(--line);border-radius:16px;padding:14px 16px;margin-bottom:14px}
.hb-hh{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.hb-grid{display:grid;grid-template-columns:repeat(14,1fr);gap:5px;margin-bottom:10px}
.hb-grid i{aspect-ratio:1;border-radius:5px;background:#e9efe7}.hb-grid i.on{background:var(--clay)}
.hb-badges{display:flex;gap:8px;flex-wrap:wrap}
.hb-badge{font-size:13px;padding:5px 12px;border-radius:999px;background:#f0f0ee;color:#9aa19a;filter:grayscale(1)}
.hb-badge.on{background:#fff3d6;color:#8a5a00;filter:none;font-weight:700}
.hb-comm{display:flex;flex-direction:column;gap:10px}
.hb-mem{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:14px;padding:12px 14px;background:#fff}
.hb-mem.me{border-color:var(--green-soft);background:#f2f8f3}
.hb-rank{width:26px;text-align:center;font-weight:700;color:var(--muted)}
.hb-mav{width:40px;height:40px;border-radius:50%;background:var(--green-deep);color:#fff;display:grid;place-items:center;font-weight:700;font-size:14px;flex:none}
.hb-mmid{flex:1;min-width:0}.hb-mmid .prog{margin-top:6px;height:6px}
.hb-mright{text-align:right;display:flex;flex-direction:column;gap:2px}.hb-mright small{color:var(--muted)}
@media (max-width:600px){.hb-week{margin-left:0;width:100%;justify-content:space-between}.hb-wd{width:auto;flex:1}}

/* nút Zalo + Gọi nổi góc phải dưới, giống trang chủ */
.float-contact{position:fixed; right:24px; bottom:84px; z-index:72; display:flex; flex-direction:column; gap:10px;}
.fc-btn{
  position:relative; width:46px; height:46px; border-radius:50%; color:#fff;
  display:flex; align-items:center; justify-content:center;
  opacity:.62; box-shadow:0 8px 20px -10px rgba(20,35,20,.5);
  transition:opacity .2s ease, transform .2s ease;
}
.fc-btn:hover, .fc-btn:focus-visible{opacity:1; transform:translateY(-2px);}
.fc-btn span{
  position:absolute; right:56px; top:50%; transform:translateY(-50%);
  background:rgba(30,60,40,.92); color:#fff; font-size:13px; font-weight:600;
  padding:6px 12px; border-radius:8px; white-space:nowrap;
  opacity:0; pointer-events:none; transition:opacity .2s ease;
}
.fc-btn:hover span{opacity:1;}
.fc-zalo{background:#0068FF;}
.fc-call{background:#1E5C3B;}
@media (max-width:600px){
  .float-contact{right:16px; bottom:72px; gap:9px;}
  .fc-btn{width:42px; height:42px; opacity:.7;}
  .fc-btn span{display:none;}
}

/* ===== trang học: thanh gọn + video, Ngày x/N, lộ trình bên phải ===== */
.lm-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 32px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:40}
.lm-brand{display:flex;align-items:center;gap:14px;text-decoration:none;min-width:0}
.lm-dot{width:44px;height:44px;border-radius:50%;background:var(--green-deep);display:grid;place-items:center;flex:none}
.lm-dot i{width:16px;height:16px;border-radius:50%;border:2px solid #fff;box-shadow:inset 0 0 0 3px var(--green-deep),inset 0 0 0 5px #fff;display:block}
.lm-brand small{display:block;color:var(--green-mid);font-weight:700;font-size:12.5px;letter-spacing:.06em;text-transform:uppercase}
.lm-brand b{font-family:var(--serif,'Lora',serif);font-size:20px;color:#22332a;font-weight:600}
.lm-user{display:flex;align-items:center;gap:14px;text-align:right;color:var(--muted);font-size:14px}
.lm-user span{display:flex;flex-direction:column;line-height:1.25}.lm-user b{color:#22332a;font-size:15px}
.lm-exit{border:1px solid var(--line);background:var(--panel);color:var(--muted);border-radius:12px;padding:10px 18px;font:inherit;font-weight:600;cursor:pointer}
.lm-exit:hover{background:var(--clay-soft);color:var(--green-deep)}
.lm-grid{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:32px;padding:28px 32px 64px;align-items:start;max-width:1320px}
.lm-main .video{border-radius:18px}
.lm-kicker{margin-top:22px;color:var(--green-mid);font-weight:700;letter-spacing:.08em;text-transform:uppercase;font-size:14px}
.lm-title{font-family:var(--serif,'Lora',serif);color:var(--green-deep);font-size:clamp(26px,3vw,38px);margin:6px 0 12px;line-height:1.2}
.lm-desc{color:#3a4032;white-space:pre-line;font-size:17px;line-height:1.7;margin-bottom:22px;max-width:820px}
.lm-actions{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:22px}
.lm-done{background:var(--green-deep);color:#fff;border:0;border-radius:14px;padding:16px 28px;font:inherit;font-weight:700;font-size:17px;cursor:pointer}
.lm-done.is-done{background:var(--clay-soft);color:var(--green-deep)}
.lm-navs{display:flex;gap:12px}
.lm-nav{border:1px solid var(--line);background:#fff;border-radius:14px;padding:14px 22px;font-weight:600;color:#22332a;text-decoration:none}
.lm-nav:hover{background:var(--clay-soft)}.lm-nav.off{color:#b5bcb3;background:var(--panel);cursor:default}
.lm-quote{margin:0 0 22px;padding:20px 24px;background:var(--clay-soft);border-left:4px solid var(--clay);border-radius:14px;font-family:var(--serif,'Lora',serif);font-style:italic;font-size:19px;line-height:1.6;color:var(--green-deep);white-space:pre-line}
.lm-main .panel{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:24px 26px}
.lm-side{background:#fff;border:1px solid var(--line);border-radius:22px;position:sticky;top:96px;max-height:calc(100vh - 120px);display:flex;flex-direction:column;overflow:hidden}
.lm-sidehead{padding:22px 26px 18px;background:var(--panel);border-bottom:1px solid var(--line)}
.lm-sidehead h3{font-family:var(--serif,'Lora',serif);color:var(--green-deep);font-size:20px;margin-bottom:14px}
.lm-prog{display:flex;align-items:center;gap:14px}.lm-prog b{color:var(--green-deep);white-space:nowrap}
.lm-track{flex:1;height:10px;background:#dbe5d8;border-radius:999px;overflow:hidden}.lm-track i{display:block;height:100%;background:var(--clay);border-radius:999px}
.lm-list{list-style:none;margin:0;padding:0;overflow:auto;flex:1}
.lm-list li a{display:flex;gap:16px;align-items:center;padding:16px 24px;border-bottom:1px solid var(--line);text-decoration:none;color:#22332a}
.lm-list li a:hover{background:var(--panel)}
.lm-list li.cur a{background:var(--clay-soft)}
.lm-num{flex:0 0 46px;height:46px;border-radius:50%;background:#e4eae1;color:var(--muted);display:grid;place-items:center;font-weight:700}
.lm-list li.done .lm-num{background:var(--green-deep);color:#fff}
.lm-list li.cur .lm-num{background:var(--clay);color:#fff}
.lm-list li b{display:block;font-weight:600;line-height:1.35}.lm-list li small{color:var(--muted);font-size:14px}
.lm-list li.locked a{opacity:.55}
@media (max-width:980px){.lm-grid{grid-template-columns:1fr;padding:18px 16px 48px}.lm-side{position:static;max-height:none}.lm-bar{padding:12px 16px}.lm-user span{display:none}.lm-brand b{font-size:16px}}

/* báo cáo lớp */
.rp-top{display:flex;gap:18px;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;margin-bottom:8px}
.rp-tabs{display:flex;gap:8px}.rp-tabs span,.rp-tabs a{padding:9px 18px;border-radius:999px;background:var(--panel);color:var(--green-deep);font-weight:600;font-size:14px;text-decoration:none}
.rp-tabs span.on{background:var(--green-deep);color:#fff}
.stat.warn{background:#fdeeee;border-color:#f3c9c9}.stat.warn b{color:#b23a3a}
.rp-care{border:1px solid var(--line);border-radius:16px;padding:14px 16px;margin-bottom:12px;background:#fff}
.rp-care-h{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}.rp-care-h small{color:var(--muted)}
.rp-care textarea{margin-bottom:10px}.rp-acts{display:flex;gap:10px;flex-wrap:wrap}
.rp-pill{font-size:12.5px;font-weight:600;padding:3px 10px;border-radius:999px;background:#eef2ec;color:#4a5a49;white-space:nowrap}
.rp-pill.chua_vao{background:#fdeeee;color:#b23a3a}.rp-pill.moi_dung{background:#fff3d6;color:#8a5a00}.rp-pill.vang_7{background:#ffe9d6;color:#a2521a}.rp-pill.deu{background:#e6f4e7;color:#1E5C3B}
.rp-scroll{overflow:auto}.rp-fb{border-top:1px solid var(--line);padding:10px 0}.rp-fb p{margin:4px 0 0;white-space:pre-line}

.fb-box{padding:0!important}
.fb-head{display:flex;justify-content:space-between;align-items:center;width:100%;background:none;border:0;padding:18px 24px;font:inherit;font-weight:700;font-size:16px;color:var(--green-deep);cursor:pointer;text-align:left}
.fb-head:hover{background:var(--clay-soft);border-radius:18px}
.fb-caret{transition:transform .2s}.fb-box.open .fb-caret{transform:rotate(180deg)}
.fb-body{padding:0 24px 22px}

/* trình phát YouTube sạch */
.yt{border-radius:18px;overflow:hidden;background:#0e1a12}
.yt:fullscreen{display:flex;flex-direction:column;border-radius:0}
.yt-stage{position:relative;aspect-ratio:16/9;background:#000;overflow:hidden}
.yt:fullscreen .yt-stage{flex:1;aspect-ratio:auto}
.yt-target,.yt-target iframe{position:absolute;inset:0;width:100%;height:100%;border:0;pointer-events:none}
.yt-poster{position:absolute;inset:0;background:#0e1a12;z-index:1}
.yt-poster img{width:100%;height:100%;object-fit:cover;display:block;opacity:.85}
.yt-bigplay{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:76px;height:76px;border-radius:50%;background:rgba(30,92,59,.92);color:#fff;display:grid;place-items:center;font-size:28px;padding-left:5px;box-shadow:0 10px 30px rgba(0,0,0,.35)}
.yt-shield{position:absolute;inset:0;z-index:2;cursor:pointer;outline:none}
.yt-shield:focus-visible{box-shadow:inset 0 0 0 3px var(--clay)}
.yt-bar{display:flex;align-items:center;gap:12px;padding:10px 14px;background:#12241a;color:#fff}
.yt-btn{background:none;border:0;color:#fff;font-size:17px;cursor:pointer;width:34px;height:34px;border-radius:8px}
.yt-btn:hover{background:rgba(255,255,255,.12)}
.yt-time{font-size:13px;font-variant-numeric:tabular-nums;color:#d9f0da;min-width:38px;text-align:center}
.yt-seek{flex:1;accent-color:#5FB06B;height:6px;cursor:pointer}
.yt-speed{background:#1d3a2a;color:#fff;border:1px solid rgba(255,255,255,.2);border-radius:8px;padding:5px 6px;font-size:13px}

.ans-box h3{font-size:17px;margin-bottom:12px}
.ans-list{display:flex;flex-direction:column}
.ans{display:flex;gap:14px;padding:16px 0;border-top:1px solid var(--line)}.ans:first-child{border-top:0}
.ans-av{flex:0 0 42px;height:42px;border-radius:50%;background:var(--green-deep);color:#fff;display:grid;place-items:center;font-weight:700;font-size:14px}
.ans.mine .ans-av{background:var(--clay)}
.ans-h{display:flex;gap:10px;align-items:baseline;flex-wrap:wrap}.ans-h small{color:var(--muted)}
.ans-main{flex:1;min-width:0}.ans-main p{margin:6px 0 0;white-space:pre-line;line-height:1.65;color:#2b3a2e;word-break:break-word}

.yt-poster img{opacity:.55}
.yt-ptitle{position:absolute;left:0;right:0;top:calc(50% + 58px);text-align:center;color:#fff;font-weight:700;font-size:clamp(16px,2.2vw,24px);padding:0 24px;text-shadow:0 2px 10px rgba(0,0,0,.6)}
.yt-skip{width:auto;padding:0 8px;font-size:13px;font-weight:700}
.yt-vol{width:70px;accent-color:#5FB06B;cursor:pointer}
@media (max-width:640px){.yt-vol{display:none}.yt-bar{gap:6px;padding:8px 8px}.yt-ptitle{display:none}}

/* ===== trình phát: thanh điều khiển nằm TRONG khung hình, tự ẩn khi đang phát ===== */
.yt{position:relative;background:#000}
.yt-bar{position:absolute;left:0;right:0;bottom:0;z-index:3;display:block;padding:34px 16px 10px;background:linear-gradient(180deg,rgba(0,0,0,0),rgba(0,0,0,.78));transition:opacity .25s ease}
.yt.is-playing.idle .yt-bar{opacity:0;pointer-events:none}
.yt.is-playing.idle .yt-shield{cursor:none}
.yt-seekrow{padding:0 2px 4px}.yt-seek{width:100%;display:block;margin:0}
.yt-ctrl{display:flex;align-items:center;gap:6px}
.yt-grow{flex:1}
.yt-times{font-size:13px;color:#fff;font-variant-numeric:tabular-nums;white-space:nowrap;margin-left:6px}
.yt-times .yt-time{min-width:0;color:#fff}
.yt-speed{width:64px;background:rgba(255,255,255,.14);border:0;color:#fff}
.yt-speed option{color:#000}
.yt:fullscreen .yt-stage{height:100%;aspect-ratio:auto}
/* ===== nội dung khoá học: gọn ===== */
.lm-side{border-radius:16px;max-height:calc(100vh - 110px)}
.lm-sidehead{padding:14px 16px 12px}
.lm-sh-top{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:8px}
.lm-sidehead h3{font-size:16px;margin:0}
.lm-count{color:var(--muted);font-size:13px;white-space:nowrap}
.lm-track{height:6px}
.lm-list{padding:6px}
.lm-list li a{padding:9px 10px;gap:10px;border-bottom:0;border-radius:10px;font-size:14px}
.lm-list li+li{margin-top:2px}
.lm-num{flex:0 0 26px;height:26px;font-size:13px}
.lm-tt{flex:1;font-weight:500;line-height:1.35}
.lm-list li.cur .lm-tt{font-weight:700;color:var(--green-deep)}
.lm-now{color:var(--clay);font-size:12px}
.lm-list li b,.lm-list li small{all:unset}
@media (max-width:980px){.lm-side{max-height:none}}

.lm-list li.locked a{opacity:.55}.lm-list li a.wait{cursor:not-allowed}

/* nút ẩn / hiện nội dung khoá học */
.lm-hide{border:0;background:none;color:var(--muted);font:inherit;font-size:13px;cursor:pointer;padding:2px 6px;border-radius:8px}
.lm-hide:hover{background:var(--clay-soft);color:var(--green-deep)}
.lm-show{display:none;margin:0 0 12px auto;border:1px solid var(--line);background:#fff;color:var(--green-deep);font:inherit;font-weight:600;font-size:14px;padding:9px 16px;border-radius:999px;cursor:pointer}
.lm-show:hover{background:var(--clay-soft)}
.lm-grid.side-off{grid-template-columns:minmax(0,1fr)}
.lm-grid.side-off .lm-side{display:none}
.lm-grid.side-off .lm-show{display:flex}

.lm-hint{flex:1;background:#fff8ec;border:1px solid #f3e0bd;color:#8a5a00;border-radius:14px;padding:14px 18px;font-weight:600}

@media (max-width:640px){
  .yt-mute{display:none}
  .yt-bar{padding:26px 8px 6px}
  .yt-ctrl{gap:2px}
  .yt-btn{width:40px;height:40px}
  .yt-skip{width:auto;padding:0 6px}
  .yt-times{font-size:12px;margin-left:2px}
  .yt-speed{width:52px;padding:6px 2px}
}

.lm-title{margin-top:20px}

/* khung gợi ý: cùng font chữ với phần còn lại (không dùng chữ nghiêng có chân) */
.lm-quote{font-family:var(--sans,'Be Vietnam Pro',system-ui,sans-serif);font-style:normal;font-weight:400;font-size:16.5px;line-height:1.7;color:#2b3a2e;overflow-wrap:anywhere}
.lm-quote a,.lm-desc a{color:var(--green-deep);text-decoration:underline;text-underline-offset:2px;overflow-wrap:anywhere}
.lm-desc{overflow-wrap:anywhere}

/* trang học: giữ menu + chân trang của website, có dòng dẫn đường phía trên */
.lm-crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;padding:22px 32px 0;max-width:1320px;font-size:15px;color:var(--muted)}
.lm-crumbs a{color:var(--muted);text-decoration:none}.lm-crumbs a:hover{color:var(--green-deep)}
.lm-crumbs .sep{opacity:.6}.lm-crumbs .cur{color:#22332a;font-weight:500}
.lm-grid{padding-top:20px}
.lm-side{top:96px}
@media (max-width:980px){.lm-crumbs{padding:14px 16px 0;font-size:13.5px}}

.lm-crumbs{font-size:13.5px;gap:6px}
@media (max-width:980px){.lm-crumbs{font-size:12.5px}}

.sub-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.fb-mini{font-size:13.5px;padding:8px 14px}
.fb-mini.on{background:var(--clay-soft)}
.fb-inline{margin-top:14px;padding-top:14px;border-top:1px dashed var(--line)}
.fb-inline textarea{margin-bottom:10px}

.sub-box{padding:16px 20px!important}
.sub-toggle{font-size:14.5px;padding:9px 16px}.sub-toggle.on{background:var(--clay-soft)}
.sub-body{margin-top:16px;padding-top:16px;border-top:1px dashed var(--line)}

/* chọn gói học phí */
.tiers{display:flex;flex-direction:column;gap:10px;margin:14px 0}
.tier{display:block;border:1.5px solid var(--line);border-radius:14px;padding:12px 14px;cursor:pointer;background:#fff;transition:border-color .15s,background .15s}
.tier:hover{border-color:var(--green-soft)}
.tier.on{border-color:var(--green-deep);background:#f4f9f4}
.tier-h{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.tier-dot{width:16px;height:16px;border-radius:50%;border:2px solid #b7c4b3;display:inline-block;flex:none}
.tier.on .tier-dot{border-color:var(--green-deep);background:radial-gradient(circle,var(--green-deep) 45%,#fff 50%)}
.tier-h b{flex:1;color:#22332a}
.tier-price{font-weight:700;color:var(--green-deep)}
.tier-badge{font-size:11.5px;font-weight:700;color:#8a5a00;background:#fff3d6;border-radius:999px;padding:2px 9px}
.tier-perks{margin:10px 0 2px 26px;padding:0;font-size:13.5px;color:#3a4032;display:grid;gap:5px}
.tier-perks li::marker{color:var(--clay)}

.trow{border:1px solid var(--line);border-radius:14px;padding:14px;margin-bottom:12px;display:grid;gap:10px}

.tier-h{display:grid;grid-template-columns:16px 1fr auto;gap:4px 10px;align-items:center}
.tier-badge{grid-column:2 / 4;justify-self:start}

.ord-n{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--panel);color:var(--muted);font-size:12px;font-weight:700;margin-right:10px}
.ord-b{padding:6px 10px;font-size:12px}

.ord-bar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:6px 0 14px}

/* khoá Tổng hợp tài liệu: khung mở tài liệu thay cho video */
.doc-open{display:flex;flex-direction:column;align-items:center;gap:16px;padding:44px 20px;border-radius:14px;background:var(--bg-panel,#f4f8f2);border:1px solid rgba(0,0,0,.08);text-align:center}
.doc-open .doc-ico{font-size:52px;line-height:1}

/* ô mật khẩu có nút Hiện/Ẩn + dòng quên mật khẩu (cả 2 trang) */
.pw-wrap{position:relative}
.pw-wrap input{padding-right:78px !important}
.pw-eye{position:absolute;right:8px;top:50%;transform:translateY(-50%);border:0;background:var(--clay-soft,#E6F1E3);color:var(--green-deep);font:inherit;font-weight:600;font-size:14px;padding:7px 12px;border-radius:999px;cursor:pointer}
.forgot{text-align:center;font-size:14.5px;margin:14px 0 0;color:var(--muted)}

/* ===== thosausongkhoe.com: học viên phần đông lớn tuổi → chữ to hơn, nút to, dễ bấm ===== */
html.site-tssk body{font-size:16.5px}
html.site-tssk .small,html.site-tssk .field .hint{font-size:14.5px}
html.site-tssk .field label{font-size:15.5px}
html.site-tssk .field input,html.site-tssk .field select,html.site-tssk .field textarea{font-size:18px;min-height:52px;padding:12px 16px}
html.site-tssk .btn{min-height:50px;font-size:16.5px}
html.site-tssk .btn-sm{min-height:42px;font-size:15px}
html.site-tssk .check{font-size:15px;color:#3a4a40}
html.site-tssk .check input{width:22px;height:22px;margin-top:1px}
html.site-tssk .lm-list li a{font-size:16px;padding:18px 20px}
html.site-tssk .lm-desc{font-size:17px}
html.site-tssk .authbox h1{font-size:30px}
html.site-tssk .authbox .sub{font-size:16px}
.have-acc{display:block;text-align:center;background:var(--clay-soft,#E6F1E3);color:var(--green-deep);border-radius:14px;padding:12px 14px;margin:0 0 18px;font-size:15.5px;text-decoration:none}
/* hộp "Đưa lớp học ra màn hình điện thoại" (thosausongkhoe.com) */
.inst{border-color:var(--clay);margin-top:22px}
.inst-top{display:flex;gap:14px;align-items:center}
.inst-top img{width:58px;height:58px;border-radius:14px;border:1px solid var(--line);flex-shrink:0}
.inst-top p{margin:4px 0 0}
.inst-btns{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.inst-help ol{margin:14px 0 6px;padding-left:22px;line-height:1.7}
.inst-help li{margin-bottom:6px}

/* thosausongkhoe.com: dải tiêu đề xanh dịu (giống kiểu Kinafit), nền trang xanh nhạt */
html.site-tssk body{background:#F0F6EF}
html.site-tssk .pagehead,html.site-tssk .mc-head{background:linear-gradient(100deg,#2E7A4E 0%,#4E9B66 55%,#86C595 100%);color:#fff;border-bottom:0;padding-top:34px;padding-bottom:34px}
html.site-tssk .pagehead h1,html.site-tssk .mc-head h1{color:#fff;font-family:"Lora",Georgia,serif;text-shadow:0 1px 12px rgba(20,60,35,.18)}
html.site-tssk .pagehead p{color:#F0FAF0}
html.site-tssk .pagehead .eyebrow{color:#F6DC96}
html.site-tssk .pagehead .crumbs,html.site-tssk .pagehead .crumbs a{color:rgba(255,255,255,.9)}

/* ===== Thử thách tập thở + nhắc hằng ngày ===== */
.ch-streak{display:flex;align-items:center;gap:14px;flex-wrap:wrap;background:#fff;border:1px solid rgba(46,122,78,.12);border-radius:20px;padding:16px 20px;margin-bottom:20px;box-shadow:0 10px 28px -22px rgba(30,60,40,.28)}
.ch-flame{font-size:38px;line-height:1}
.ch-streak b{display:block;font-size:20px;color:#173a27}.ch-streak small{color:#5a6a5e;font-size:14.5px}
.ch-week{display:flex;gap:6px;margin-left:auto}
.ch-dot{width:28px;height:28px;border-radius:50%;background:#EEF4EC;color:#fff;font-size:14px;display:inline-flex;align-items:center;justify-content:center;font-weight:700}
.ch-dot.on{background:#4FA65C}.ch-dot.now{box-shadow:0 0 0 2px #F6A623}
.ch-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.ch-card{display:flex;gap:14px;background:#fff;border:1px solid rgba(46,122,78,.10);border-radius:20px;padding:18px;box-shadow:0 10px 28px -22px rgba(30,60,40,.28)}
.ch-ic{font-size:40px;line-height:1;flex-shrink:0}
.ch-body{flex:1;display:flex;flex-direction:column;gap:8px}.ch-body h3{font-size:19px;color:#173a27}.ch-body p{color:#4a5646;font-size:15px}
.ch-meta{color:#5a6a5e}.ch-prog{display:flex;align-items:center;gap:10px}.ch-bar{flex:1;height:8px;border-radius:99px;background:#E4EEE2;overflow:hidden}.ch-bar i{display:block;height:100%;background:#4FA65C;border-radius:99px}
.ch-detail{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:22px;align-items:start}
@media (max-width:900px){.ch-detail{grid-template-columns:1fr}.ch-right{order:-1}}
.ch-days{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 14px}
.ch-day{width:38px;height:38px;border-radius:50%;background:#EEF4EC;color:#6b7c6f;display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:14px}
.ch-day.on{background:#4FA65C;color:#fff}.ch-day.now{box-shadow:0 0 0 2px #F6A623}
.ch-done{background:#E8F6E6;border:1px solid #BFE0BB;color:#1a5a2e;border-radius:16px;padding:14px 18px;margin-bottom:16px;font-size:17px;font-weight:600}
.ch-invite{display:flex;flex-direction:column;gap:2px;margin:12px 0 4px;padding:14px 16px;border-radius:16px;background:#FFF7E0;border:1px solid #F0DDA0;color:#5a4508;text-decoration:none}
.ch-invite b{font-size:16.5px}.ch-invite span{font-size:14.5px}
.ch-mini{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.ch-mini .ch-streak{margin:0;border:0;box-shadow:none;padding:0;flex:1}
/* vòng tròn thở */
.br-card,.rm-card{background:#fff;border:1px solid rgba(46,122,78,.10);border-radius:22px;padding:20px;margin-bottom:18px;box-shadow:0 10px 28px -22px rgba(30,60,40,.28)}
.br-card h3,.rm-card h3{font-size:19px;color:#173a27;margin-bottom:10px}
.br-len{display:flex;gap:8px;margin-bottom:6px}.br-len button{flex:1;min-height:42px;border-radius:999px;border:1.5px solid #A8C9A0;background:#fff;color:#1E5C3B;font:600 15px var(--sans);cursor:pointer}
.br-len button.on{background:#D2EBD6;border-color:#9CCFA8}.br-len.lock{opacity:.5;pointer-events:none}
.br-stage{display:flex;align-items:center;justify-content:center;padding:22px 0 6px;min-height:290px}
.br-circle{width:250px;height:250px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#BFE6C4,#63B573 70%,#3E8F55);transform:scale(.58);display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;box-shadow:0 20px 50px -20px rgba(46,122,78,.7);will-change:transform;text-shadow:0 1px 8px rgba(20,60,35,.35)}
.br-circle[data-kind=hold],.br-circle[data-kind=hold0]{background:radial-gradient(circle at 35% 30%,#F8E7B0,#E9C15D 70%,#C99A2E)}
.br-word{font-size:26px;font-weight:700;font-family:var(--serif,inherit)}.br-count{font-size:44px;font-weight:800;line-height:1.1}
.br-time{text-align:center;font-size:22px;font-weight:700;color:#1E5C3B;font-variant-numeric:tabular-nums;margin-bottom:6px}
.br-tip{text-align:center;color:#4a5646;font-size:15px;margin-bottom:12px}
.br-btns{display:flex;gap:10px}.br-btns .btn{flex:1}.br-btns .br-stop{flex:0 0 auto;min-width:96px}
.br-vib{margin:12px 0 0}
.br-manual{display:block;margin:6px auto 0;background:none;border:0;color:#3E7A4C;text-decoration:underline;font:600 14.5px var(--sans);cursor:pointer;padding:10px}
.rm-row{display:flex;align-items:center;gap:12px;margin:8px 0 12px}.rm-row label{font-weight:600;color:#1E5C3B}.rm-row input{width:auto;min-width:130px;font-size:20px;padding:8px 12px}
.rm-btns{display:flex;flex-wrap:wrap;gap:10px}.rm-btns .btn{flex:1 1 200px}
.rm-off{background:none;border:0;color:#b42318;text-decoration:underline;font:600 14.5px var(--sans);cursor:pointer;padding:10px 0}
.rm-status{color:#1a5a2e;font-weight:600;margin-top:8px}.rm-note{margin-top:10px;font-size:15px;color:#3a4a40;line-height:1.55}.rm-note.bad{color:#b42318}
html.site-tssk .br-word{font-size:28px}html.site-tssk .rm-note{font-size:16px}
@media (prefers-reduced-motion:reduce){.br-circle{transition:none!important}}
[hidden].btn,.br-btns [hidden],.rm-btns [hidden],.rm-off[hidden],.ch-done[hidden]{display:none!important}