:root{--bg:#f4f6fb;--card:#fff;--ink:#16203a;--mute:#66708a;--brand:#2f6df6;--brand-d:#1f4fd8;--brand2:#12a150;--hot:#e5322d;--line:#e4e8f1;--warn:#b45309;--soft:#eef3ff;--shadow:0 6px 22px rgba(30,60,120,.08);--r:16px}
@media (prefers-color-scheme:dark){:root{--bg:#0e1322;--card:#161d33;--ink:#e9edf8;--mute:#9aa5c0;--line:#252e4a;--brand:#6b93ff;--brand-d:#4f7bff;--soft:#1b2544;--shadow:0 6px 22px rgba(0,0,0,.35)}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,"Segoe UI",Roboto,sans-serif}
a{color:var(--brand);text-decoration:none}
img{max-width:100%}
.wrap{max-width:1200px;margin:0 auto;padding:0 16px}
/* thanh thông báo */
.topbar{background:var(--brand);color:#fff;font-size:13.5px;text-align:center;padding:7px 12px}
.topbar a{background:#fff;color:var(--brand-d);border-radius:99px;padding:2px 12px;font-weight:700;margin-left:8px;white-space:nowrap}
/* header */
header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.hrow{display:flex;align-items:center;gap:14px;min-height:64px}
.logo img{height:42px;display:block}
.catbtn{position:relative}
.catbtn>summary{list-style:none;cursor:pointer;background:var(--brand);color:#fff;border-radius:12px;padding:10px 16px;font-weight:700;white-space:nowrap;user-select:none}
.catbtn>summary::-webkit-details-marker{display:none}
.catmenu{position:absolute;top:calc(100% + 8px);left:0;width:min(680px,92vw);background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:10px;display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:2px;max-height:70vh;overflow:auto}
.catmenu a{color:var(--ink);padding:8px 10px;border-radius:8px;font-size:14px;display:flex;justify-content:space-between;gap:8px}
.catmenu a:hover{background:var(--soft);color:var(--brand)}
.catmenu span{color:var(--mute);font-size:12px}
.search{flex:1;display:flex;background:var(--soft);border:1px solid var(--line);border-radius:12px;overflow:hidden;min-width:0}
.search input{border:0;background:transparent;padding:11px 14px;min-width:0}
.search input:focus{outline:none}
.search button{border-radius:0;padding:0 16px}
.acct{display:flex;gap:8px;align-items:center;white-space:nowrap}
.acct form{display:inline;margin:0}
.nav2{border-top:1px solid var(--line)}
.nav2 .wrap{display:flex;gap:6px;justify-content:center;flex-wrap:wrap;padding-top:2px;padding-bottom:2px}
.nav2 a{color:var(--ink);font-weight:600;font-size:14.5px;padding:9px 13px;border-radius:10px}
.nav2 a:hover,.nav2 a.on{color:var(--brand);background:var(--soft)}
/* nút / form */
button,.btn{background:var(--brand);color:#fff;border:0;border-radius:11px;padding:10px 18px;font:inherit;font-weight:700;cursor:pointer;display:inline-block;transition:.15s}
button:hover,.btn:hover{background:var(--brand-d);color:#fff}
button.ghost,.btn.ghost{background:transparent;color:var(--brand);border:1px solid var(--line)}
button.ghost:hover,.btn.ghost:hover{background:var(--soft);color:var(--brand)}
button.ok,.btn.ok{background:var(--brand2)}
.btn.big,button.big{padding:13px 26px;font-size:17px}
input,select,textarea{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:11px;background:var(--card);color:var(--ink);font:inherit}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand);outline-offset:-1px}
label{display:block;margin:12px 0 4px;font-weight:600}
/* hero */
.hero{margin:18px 0 8px;position:relative}
.slides{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:14px;scrollbar-width:none;border-radius:var(--r)}
.slides::-webkit-scrollbar{display:none}
.slides a{flex:0 0 100%;scroll-snap-align:center;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow);display:block}
.slides img{width:100%;display:block;aspect-ratio:2.5/1;object-fit:cover}
.arrow{position:absolute;top:50%;transform:translateY(-50%);width:40px;height:40px;border-radius:50%;padding:0;background:#fff;color:var(--brand);box-shadow:var(--shadow);font-size:20px}
.arrow:hover{background:#fff;color:var(--brand-d)}
.arrow.l{left:10px}.arrow.r{right:10px}
/* usp */
.usp{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin:18px 0}
.usp div{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 16px;display:flex;gap:12px;align-items:center}
.usp i{font-style:normal;font-size:26px}
.usp b{display:block;font-size:14.5px}.usp span{color:var(--mute);font-size:13px}
/* tiêu đề mục */
.sec{margin:34px 0 14px;display:flex;align-items:end;justify-content:space-between;gap:10px}
.sec h2{margin:0;font-size:24px}.sec h2 em{color:var(--brand);font-style:normal}
.sec p{margin:2px 0 0;color:var(--mute);font-size:14px}
.more{width:42px;height:42px;border-radius:50%;border:2px solid var(--brand);display:grid;place-items:center;font-weight:800;flex:none}
.more:hover{background:var(--brand);color:#fff}
/* thẻ khóa học */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px;margin:16px 0}
.pc{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;color:inherit;transition:.18s}
.pc:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand)}
.pc .im{position:relative;aspect-ratio:16/10;background:var(--soft)}
.pc .im img{width:100%;height:100%;object-fit:cover;display:block}
.badge{position:absolute;top:10px;left:10px;background:var(--hot);color:#fff;font-size:12px;font-weight:800;padding:3px 9px;border-radius:99px}
.badge.b2{left:auto;right:10px;background:var(--brand)}
.pc .bd{padding:13px 15px 15px;display:flex;flex-direction:column;gap:6px;flex:1}
.pc .ct{font-size:11.5px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:.3px}
.pc h3{margin:0;font-size:15.5px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:43px}
.pc .pr{margin-top:auto;display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.pc .pr b{font-size:19px;color:var(--hot)}
.pc .pr s{color:var(--mute);font-size:13.5px}
.pc .go{background:var(--soft);color:var(--brand);text-align:center;border-radius:10px;padding:8px;font-weight:700;font-size:14px;margin-top:6px}
.pc:hover .go{background:var(--brand);color:#fff}
/* danh mục */
.cats{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px}
.cats a{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;color:var(--ink);font-weight:600;font-size:14.5px;display:flex;justify-content:space-between;gap:8px;align-items:center}
.cats a:hover{border-color:var(--brand);color:var(--brand)}
.cats span{background:var(--soft);color:var(--brand);border-radius:99px;font-size:12px;padding:1px 9px;font-weight:700}
/* gói hội viên */
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin:16px 0}
.plan{background:var(--card);border:2px solid var(--line);border-radius:var(--r);padding:22px;position:relative;display:flex;flex-direction:column}
.plan.hl{border-color:var(--brand);box-shadow:var(--shadow)}
.plan .tg{position:absolute;top:-12px;right:16px;background:var(--brand);color:#fff;font-size:12px;font-weight:800;padding:3px 12px;border-radius:99px}
.plan h3{margin:0 0 6px;font-size:19px}
.plan .pp{font-size:30px;font-weight:800;color:var(--brand);margin:8px 0 2px}
.plan .pp small{font-size:14px;color:var(--mute);font-weight:500}
.plan ul{list-style:none;padding:0;margin:12px 0;flex:1}
.plan li{padding:4px 0 4px 24px;position:relative;font-size:14.5px}
.plan li:before{content:"✓";position:absolute;left:0;color:var(--brand2);font-weight:800}
/* lọc / phân trang */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0}
.filters input{max-width:340px}.filters select{max-width:260px}
.pager{display:flex;gap:6px;justify-content:center;flex-wrap:wrap;margin:24px 0}
.pager a,.pager b{min-width:38px;text-align:center;padding:8px 12px;border-radius:10px;border:1px solid var(--line);background:var(--card);color:var(--ink);font-weight:600}
.pager b{background:var(--brand);border-color:var(--brand);color:#fff}
/* chi tiết khóa học */
.crumb{font-size:13.5px;color:var(--mute);margin:16px 0 10px}
.cd{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:24px;align-items:start}
@media(max-width:900px){.cd{grid-template-columns:1fr}.acct .hide-m{display:none}}
.box{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;margin-bottom:18px}
.box h2{margin:0 0 12px;font-size:19px}
.cd h1{margin:6px 0 10px;font-size:28px;line-height:1.3}
.cd .cover{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--r);display:block}
.buy{position:sticky;top:130px}
.buy .big-price{font-size:32px;font-weight:800;color:var(--hot)}
.buy .big-price s{font-size:16px;color:var(--mute);font-weight:500;margin-left:6px}
.learn{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:8px 18px}
@media(max-width:700px){.learn{grid-template-columns:1fr}}
.learn li{padding-left:24px;position:relative;font-size:14.5px}
.learn li:before{content:"✓";position:absolute;left:0;color:var(--brand2);font-weight:800}
details.sc{border:1px solid var(--line);border-radius:12px;margin:8px 0;background:var(--card)}
details.sc>summary{cursor:pointer;padding:11px 14px;font-weight:700;display:flex;justify-content:space-between;gap:10px}
details.sc ol{margin:0;padding:4px 16px 12px 36px;font-size:14.5px;color:var(--mute)}
.desc{white-space:pre-line;font-size:15.5px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px}
.card h3{margin:0 0 6px;font-size:16px}
.price{font-weight:800;color:var(--hot);font-size:18px}
.mute{color:var(--mute);font-size:14px}
.flash{background:#fff7e6;color:var(--warn);border:1px solid #f1d29b;border-radius:12px;padding:10px 14px;margin:14px 0}
table{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
th,td{padding:9px 12px;border-bottom:1px solid var(--line);text-align:left;font-size:14px;vertical-align:top}
.tag{display:inline-block;padding:2px 9px;border-radius:99px;font-size:12px;font-weight:700;background:var(--line)}
.tag.granted,.tag.paid{background:#dcfce7;color:#166534}.tag.queued,.tag.pending{background:#fef3c7;color:#92400e}.tag.failed,.tag.cancelled,.tag.revoked{background:#fee2e2;color:#991b1b}
.narrow{max-width:440px;margin:28px auto}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:16px 0}
.stats b{display:block;font-size:24px}
/* footer */
.foot{background:var(--card);border-top:1px solid var(--line);margin-top:50px;padding:34px 0 20px}
.fgrid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:26px}
@media(max-width:800px){.fgrid{grid-template-columns:1fr}}
.foot h4{margin:0 0 10px}.foot a{color:var(--mute);display:block;padding:3px 0;font-size:14.5px}.foot a:hover{color:var(--brand)}
.foot p{color:var(--mute);font-size:14.5px;margin:6px 0}
.copy{text-align:center;color:var(--mute);font-size:13px;margin-top:22px;border-top:1px solid var(--line);padding-top:16px}
/* nút nổi */
.float{position:fixed;left:14px;bottom:18px;display:flex;flex-direction:column;gap:10px;z-index:30}
.float a{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:800;box-shadow:var(--shadow);font-size:13px}
.float .zl{background:#0068ff}.float .tel{background:var(--brand2)}
@media(max-width:700px){.hrow{flex-wrap:wrap;padding:8px 0}.search{order:5;flex:1 0 100%}.logo img{height:36px}.slides img{aspect-ratio:2/1}.sec h2{font-size:20px}}

/* chủ đề dạng thẻ ảnh cuộn ngang */
.tiles{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x proximity;padding:4px 2px 14px;scrollbar-width:thin}
.tile{flex:0 0 200px;scroll-snap-align:start;background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;color:var(--ink);transition:.18s}
.tile:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--brand)}
.tile .ti{position:relative;height:120px;display:grid;place-items:center}
.tile .ti:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 15%,rgba(255,255,255,.35),transparent 55%)}
.tile .em{font-size:52px;filter:drop-shadow(0 4px 8px rgba(0,0,0,.25));position:relative}
.tile .cnt{position:absolute;left:10px;bottom:9px;background:#fff;color:var(--brand-d);font-size:12px;font-weight:800;padding:2px 10px;border-radius:99px}
.tile .tb{padding:11px 13px 13px}
.tile .tb b{display:block;font-size:15px;line-height:1.3;min-height:39px}
.tile .tb small{color:var(--mute);font-size:12.5px}

/* hero dạng thẻ bo góc, thấy một phần thẻ kế tiếp */
.hero2{position:relative;margin:18px 0 8px}
.hs{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding:2px}
.hs::-webkit-scrollbar{display:none}
.hc{flex:0 0 74%;scroll-snap-align:start;border-radius:22px;border:1px solid var(--line);display:grid;grid-template-columns:1.15fr 1fr;gap:10px;padding:34px 30px;min-height:330px;position:relative;overflow:hidden;box-shadow:var(--shadow)}
.hc.c1{background:linear-gradient(120deg,#eef4ff,#dfe9ff 60%,#c9dcff)}
.hc.c2{background:linear-gradient(120deg,#fff3ec,#ffe3d1 60%,#ffd0b3)}
.hc.c3{background:linear-gradient(120deg,#ecfbf3,#d5f5e5 60%,#b9ecd2)}
.hc.c4{background:linear-gradient(120deg,#f5eeff,#e7d9ff 60%,#d6c0ff)}
@media(prefers-color-scheme:dark){.hc{background:linear-gradient(120deg,#1a2547,#22315f)!important;color:#fff}.hc h2{color:#fff}.hc p{color:#c9d3ee}}
.hc .tx{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;z-index:1}
.chip{background:#fff;color:#7a2d00;border-radius:99px;padding:4px 13px;font-size:12.5px;font-weight:800;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.hc h2{margin:14px 0 10px;font-size:34px;line-height:1.2;color:#101a33}
.hc h2 em{color:var(--brand);font-style:normal}
.hc h2 span{color:var(--hot)}
.hc.c3 h2 span{color:#0f9d58}.hc.c4 h2 span{color:#7b3fe4}
.hc p{margin:0 0 18px;color:#44506b;font-size:15px;max-width:440px}
.cta{background:var(--brand);color:#fff;border-radius:12px;padding:11px 22px;font-weight:800}
.cta:hover{background:var(--brand-d);color:#fff}
.hc .il{position:relative}
.hc .il i{position:absolute;font-style:normal;display:grid;place-items:center;background:#fff;border-radius:22px;box-shadow:0 10px 26px rgba(30,60,120,.16);font-weight:800;color:var(--brand-d)}
.il .b1{width:150px;height:150px;font-size:76px;right:70px;top:30px;transform:rotate(-4deg)}
.il .b2{min-width:96px;height:60px;padding:0 14px;font-size:24px;left:0;top:20px;color:#fff;background:linear-gradient(135deg,var(--brand),#5b8dff);border-radius:16px}
.il .b3{width:84px;height:84px;font-size:38px;right:8px;bottom:22px;border-radius:50%}
.dots{display:flex;gap:7px;justify-content:center;margin-top:12px}
.dot{width:9px;height:9px;padding:0;border-radius:99px;background:var(--line)}
.dot.on{width:26px;background:var(--brand)}
.dot:hover{background:var(--brand-d)}
.hero2 .arrow{top:calc(50% - 14px)}
@media(max-width:800px){.hc{flex-basis:92%;grid-template-columns:1fr;padding:24px 20px;min-height:0}.hc .il{display:none}.hc h2{font-size:26px}}


.hero2 .arrow{z-index:5}

/* các mục giới thiệu cuối trang chủ */
.why{margin:46px 0}
.ct2{text-align:center;font-size:26px;margin:0 0 6px}.ct2 em{color:var(--brand);font-style:normal;border-bottom:3px solid var(--soft)}
.ct2:after{content:"";display:block;width:70px;height:4px;border-radius:9px;background:var(--brand);margin:12px auto 24px;opacity:.7}
.wg{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.wg>div{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px 18px;text-align:center;transition:.18s}
.wg>div:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--brand)}
.wg i{font-style:normal;font-size:26px;width:54px;height:54px;border-radius:16px;background:var(--soft);display:grid;place-items:center;margin:0 auto 10px}
.wg h3{margin:0 0 6px;font-size:17px}.wg p{margin:0;color:var(--mute);font-size:14.5px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:s}
.steps>div{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px 16px;text-align:center;position:relative}
.steps b{display:grid;place-items:center;width:42px;height:42px;border-radius:50%;background:var(--brand);color:#fff;margin:0 auto 10px;font-size:18px}
.steps h3{margin:0 0 4px;font-size:16px}.steps p{margin:0;color:var(--mute);font-size:14px}
.pledge{display:grid;grid-template-columns:1fr 1.3fr;gap:30px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:34px;margin:46px 0}
.pledge .pl{display:grid;place-items:center}
.blob{width:280px;height:280px;border-radius:46% 54% 50% 50%/55% 45% 55% 45%;background:linear-gradient(135deg,#dfe9ff,#b9d0ff);display:grid;place-items:center;align-content:center;gap:6px;box-shadow:inset 0 0 0 10px rgba(255,255,255,.5)}
.blob i{font-style:normal;font-size:96px;filter:drop-shadow(0 10px 14px rgba(30,60,120,.25))}
.blob span{font-weight:800;color:var(--brand-d);font-size:20px}
.kick{color:var(--brand);font-weight:800;font-size:13px;letter-spacing:.4px}
.pr2 h2{margin:8px 0 10px;font-size:27px;line-height:1.3}
.pr2 p{color:var(--mute);margin:0 0 12px}
.pr2 ul{list-style:none;padding:0;margin:0 0 18px}
.pr2 li{padding:8px 0 8px 30px;position:relative}
.pr2 li:before{content:"✓";position:absolute;left:0;top:8px;color:#fff;background:var(--brand);width:20px;height:20px;border-radius:50%;font-size:12px;display:grid;place-items:center}
.pr2 li b{display:block}.pr2 li span{color:var(--mute);font-size:14px}
@media(max-width:800px){.wg{grid-template-columns:1fr}.steps{grid-template-columns:1fr 1fr}.pledge{grid-template-columns:1fr;padding:22px}.blob{width:200px;height:200px}.blob i{font-size:64px}}

.hc .il{display:grid;place-items:center}.hc .il img{width:100%;max-width:380px;border-radius:22px;box-shadow:0 12px 30px rgba(30,60,120,.18)}
.tile .ti{height:auto;display:block;aspect-ratio:5/3}.tile .ti img{width:100%;height:100%;object-fit:cover;display:block}.tile .ti:before{display:none}

/* trang Shop khóa học */
.pagehead{background:var(--soft);border-bottom:1px solid var(--line);padding:18px 0;font-size:15px}
.pagehead i{color:var(--mute);font-style:normal;margin:0 6px}.pagehead a{color:var(--ink)}
.shoph{font-size:38px;margin:26px 0 8px}
.shopgrid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:26px;align-items:start}
.resrow{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:14px 0 6px}
.resrow select{width:auto;min-width:190px}
.grid.g3{grid-template-columns:repeat(3,1fr)}
@media(max-width:1000px){.grid.g3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){.shopgrid{grid-template-columns:1fr}.filter{order:-1}}
@media(max-width:560px){.grid.g3{grid-template-columns:1fr}.shoph{font-size:28px}}
.filter{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:0 0 16px;position:sticky;top:130px;box-shadow:var(--shadow)}
.filter .fh{display:flex;justify-content:space-between;align-items:center;padding:16px 18px;background:var(--soft);border-radius:18px 18px 0 0}
.filter .fh a{color:var(--mute);font-size:13.5px}
.filter .fs{padding:14px 18px 4px;border-bottom:1px solid var(--line)}
.filter .fs:last-of-type{border:0}
.filter h4{margin:0 0 8px;font-size:16px}.filter h4 small{color:var(--mute);font-weight:500}
.ck{display:flex;align-items:center;gap:10px;margin:0;padding:7px 0;font-weight:500;cursor:pointer;font-size:14.5px}
.ck input{width:18px;height:18px;flex:none;accent-color:var(--brand)}
.ck span{flex:1}.ck em{font-style:normal;background:var(--soft);color:var(--brand);border-radius:99px;font-size:12px;padding:1px 9px;font-weight:700}
.catq{margin:0 0 6px;padding:9px 12px}
.catlist{max-height:300px;overflow:auto}
.filter .ok{margin:10px 18px 0;width:calc(100% - 36px)!important}

.plan li.no{color:var(--mute)}.plan li.no:before{content:"✕";color:var(--hot)}

/* gói hội viên kiểu web cũ: dải tiêu đề màu, dấu tích tròn, chữ nhấn đỏ */
.plan{padding:0;overflow:visible}
.plan .ph{background:linear-gradient(135deg,#1f4fd8,#2f6df6);color:#fff;text-align:center;padding:16px 12px;border-radius:14px 14px 0 0}
.plan .ph h3{margin:0;font-size:18px;letter-spacing:.6px;color:#fff}
.plan .pb{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.plan .pp{text-align:center;color:var(--hot);font-size:28px;margin:0 0 10px}
.plan .pp small{color:var(--hot);font-size:15px;font-weight:700}
.plan ul.tick{list-style:none;padding:0;margin:0 0 14px;flex:1}
.plan ul.tick li{padding:9px 0 9px 32px;border-bottom:1px solid var(--line);position:relative;font-size:14.5px}
.plan ul.tick li:last-child{border-bottom:0}
.plan ul.tick li:before{content:"✓";position:absolute;left:0;top:9px;width:22px;height:22px;border-radius:50%;background:#22c55e;color:#fff;font-size:13px;font-weight:800;display:grid;place-items:center}
.plan ul.tick li.no:before{content:"✕";background:#ef4444}
.plan ul.tick li.no{color:var(--mute)}
b.hl{color:var(--hot)}
.faq{max-width:900px;margin:0 auto}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;margin:10px 0}
.faq summary{cursor:pointer;padding:14px 18px;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:10px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"▾";color:var(--brand);transition:.15s}
.faq details[open] summary:after{transform:rotate(180deg)}
.faq .fa{padding:0 18px 14px;color:var(--ink);font-size:15px}
.faq .fa p{margin:0 0 10px}
.faq ul.tick{list-style:none;padding:0;margin:0 0 10px}
.faq ul.tick li{padding:4px 0 4px 28px;position:relative}
.faq ul.tick li:before{content:"✓";position:absolute;left:0;top:5px;width:20px;height:20px;border-radius:50%;background:#22c55e;color:#fff;font-size:12px;font-weight:800;display:grid;place-items:center}

/* footer kiểu web cũ */
.foot{padding:40px 0 0;margin-top:50px}
.fcols{display:grid;grid-template-columns:1.3fr repeat(4,1fr);gap:28px;text-align:center;align-items:start}
.fbrand img{height:64px;margin-bottom:12px}
.fbrand p{margin:6px 0;color:var(--ink);font-size:14.5px}
.fbrand a{color:var(--ink)}
.foot h4{font-size:18px;margin:0 0 12px}
.foot .fcols a{color:var(--ink);padding:6px 0;font-size:14.5px}
.foot .fcols a:hover,.fbrand a:hover{color:var(--brand)}
.fbar{background:var(--soft);margin-top:34px;padding:16px 0;font-size:14.5px}
.fbar .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
@media(max-width:900px){.fcols{grid-template-columns:1fr 1fr}.fbrand{grid-column:1/-1}}
@media(max-width:520px){.fcols{grid-template-columns:1fr}}

/* logo to hơn */
.logo img{height:68px}
.hrow{min-height:84px}
@media(max-width:700px){.logo img{height:48px}.hrow{min-height:0}}

/* tiêu đề mục dạng thẻ có viền, nút tròn bên phải (như web mẫu) */
.sec{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:14px 22px;box-shadow:var(--shadow);width:fit-content;max-width:100%;min-width:min(440px,100%);align-items:center}
.sec .more{margin-left:18px}
.sec h2{font-size:26px}

/* tiêu đề mục: thanh xanh đậm full-width, chữ trắng in hoa, "Xem Thêm ›" bên phải (như web cũ) */
.sec{background:linear-gradient(90deg,#1f4fd8,#22336f 70%,#2b2f3a);border:0;border-radius:14px;padding:16px 24px;box-shadow:none;width:auto;min-width:0;max-width:none;color:#fff}
.sec h2{font-size:26px;text-transform:uppercase;color:#fff}
.sec h2 em{color:#fff}
.sec p{color:rgba(255,255,255,.8);text-transform:none}
.sec .more{width:auto;height:auto;border:0;background:transparent!important;color:#fff;font-weight:800;font-size:16px;padding:0;margin-left:16px;display:inline-flex;gap:6px;white-space:nowrap}
.sec .more::before{content:"Xem Thêm"}
.sec .more:hover{background:transparent;color:#ffd166}
@media(max-width:600px){.sec h2{font-size:19px}.sec{padding:12px 16px}}

.gbtn{display:flex;align-items:center;justify-content:center;gap:10px;border:1px solid var(--line);border-radius:11px;padding:11px;font-weight:700;color:var(--ink);background:var(--card)}
.gbtn:hover{border-color:var(--brand);color:var(--brand)}

/* yêu thích + giỏ hàng */
.hicon{color:var(--ink);font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:4px;padding:6px 8px;border-radius:10px}
.hicon:hover{background:var(--soft);color:var(--brand)}
.bdg{background:var(--hot);color:#fff;font-size:11px;border-radius:99px;min-width:19px;height:19px;display:inline-grid;place-items:center;padding:0 5px}
@media(max-width:900px){.hicon .hl2{display:none}}
.pc .im .acts{position:absolute;right:8px;bottom:8px;display:flex;gap:6px}
.ico{width:34px;height:34px;border-radius:50%;background:#fff;color:#9aa5c0;display:grid;place-items:center;font-size:16px;cursor:pointer;box-shadow:0 2px 8px rgba(0,0,0,.18);user-select:none}
.ico:hover{color:var(--hot);transform:scale(1.08)}
.ico.fav.on{color:var(--hot)}
.ico.addcart{filter:grayscale(1);opacity:.75}.ico.addcart.on{filter:none;opacity:1;background:#dcfce7}
button.fav.on{color:var(--hot);border-color:var(--hot)}
button.addcart.on{background:#dcfce7;color:#166534;border-color:#86efac}
.cartgrid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:22px;align-items:start}
@media(max-width:900px){.cartgrid{grid-template-columns:1fr}}
.cline{display:flex;gap:14px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px;margin-bottom:12px}
.cline img{width:120px;aspect-ratio:16/10;object-fit:cover;border-radius:10px}
.cline .ci{flex:1;min-width:0}.cline .cp{text-align:right;color:var(--hot);white-space:nowrap}
.cline.off{opacity:.65}.cline .warn{color:var(--warn);font-size:13px;margin-top:4px}
/* banner quảng cáo gói hội viên */
.promo{display:block;margin:18px 0;border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow)}
.promo img{width:100%;display:block}

/* header gọn: ô tìm kiếm luôn đủ rộng */
.hrow{flex-wrap:wrap;row-gap:8px;padding:6px 0}
.search{flex:1 1 260px;min-width:220px}
.acct{gap:4px}
@media(max-width:1100px){.hicon .hl2{display:none}}

/* HEADER (kiểu web mẫu): logo | Danh mục | ô tìm kiếm rộng | Yêu thích | Giỏ hàng | Đăng nhập */
header .wrap{max-width:1440px}
.hrow{flex-wrap:nowrap;gap:16px;min-height:88px;padding:0 16px}
.hrow .logo{flex:none}
.hrow .catbtn{flex:none}
.search{flex:1 1 auto;min-width:0;display:flex;align-items:center;gap:10px;background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:0 16px;height:48px;color:var(--mute)}
.search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,109,246,.15)}
.search input{flex:1;min-width:0;width:auto;border:0;background:transparent;padding:0;height:100%;font-size:15.5px;outline:none!important}
.search input:focus{outline:none}
.acct{flex:none;display:flex;align-items:center;gap:6px}
.hicon,.umenu>summary{display:inline-flex;align-items:center;gap:7px;color:var(--ink);font-weight:600;font-size:15.5px;padding:8px 12px;border-radius:12px;cursor:pointer;white-space:nowrap;list-style:none}
.umenu>summary::-webkit-details-marker{display:none}
.hicon:hover,.umenu>summary:hover{background:var(--soft);color:var(--brand)}
.bdg{background:var(--hot);color:#fff;font-size:11px;border-radius:99px;min-width:19px;height:19px;display:inline-grid;place-items:center;padding:0 5px;margin-left:-2px}
.umenu{position:relative}
.ubox{position:absolute;right:0;top:calc(100% + 8px);min-width:210px;background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:8px;z-index:30}
.ubox a{display:block;color:var(--ink);padding:9px 12px;border-radius:9px}
.ubox a:hover{background:var(--soft);color:var(--brand)}
.ubox form{margin:6px 0 0}
@media(max-width:1000px){.hicon .hl2,.umenu .hl2{display:none}.hrow{gap:10px}}
@media(max-width:700px){.hrow{flex-wrap:wrap;min-height:0;padding:8px 16px}.search{order:5;flex:1 0 100%}.logo img{height:46px}}

/* thẻ banner dạng ảnh trong hero */
.hc.imgcard{display:block;padding:0;min-height:0;background:none;border:0;flex-basis:74%}
.hc.imgcard img{width:100%;height:100%;display:block;object-fit:cover;border-radius:22px}
@media(max-width:800px){.hc.imgcard{flex-basis:94%}}

/* cộng đồng nói gì */
.rv{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}
.rvc{margin:0;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px 24px;position:relative;display:flex;flex-direction:column;gap:14px;box-shadow:var(--shadow)}
.rtag{align-self:flex-start;background:var(--soft);color:var(--brand);font-size:12.5px;font-weight:800;letter-spacing:.3px;padding:5px 12px;border-radius:8px}
.rq{position:absolute;right:22px;top:6px;font-size:64px;color:var(--soft);font-family:Georgia,serif;line-height:1}
.rvc blockquote{margin:0;color:var(--ink);font-size:15.5px;line-height:1.7;flex:1}
.rvc figcaption{display:flex;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:14px}
.rav{width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,#2f6df6,#7c3aed);color:#fff;display:grid;place-items:center;font-weight:800;flex:none}
.rvc figcaption b{display:block}.rvc figcaption small{color:var(--mute)}
.rst{margin-left:auto;color:#f5a623;letter-spacing:2px;font-size:18px}

/* cảm nhận dạng slide */
.rvs{position:relative}
.rv{display:flex;grid-template-columns:none;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;padding:4px 2px 12px}
.rv::-webkit-scrollbar{display:none}
.rvc{flex:0 0 calc((100% - 40px) / 3);scroll-snap-align:start}
.rv:has(.rvc:only-child) .rvc{flex-basis:100%}
@media(max-width:1000px){.rvc{flex-basis:calc((100% - 20px) / 2)}}
@media(max-width:640px){.rvc{flex-basis:100%}}
.rvs .arrow{top:calc(50% - 6px)}
.rvs .arrow.l{left:-14px}.rvs .arrow.r{right:-14px}

.hs{scroll-snap-type:x mandatory}

/* trang Khóa học của tôi */
.myhead{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px 26px;margin:6px 0 18px;box-shadow:var(--shadow)}
.mh-user{display:flex;align-items:center;gap:16px}.mh-user h1{margin:0;font-size:24px}
.rav.big{width:64px;height:64px;font-size:22px}
.mh-stats{display:flex;gap:14px;flex-wrap:wrap}
.mh-stats div{background:var(--soft);border-radius:14px;padding:12px 20px;text-align:center;min-width:110px}
.mh-stats b{display:block;font-size:26px;color:var(--brand)}.mh-stats span{font-size:13px;color:var(--mute)}
.mymember{display:flex;align-items:center;gap:16px;background:linear-gradient(90deg,#e6f9ee,#d5f5e5);border:1px solid #b9ecd2;border-radius:16px;padding:16px 22px;margin:0 0 8px;color:#14532d;flex-wrap:wrap}
.mymember .btn{margin-left:auto}.mymember .mm-ic{font-size:34px}
.mymember.off{background:linear-gradient(90deg,#eef4ff,#dfe9ff);border-color:#c5d8ff;color:var(--ink)}
.myempty{text-align:center;background:var(--card);border:2px dashed var(--line);border-radius:18px;padding:40px 20px;margin:10px 0 20px}
.myempty .em{font-size:52px}.myempty h3{margin:8px 0 4px;font-size:22px}
.pc.mine .bd .btn{display:block}
@media(prefers-color-scheme:dark){.mymember{color:#d5f5e5;background:#16382b;border-color:#1f5a41}}

.mygrid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:24px;align-items:start}
@media(max-width:1000px){.mygrid{grid-template-columns:1fr}}
.myside .box{margin-bottom:16px}
.myside h3{margin:0 0 12px;font-size:17px}
.sim{display:flex;gap:12px;color:var(--ink);padding:9px 0;border-bottom:1px solid var(--line)}
.sim:last-child{border:0}
.sim img{width:96px;height:60px;object-fit:cover;border-radius:8px;flex:none}
.sim span{display:flex;flex-direction:column;min-width:0}
.sim b{font-size:14px;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sim small{color:var(--mute);font-size:12px}.sim em{font-style:normal;color:var(--hot);font-weight:800;font-size:14px}
.sim:hover b{color:var(--brand)}
.sidecats{list-style:none;margin:0;padding:0}
.sidecats a{display:flex;justify-content:space-between;gap:8px;color:var(--ink);padding:8px 4px;border-bottom:1px dashed var(--line);font-size:14.5px}
.sidecats a:hover{color:var(--brand)}
.sidecats span{background:var(--soft);color:var(--brand);border-radius:99px;font-size:12px;padding:0 9px;font-weight:700;height:20px}
.sidepromo{display:block;background:linear-gradient(135deg,#1f4fd8,#2f6df6);color:#fff;border:0}
.sidepromo b{display:block;font-size:17px;margin-bottom:4px;color:#fff}.sidepromo span{font-size:14px;color:#e6efff}

/* chữ to hơn, phông Inter như web mẫu */
body{font-family:Inter,system-ui,"Segoe UI",Roboto,sans-serif;font-size:17px}
.topbar{font-size:14.5px}
.nav2 a{font-size:17.5px;font-weight:600;padding:11px 16px}
.hicon,.umenu>summary{font-size:17px;font-weight:600}
.catbtn>summary{font-size:16.5px;padding:12px 18px}
.search input{font-size:16.5px}
.sec h2{font-size:29px}.sec p{font-size:15.5px}
.pc h3{font-size:17.5px;min-height:50px}
.pc .ct{font-size:12.5px}
.pc .pr b{font-size:22px}.pc .pr s{font-size:14.5px}
.pc .go{font-size:16px;padding:10px}
.tile .tb b{font-size:16.5px}.tile .tb small{font-size:13.5px}
.plan ul.tick li{font-size:15.5px}
.usp b{font-size:16px}.usp span{font-size:14px}
.wg h3{font-size:19px}.wg p{font-size:15.5px}
.foot .fcols a{font-size:16px}.foot h4{font-size:19px}
.fbrand p{font-size:16px}
.crumb{font-size:15px}
.cd h1{font-size:30px}
.box h2{font-size:21px}
.filter .ck{font-size:15.5px}
.desc{font-size:16.5px}
@media(max-width:700px){.nav2 a{font-size:15.5px;padding:8px 10px}}

/* ===== Combo khóa học ===== */
.gchips{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 4px}
.gchip{background:#fff;border:1px solid var(--line);color:var(--ink,#1a2340);border-radius:99px;padding:7px 15px;font-weight:700;font-size:14.5px;transition:.15s}
.gchip span{color:var(--mute);font-weight:600;margin-left:4px}
.gchip:hover{border-color:var(--brand);color:var(--brand)}
.gchip.on{background:var(--brand);border-color:var(--brand);color:#fff}.gchip.on span{color:#dbe6ff}
.cmosaic{display:grid;gap:2px;overflow:hidden;background:var(--soft)}
.cmosaic.n4{grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr}
.cmosaic.n3{grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr}.cmosaic.n3 img:first-child{grid-row:1/3}
.cmosaic.n2{grid-template-columns:1fr 1fr}.cmosaic.n1{grid-template-columns:1fr}
.pc .cmosaic img{width:100%;height:100%;object-fit:cover;min-height:0}
.pc.combo .im .badge{z-index:2}
.cdetail{display:grid;grid-template-columns:1fr 360px;gap:26px;margin:14px 0 24px;align-items:start}
.cdetail .cmosaic.big{aspect-ratio:16/8;border-radius:16px}
.cdetail .cmosaic.big img{width:100%;height:100%;object-fit:cover}
.cdetail h1{margin:16px 0 6px;font-size:28px;line-height:1.3}
.clist{display:flex;flex-direction:column;gap:10px;margin-top:10px}
.crow{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px;color:inherit;transition:.15s}
.crow:hover{border-color:var(--brand);box-shadow:var(--shadow)}
.crow img{width:110px;aspect-ratio:16/10;object-fit:cover;border-radius:8px;flex:none}
.crow span{flex:1;min-width:0}.crow b{display:block;font-size:16px;line-height:1.35}.crow small{color:var(--mute)}
.crow em{font-style:normal;font-weight:700;color:var(--mute);text-decoration:line-through;white-space:nowrap}
.cbuy{position:sticky;top:130px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--shadow)}
.cbuy .pr{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}.cbuy .pr b{font-size:32px;color:var(--hot)}.cbuy .pr s{color:var(--mute)}
.cbuy .pr .badge{position:static}
.cbuy .save{color:var(--brand2);margin:4px 0 10px}
.cbuy .ticks{list-style:none;padding:0;margin:10px 0;display:flex;flex-direction:column;gap:6px}
.cbuy .ticks li:before{content:"✓ ";color:var(--brand2);font-weight:800}
@media(max-width:860px){.cdetail{grid-template-columns:1fr}.cbuy{position:static}.crow img{width:84px}}
.cmosaic img{object-position:50% 22%}
.cdetail .cmosaic.big{aspect-ratio:auto;height:340px}
.cdetail .cmosaic.big.n4,.cdetail .cmosaic.big.n3{grid-template-rows:1fr 1fr}
@media(max-width:860px){.cdetail .cmosaic.big{height:230px}}

/* ===== Khung quản trị có menu trái ===== */
.adm{display:grid;grid-template-columns:250px minmax(0,1fr);gap:24px;align-items:start;margin:16px 0 30px}
.admnav{position:sticky;top:126px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:12px;box-shadow:var(--shadow);max-height:calc(100vh - 150px);overflow:auto}
.admt{font-size:11.5px;font-weight:800;letter-spacing:.8px;color:var(--mute);padding:6px 10px}
.admnav a{display:flex;align-items:center;gap:11px;padding:9px 10px;border-radius:11px;color:var(--ink,#1a2340);transition:.15s}
.admnav a i{font-style:normal;font-size:20px;width:26px;text-align:center}
.admnav a b{display:block;font-size:15px;line-height:1.25}
.admnav a small{display:block;color:var(--mute);font-size:12px;font-weight:500}
.admnav a:hover{background:var(--soft)}
.admnav a.on{background:var(--brand);color:#fff}.admnav a.on small{color:#dbe6ff}
.admmain{min-width:0;overflow-x:auto}.admmain h1{margin-top:0}
@media(max-width:900px){.adm{grid-template-columns:1fr}.admnav{position:static;max-height:none;display:flex;gap:6px;overflow-x:auto;padding:8px}.admnav .admt{display:none}.admnav a{flex:none}.admnav a small{display:none}}
.admnav{padding:8px;top:122px;max-height:calc(100vh - 136px)}
.admnav a{padding:6px 9px;gap:9px}.admnav a i{font-size:18px;width:22px}
.admnav a b{font-size:14.5px}.admnav a small{font-size:11.5px}.admt{padding:4px 9px}

/* ===== Menu "Danh mục khóa học" (mega menu gọn, dễ đọc) ===== */
.catmenu{display:block;width:min(900px,94vw);padding:0;border-radius:16px;overflow:hidden;max-height:none;box-shadow:0 18px 50px rgba(20,40,100,.22);z-index:60}
.cm-top{display:flex;gap:12px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line);background:#fff}
.cm-top input{flex:1;min-width:0;padding:10px 14px;border:1px solid var(--line);border-radius:10px;font-size:15px;background:var(--soft)}
.cm-top input:focus{outline:2px solid var(--brand);background:#fff}
.cm-top .cm-all{white-space:nowrap;font-weight:700;color:var(--brand);padding:8px 12px;border-radius:10px}.cm-top .cm-all:hover{background:var(--soft)}
.cm-feat{display:flex;gap:10px;flex-wrap:wrap;padding:12px 16px;background:linear-gradient(90deg,#fff5ea,#eef4ff);border-bottom:1px solid var(--line)}
.cm-feat a{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:99px;padding:8px 14px;font-weight:700;font-size:14.5px;color:var(--ink);box-shadow:0 1px 4px rgba(0,0,0,.05)}
.cm-feat a:hover{border-color:var(--brand);color:var(--brand)}
.cm-feat a span{background:var(--hot);color:#fff;border-radius:99px;padding:1px 8px;font-size:12px}
.cm-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2px 8px;padding:10px 12px 14px;max-height:min(56vh,460px);overflow-y:auto;background:#fff;scrollbar-width:thin}
.cm-grid a{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 12px;border-radius:10px;color:var(--ink);font-size:15.5px;line-height:1.3}
.cm-grid a em{font-style:normal;font-weight:600}
.cm-grid a span{flex:none;min-width:28px;text-align:center;background:var(--soft);color:var(--mute);border-radius:99px;padding:2px 8px;font-size:12.5px;font-weight:700}
.cm-grid a:hover{background:var(--soft);color:var(--brand)}.cm-grid a:hover span{background:var(--brand);color:#fff}
.cm-empty{padding:18px;text-align:center;color:var(--mute)}
@media(max-width:820px){.cm-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.catbtn{position:static}.catmenu{position:fixed;left:8px;right:8px;top:70px;width:auto}}
@media(max-width:520px){.cm-grid{grid-template-columns:1fr}.cm-top{flex-wrap:wrap}}
.rav.rimg{object-fit:cover;background:#fff;border:2px solid #fff;box-shadow:0 2px 10px rgba(0,0,0,.2)}