:root{--navy:#15295a;--gold:#f6b928;--ink:#1d2433;--mut:#5b6475;--bg:#f5f7fb;--line:#e2e6ef;--zalo:#0068ff;--red:#d6336c}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:#fff}
img{max-width:100%;height:auto;display:block}a{color:var(--navy)}h1,h2,h3{line-height:1.25;margin:0 0 .5em}h2{font-size:1.6rem}
.wrap{max-width:1160px;margin:0 auto;padding:0 16px}.narrow{max-width:780px}
.top{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line)}.bar{display:flex;align-items:center;gap:12px;height:58px}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--navy);font-weight:700;font-size:1.05rem}.brand b{color:#c58f00}.brand.light{color:#fff}
nav{margin-left:auto;display:flex;gap:18px}nav a{text-decoration:none;color:var(--ink);font-weight:500}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 16px;border-radius:10px;background:var(--navy);color:#fff;text-decoration:none;font-weight:600;border:2px solid var(--navy);cursor:pointer;font-size:.95rem;text-align:center;min-height:44px}
.btn.zalo{background:var(--zalo);border-color:var(--zalo)}.btn.ghost{background:#fff;color:var(--navy)}.btn.big{padding:13px 20px;font-size:1rem}.btn.sm{padding:6px 14px;min-height:36px}
.hero{background:linear-gradient(160deg,var(--navy),#22408a);color:#fff;padding:40px 0 48px}.hgrid{display:grid;gap:28px;align-items:center}
.hero h1{font-size:clamp(1.8rem,6vw,2.8rem)}.eyebrow{color:var(--gold);font-weight:600;margin:0 0 8px}.lead{font-size:1.08rem;opacity:.95}.sec .lead,.alt .lead{color:var(--mut)}
.hact{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.hact .btn:not(.zalo){background:var(--gold);color:var(--navy);border-color:var(--gold)}
.ticks{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px 18px;font-size:.95rem}.ticks li:before{content:"✓ ";color:var(--gold);font-weight:700}
.hpics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.hpics img{border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.3)}.hpics img:nth-child(2){transform:translateY(-14px)}
.sec{padding:44px 0}.alt{background:var(--bg)}
.filters{display:flex;flex-direction:column;gap:8px;margin-bottom:10px}.frow{display:flex;gap:8px;overflow-x:auto;padding-bottom:4px;scrollbar-width:none;align-items:center}.frow::-webkit-scrollbar{display:none}
.f{flex:none;border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 14px;font:inherit;font-size:.9rem;cursor:pointer;color:var(--ink);min-height:40px}.f.on{background:var(--navy);color:#fff;border-color:var(--navy)}.flab{flex:none;font-size:.9rem;color:var(--mut)}
.small{font-size:.88rem;color:var(--mut)}
.grid{display:grid;grid-template-columns:1fr;gap:18px}.card{border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;background:#fff}.card[hidden]{display:none}
.cimg{background:var(--bg);aspect-ratio:1}.cimg img{width:100%;height:100%;object-fit:cover}.cbody{padding:14px;display:flex;flex-direction:column;flex:1}
.card h3{font-size:1.02rem}.card h3 a{text-decoration:none;color:var(--ink)}.chips{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}.chip{font-size:.75rem;background:#eef2fb;color:var(--navy);padding:2px 9px;border-radius:999px;font-weight:600}
.meta{display:flex;flex-wrap:wrap;gap:4px 10px;color:var(--mut);font-size:.88rem;margin:0 0 8px}.meta span{white-space:nowrap}.meta span+span{border-left:1px solid var(--line);padding-left:10px}
.price{display:flex;align-items:baseline;flex-wrap:wrap;gap:8px;margin:auto 0 12px}.price .now{font-size:1.3rem;font-weight:800;color:var(--red)}.price s{color:var(--mut)}.tag{font-size:.72rem;background:#fff3cd;color:#8a5a00;padding:2px 8px;border-radius:6px;font-weight:700}
.price.big .now{font-size:1.8rem}.cact{display:grid;grid-template-columns:1fr 1fr;gap:8px}.cact .btn{padding:10px 8px;font-size:.9rem}
.steps{list-style:none;padding:0;margin:20px 0;display:grid;gap:12px;counter-reset:s}.steps li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 16px 16px 64px;position:relative;counter-increment:s}
.steps li:before{content:counter(s);position:absolute;left:16px;top:16px;width:34px;height:34px;border-radius:50%;background:var(--gold);color:var(--navy);font-weight:800;display:grid;place-items:center}.steps b{display:block}.steps span{color:var(--mut);font-size:.95rem}
.bank{border:2px dashed #e0a800;background:#fffbea;border-radius:12px;padding:16px}.phbadge{margin:0 0 8px;font-weight:800;color:#8a5a00;font-size:.85rem;letter-spacing:.03em}
.bank dl,.facts{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;margin:0}dt{color:var(--mut)}dd{margin:0;font-weight:600}.ph{background:#fff3cd;color:#8a5a00;padding:0 4px;border-radius:4px;font-weight:700}
details{border-bottom:1px solid var(--line);padding:12px 0}summary{font-weight:600;cursor:pointer;padding:4px 0}details p{margin:8px 0 0;color:var(--mut)}
footer{background:var(--navy);color:#dfe5f3;padding:36px 0 90px;font-size:.95rem}footer a{color:#fff}footer h4{color:var(--gold);margin:0 0 6px}.fgrid{display:grid;gap:20px}.copy{opacity:.7;font-size:.82rem;margin-top:20px}
.pd{padding-top:12px;padding-bottom:30px}.crumb a{text-decoration:none;font-weight:500}.pgrid{display:grid;gap:22px}.gallery #main{width:100%;border-radius:14px;border:1px solid var(--line);aspect-ratio:1;object-fit:contain;background:var(--bg)}
.thumbs{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:8px}.thumb{padding:0;border:2px solid var(--line);border-radius:10px;overflow:hidden;cursor:pointer;background:#fff}.thumb.on{border-color:var(--navy)}
.info h1{font-size:clamp(1.35rem,4.5vw,1.9rem)}.vi{color:var(--mut);font-size:1.02rem}.buy{display:grid;gap:10px;margin:6px 0 8px}.facts{margin-top:16px;padding-top:16px;border-top:1px solid var(--line)}.facts dd{font-weight:500}
.sec0{margin-top:30px;max-width:820px}.sec0 h2{font-size:1.3rem;margin-top:26px}.inside li{margin-bottom:4px}
.stick{position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid var(--line);padding:8px 16px;display:flex;align-items:center;justify-content:space-between;gap:10px;z-index:30;box-shadow:0 -4px 16px rgba(0,0,0,.08)}.stick .price,.stick span.price{margin:0}.stick>span{display:flex;align-items:baseline;gap:6px;flex-wrap:wrap}.stick .now{font-weight:800;color:var(--red);font-size:1.15rem}.stick s{color:var(--mut);font-size:.85rem}.stick .tag{display:none}
#toast{position:fixed;left:50%;bottom:80px;transform:translateX(-50%) translateY(20px);background:#1d2433;color:#fff;padding:10px 16px;border-radius:10px;opacity:0;transition:.25s;pointer-events:none;z-index:40;max-width:90vw;text-align:center}#toast.show{opacity:1;transform:translateX(-50%)}
@media(min-width:600px){.grid{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(2,1fr)}.buy{grid-template-columns:1fr 1fr}}
@media(min-width:900px){.grid{grid-template-columns:repeat(3,1fr)}.hgrid{grid-template-columns:1.1fr 1fr}.hero{padding:64px 0 72px}.steps{grid-template-columns:repeat(4,1fr)}.fgrid{grid-template-columns:1.3fr 1fr 1fr}.pgrid{grid-template-columns:1fr 1fr;gap:40px}.stick{display:none}footer{padding-bottom:36px}.filters{flex-direction:column}}
@media(min-width:1100px){.grid{grid-template-columns:repeat(4,1fr)}}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;z-index:99;background:#fff;padding:8px}
nav a[aria-current]{color:var(--navy);font-weight:700;box-shadow:inset 0 -2px var(--gold)}
.menu{display:none;margin-left:auto;background:none;border:0;width:44px;height:44px;padding:10px;cursor:pointer}.menu span{display:block;height:2px;background:var(--navy);margin:5px 0;border-radius:2px}
.btn.gold{background:var(--gold);color:var(--navy);border-color:var(--gold)}
.phero{background:linear-gradient(160deg,var(--navy),#22408a);color:#fff;padding:32px 0 36px}.phero h1{font-size:clamp(1.7rem,5vw,2.4rem);margin:0 0 6px}.phero .lead{margin:0;opacity:.92}.s1{padding-top:24px}
.shead{display:flex;justify-content:space-between;align-items:baseline;gap:10px}.shead a{font-weight:600;white-space:nowrap}
.cats{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.cat{display:flex;flex-direction:column;gap:4px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;text-decoration:none;color:var(--ink);border-top:4px solid var(--gold)}.cat b{color:var(--navy)}.cat span{font-size:.88rem;color:var(--mut)}.cat em{font-style:normal;font-size:.8rem;font-weight:700;color:#8a5a00;margin-top:auto}
.why{display:grid;gap:14px}.why>div{border:1px solid var(--line);border-radius:14px;padding:18px;background:#fff}.why h3{font-size:1.05rem;color:var(--navy)}.why p{margin:0;color:var(--mut)}
.center2{display:grid;gap:24px}.eyebrow.dark{color:#a77700}.addr{background:#fff;border-left:4px solid var(--gold);padding:10px 14px;border-radius:8px}
.latest{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}.latest a{display:block;padding:10px 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--ink);font-weight:600}.latest time{display:block;font-size:.8rem;color:var(--mut);font-weight:400}.latest a.more{border:0;color:var(--navy)}
.cta{background:var(--gold);padding:32px 0}.ctab{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px}.cta h2{color:var(--navy);margin:0 0 4px;font-size:1.4rem}.cta p{margin:0}.cta .btn.gold{background:var(--navy);color:#fff;border-color:var(--navy)}
.bank{border:2px solid var(--gold);background:#fffbea;border-radius:12px;padding:16px;margin-top:16px}.bhead{margin:0 0 10px;font-weight:800;color:var(--navy)}.bank dd{overflow-wrap:anywhere}.acct{font-size:1.2rem;letter-spacing:.04em;margin-right:6px}.bank .btn.sm{vertical-align:middle;min-height:32px;padding:4px 10px;font-size:.82rem}
code{background:#eef2fb;padding:1px 5px;border-radius:4px;font-size:.92em}.note{margin-top:18px;border:1px solid var(--line);border-radius:12px;padding:16px;background:#fff}.note code{display:inline-block;white-space:normal}
.posts{display:grid;gap:18px;margin-top:14px}.post{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;display:flex;flex-direction:column}.post[hidden]{display:none}.pimg img{width:100%;aspect-ratio:1200/630;object-fit:cover}.pbody{padding:14px 16px}.post h3 a{text-decoration:none;color:var(--ink)}.post p{margin:0 0 8px;color:var(--mut)}
.pmeta{font-size:.85rem;color:var(--mut);margin:0 0 6px}.ptags{display:flex;flex-wrap:wrap;gap:6px}a.chip{text-decoration:none}
.art{padding-top:12px;padding-bottom:30px}.art h1{font-size:clamp(1.6rem,5vw,2.3rem)}.acover{border-radius:14px;margin:16px 0;width:100%}
.prose{font-size:1.04rem}.prose h2{font-size:1.35rem;margin-top:1.6em}.prose li{margin-bottom:6px}.prose blockquote{margin:16px 0;border-left:4px solid var(--gold);background:var(--bg);padding:4px 16px;border-radius:0 8px 8px 0}
.rel{margin:28px 0;border:2px solid var(--gold);border-radius:14px;padding:16px;background:#fffbea}.relp{display:grid;grid-template-columns:96px 1fr;gap:14px;align-items:start}.relp img{border-radius:10px}.relp h3{font-size:1rem}.relp h3 a{color:var(--ink);text-decoration:none}.relp .price{margin:0 0 8px}
.more2 h2{font-size:1.2rem}.more2 a{display:block;padding:10px 0;border-bottom:1px solid var(--line);font-weight:600;text-decoration:none}
.contact{display:grid;gap:14px}.ccard{border:1px solid var(--line);border-radius:14px;padding:18px}.big2{font-size:1.6rem;font-weight:800;color:var(--navy);margin:0 0 10px}
.small.light{color:#b9c3dc}.crumb{font-size:.9rem;color:var(--mut)}
@media(max-width:899px){.menu{display:block}.bar .btn{margin-left:0}nav#mnav{display:none;position:absolute;top:58px;left:0;right:0;background:#fff;flex-direction:column;gap:0;border-bottom:1px solid var(--line);box-shadow:0 8px 20px rgba(0,0,0,.08)}nav#mnav.open{display:flex}nav#mnav a{padding:12px 16px;border-top:1px solid var(--line)}nav a[aria-current]{box-shadow:inset 3px 0 var(--gold)}}
@media(min-width:600px){.why{grid-template-columns:repeat(2,1fr)}.cats{grid-template-columns:repeat(3,1fr)}.posts{grid-template-columns:repeat(2,1fr)}.contact{grid-template-columns:repeat(3,1fr)}}
@media(min-width:900px){.why{grid-template-columns:repeat(4,1fr)}.center2{grid-template-columns:1.4fr 1fr}.posts{grid-template-columns:repeat(3,1fr)}.grid.g3{grid-template-columns:repeat(3,1fr)}}

/* Editable navigation and the free library; paid product styles stay unchanged. */
.bar{height:auto;min-height:58px;flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
.brand{flex-shrink:0}nav#mnav{flex-wrap:wrap;align-items:center;gap:8px 16px;flex:1;justify-content:flex-end;min-width:0}nav#mnav a{overflow-wrap:anywhere;max-width:100%}
.comic-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:24px}
.comic-card,.freebie-category{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff}
.comic-card{max-width:620px}.comic-card h2{font-size:1.35rem}.comic-cover{width:100%;max-height:400px;object-fit:contain;background:var(--bg)}
.comic-placeholder{padding:40px 20px;background:linear-gradient(135deg,#e8f1ff,#fff2c6);color:var(--navy);font-size:2.5rem;font-weight:800;text-align:center}
.freebie-category{padding:28px;border-top:5px solid var(--gold)}
@media(max-width:899px){.bar{flex-wrap:nowrap}.brand{flex-shrink:1;min-width:0}.brand img{width:214px;max-width:100%}.menu{flex-shrink:0}.bar>.btn{flex-shrink:0}nav#mnav{top:100%;flex-wrap:nowrap;align-items:stretch;justify-content:flex-start;gap:0;max-height:calc(100dvh - 80px);overflow-y:auto}nav#mnav a{flex-shrink:0}}

.halloween-promo{border-top-color:#ef8c18;margin-bottom:24px}.halloween-promo .btn{background:#2c1749;border-color:#2c1749}.halloween-cover{max-width:360px;width:100%;margin:24px auto;border-radius:12px}a[aria-disabled="true"]{opacity:.65;cursor:default}

.launch-deadline{display:block;font-weight:400;font-size:.8rem;color:var(--mut);margin-top:6px}

/* Three clear learning goals, shared by Premium and Freebies. */
.path-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.path-card{display:block;border:2px solid #d6e4df;border-radius:16px;padding:24px;color:#193b36;background:#f3faf6;text-decoration:none}.path-card h3{font-size:1.5rem;margin:0 0 12px}.path-card p{line-height:1.6}.path-ielts{background:#edf3ff;border-color:#c6d6ee}.path-kids{background:#fff8e6;border-color:#efdb9d}.path-card:focus-visible{outline:3px solid #193b36;outline-offset:4px}.availability-note{padding:24px;background:#fff8e6;border-radius:12px}@media(max-width:700px){.path-grid{grid-template-columns:1fr}.path-card{padding:20px}}

/* Paid mock catalog; independent of the free interactive diagnostics. */
.mock-skill-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin:24px 0}.mock-skill-card{background:#fff;border:1px solid #dce5ef;border-radius:16px;padding:25px}.mock-skill-card h2{font-size:1.35rem;margin-top:0}.mock-exam-links{display:flex;flex-wrap:wrap;gap:14px}.mock-catalog-links{background:#f4f8fc}@media(max-width:640px){.mock-skill-grid{grid-template-columns:1fr}.mock-skill-card{padding:20px}}