/* Kiem tra trinh do tieng Anh (cong-cu/trinh-do-tieng-anh): man mo dau, cau hoi, ket qua, giay chung nhan, phan SEO. Mau theo :root (theme nguoi-hoc). */
.tdta { min-height: 380px; }
.tdta-boot { padding: 60px 0; display: grid; gap: 12px; }
.td-h { font-size: clamp(22px, 3vw, 28px); }

/* mo dau */
.td-last { display: flex; align-items: center; gap: 12px; background: var(--soft); border-radius: 16px; padding: 12px 14px; margin-bottom: 18px; }
.td-last > div:nth-child(2) { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.td-last b { font-size: 15.5px; }
.td-mini { flex: none; width: 52px; height: 52px; border-radius: 50%; background: var(--c); color: #fff; display: grid; place-items: center; font-weight: 800; font-size: 14px; }
.td-ages { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.td-age { display: flex; flex-direction: column; align-items: center; gap: 2px; font: inherit; color: var(--ink); background: var(--bg); border: 2px solid var(--line); border-radius: 18px; padding: 16px 8px; cursor: pointer; transition: border-color .15s, transform .15s; }
.td-age:hover { transform: translateY(-2px); }
.td-age .ic { font-size: 30px; line-height: 1.2; }
.td-age b { font-size: 16px; }
.td-age span:last-child { font-size: 13px; color: var(--ink2); }
.td-age.on { border-color: var(--pri); background: var(--soft); box-shadow: 0 10px 24px -16px var(--pri); }
.td-facts { list-style: none; padding: 0; margin: 18px 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 16px; font-size: 15px; color: var(--ink2); }
.td-facts li { display: flex; gap: 8px; }
.td-go { width: 100%; }
@media (max-width: 620px) { .td-ages { grid-template-columns: 1fr 1fr; } .td-facts { grid-template-columns: 1fr; } }

/* cau hoi */
.td-q-wrap { max-width: 720px; margin: 0 auto; }
.td-top { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.td-pill { display: inline-flex; align-items: center; font-size: 13.5px; font-weight: 800; color: var(--c); background: color-mix(in srgb, var(--c) 13%, #fff); padding: 5px 12px; border-radius: 99px; white-space: nowrap; }
.td-pill.sm { font-size: 12px; padding: 3px 10px; }
.td-time { font-variant-numeric: tabular-nums; font-weight: 700; font-size: 14px; color: var(--ink2); }
.td-time.over { color: #DC2626; }
.td-bar { height: 8px; border-radius: 99px; background: var(--soft); overflow: hidden; margin: 12px 0 10px; }
.td-bar i { display: block; height: 100%; background: var(--pri); border-radius: 99px; transition: width .4s; }
.td-meta { font-size: 13.5px; font-weight: 700; color: var(--ink2); text-transform: uppercase; letter-spacing: .03em; }
.td-pass { background: var(--bg); border: 1px solid var(--line); border-left: 4px solid var(--pri); border-radius: 12px; padding: 12px 14px; margin: 12px 0 4px; font-size: 16px; line-height: 1.65; max-height: 46vh; overflow: auto; }
.td-listen { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; background: var(--soft); border-radius: 14px; padding: 12px; margin: 12px 0 4px; }
.td-plays { font-size: 13.5px; color: var(--ink2); }
.td-tx { flex-basis: 100%; display: flex; flex-direction: column; gap: 4px; background: var(--card); border-radius: 10px; padding: 10px 12px; font-size: 16.5px; }
.td-tx[hidden] { display: none; }
.td-link { border: 0; background: none; font: inherit; font-size: 14px; font-weight: 700; color: var(--pri); cursor: pointer; padding: 6px 0; text-decoration: underline; text-underline-offset: 3px; }
.td-link[hidden] { display: none; }
.td-qt { font-size: clamp(20px, 2.6vw, 24px); line-height: 1.35; margin: 14px 0 14px; letter-spacing: -.01em; overflow-wrap: anywhere; }
.td-opts { display: grid; gap: 10px; }
.td-opt { display: flex; align-items: center; gap: 12px; width: 100%; min-height: 56px; text-align: left; font: inherit; font-size: 17px; font-weight: 600; color: var(--ink); background: var(--card); border: 2px solid var(--line); border-radius: 16px; padding: 10px 14px; cursor: pointer; transition: border-color .12s, background .12s, transform .12s; }
.td-opt span { min-width: 0; overflow-wrap: anywhere; }
.td-opt kbd { flex: none; width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; font: inherit; font-size: 14px; font-weight: 800; background: var(--soft); color: var(--pri); }
.td-opt:hover:not(:disabled) { border-color: var(--pri); transform: translateY(-1px); }
.td-opt.sel { border-color: var(--pri); background: var(--soft); }
.td-opt.sel kbd { background: var(--pri); color: #fff; }
.td-opt:disabled { cursor: default; }
.td-foot { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-top: 14px; }
@media (max-width: 760px), (hover: none) { .td-kb { display: none; } }
.td-between { text-align: center; padding: 30px 0; display: grid; gap: 10px; justify-items: center; }
.td-big { font-size: 54px; }

/* ket qua */
.td-oldnote { margin-bottom: 8px; }
.td-hero { display: flex; gap: 20px; align-items: center; background: linear-gradient(135deg, color-mix(in srgb, var(--c) 14%, #fff), #fff); border: 1.5px solid color-mix(in srgb, var(--c) 30%, #fff); border-radius: 22px; padding: 20px; }
.td-hero h2 { font-size: clamp(26px, 4vw, 38px); color: var(--ink); }
.td-hero p { margin: 4px 0 0; color: var(--ink2); }
.td-kick { font-size: 13px; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; color: var(--c); }
.td-badge { flex: none; width: 112px; height: 112px; border-radius: 50%; background: var(--c); color: #fff; display: flex; flex-direction: column; align-items: center; justify-content: center; box-shadow: 0 0 0 6px #fff, 0 0 0 8px var(--c), 0 18px 30px -14px var(--c); }
.td-badge span { font-size: 30px; font-weight: 800; line-height: 1; }
.td-badge small { font-size: 12px; font-weight: 700; opacity: .9; margin-top: 4px; letter-spacing: .08em; }
.td-stats { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
.td-stats span { background: #fff; border: 1px solid var(--line); border-radius: 99px; padding: 4px 12px; font-size: 14px; font-weight: 700; }
@media (max-width: 560px) { .td-hero { flex-direction: column; text-align: center; } .td-stats { justify-content: center; } .td-badge { width: 96px; height: 96px; } }
.td-sec { margin-top: 22px; }
.td-sec h3 { font-size: 19px; margin-bottom: 10px; }
.td-can { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.td-can li { display: flex; gap: 10px; font-size: 15.5px; color: var(--ink2); }
.td-can li::before { content: '✓'; flex: none; width: 22px; height: 22px; border-radius: 50%; background: var(--soft); color: var(--pri); display: grid; place-items: center; font-weight: 900; font-size: 12px; margin-top: 2px; }
.td-ladder { list-style: none; padding: 0; margin: 0 0 6px; display: grid; gap: 6px; }
.td-ladder li { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 12px; background: var(--bg); font-size: 15px; }
.td-ladder li b { flex: 1; font-weight: 700; }
.td-ladder li em { font-style: normal; font-size: 13.5px; color: var(--ink2); }
.td-ladder .dot { flex: none; width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--line); display: grid; place-items: center; font-size: 12px; font-weight: 900; color: #fff; }
.td-ladder li.ok .dot { background: var(--c); border-color: var(--c); }
.td-ladder li.no { opacity: .75; }
.td-ladder li.me { background: color-mix(in srgb, var(--c) 14%, #fff); box-shadow: inset 0 0 0 1.5px var(--c); }
.td-skills { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 10px 18px; }
.td-sk > div:first-child { display: flex; justify-content: space-between; font-size: 14.5px; }
.td-sk span { color: var(--ink2); font-size: 13.5px; }
.td-sk .rb { height: 8px; border-radius: 9px; background: var(--soft); overflow: hidden; margin-top: 4px; }
.td-sk .rb i { display: block; height: 100%; border-radius: 9px; }
.td-plan { background: var(--bg); border: 1px solid var(--line); border-radius: 18px; padding: 16px 18px 18px; }
.td-plan ol { margin: 0 0 14px; padding-left: 22px; display: grid; gap: 6px; font-size: 15.5px; color: var(--ink2); }
.td-plan .btn { width: 100%; text-align: center; }
.td-rv { display: grid; gap: 10px; margin-bottom: 12px; }
.td-ri { border: 1px solid var(--line); border-radius: 14px; padding: 12px 14px; background: var(--card); }
.td-ri-h { display: flex; gap: 8px; align-items: center; margin-bottom: 6px; }
.td-ri-q { font-weight: 700; font-size: 16px; overflow-wrap: anywhere; }
.td-ri-t { font-size: 14.5px; color: var(--ink2); margin-bottom: 4px; }
.td-ri-p { font-size: 14px; margin-bottom: 6px; } .td-ri-p summary { cursor: pointer; color: var(--pri); font-weight: 700; }
.td-ri-p div { background: var(--bg); border-radius: 10px; padding: 8px 10px; margin-top: 6px; line-height: 1.6; }
.td-ri-a { display: flex; flex-wrap: wrap; gap: 6px 14px; margin: 6px 0; font-size: 15px; }
.td-ri-a .bad { color: #B91C1C; text-decoration: line-through; text-decoration-thickness: 1px; }
.td-ri-a .good { color: #15803D; font-weight: 700; }
.td-ri-e { font-size: 14.5px; color: var(--ink2); background: var(--bg); border-radius: 10px; padding: 8px 10px; }
.td-cert { border-top: 1px dashed var(--line); padding-top: 18px; }
.td-cv { margin-top: 14px; }
.td-cv[hidden] { display: none; }
.td-canvas { display: block; width: 100%; height: auto; border-radius: 12px; box-shadow: 0 20px 40px -24px rgba(0,0,0,.45); }
.td-cv-act { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.td-share { display: flex; align-items: center; gap: 12px; background: var(--soft); border-radius: 16px; padding: 14px 16px; }
.td-share > div { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.td-share .cc-note { overflow-wrap: anywhere; }
@media (max-width: 560px) { .td-share { flex-direction: column; align-items: stretch; } .td-cv-act { grid-template-columns: 1fr; } }
.td-again { text-align: center; margin-top: 22px; }

/* phan SEO */
.tdta-seo { margin-top: 36px; }
.tdta-seo .cc-h2 { margin-top: 28px; }
.tdta-seo p { color: var(--ink2); max-width: 60em; }
.tdta-tbl { overflow-x: auto; border: 1px solid var(--line); border-radius: 16px; background: var(--card); }
.tdta-tbl table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 640px; }
.tdta-tbl th, .tdta-tbl td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tdta-tbl th { background: var(--soft); font-size: 13.5px; text-transform: uppercase; letter-spacing: .03em; }
.tdta-tbl tr:last-child td { border-bottom: 0; }
.tdta-ul { color: var(--ink2); display: grid; gap: 6px; }
.tdta-faq { display: grid; gap: 10px; }
.tdta-faq details { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 12px 16px; }
.tdta-faq summary { cursor: pointer; font-weight: 700; }
.tdta-faq details p { margin: 8px 0 0; }