:root{--ink:#2f55d4;--ink-deep:#172554;--ink-soft:#e7ecfb;--hl:#ffe066;--listening:#12a38f;--speaking:#ff7a45;--reading:#2f55d4;--writing:#ffc93c;--paper:#f7f8fc;--sheet:#fff;--grid:#dce2f2;--red-pen:#d7263d;--red-soft:#fde8eb;--tick:#1e8e5a;--tick-soft:#e3f4ec;--text:#161a33;--muted:#5b6283;--line:#d6dbec;--font:"Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", sans-serif;--font-ipa:"Noto Sans", "Segoe UI", "Arial Unicode MS", sans-serif;--r-sm:6px;--r-md:10px;--r-lg:18px;--wrap:1120px}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--paper);color:var(--text);font-family:var(--font);margin:0;font-size:17px;line-height:1.6}a{color:var(--ink)}a:hover{color:var(--ink-deep)}:focus-visible{outline:3px solid var(--hl);outline-offset:2px;box-shadow:0 0 0 5px var(--ink);border-radius:4px}h1,h2,h3{letter-spacing:-.02em;margin:0;line-height:1.15}p{margin:0}.wrap{width:min(var(--wrap), 100% - 32px);margin-inline:auto}.muted{color:var(--muted)}.ipa{font-family:var(--font-ipa);color:var(--muted)}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.hl{background:linear-gradient(176deg, transparent 0 46%, var(--hl) 46% 90%, transparent 90%);-webkit-box-decoration-break:clone;box-decoration-break:clone;margin:0 -.06em;padding:0 .12em}.site-header{z-index:20;background:color-mix(in srgb, var(--paper) 92%, transparent);-webkit-backdrop-filter:saturate(1.4)blur(8px);backdrop-filter:saturate(1.4)blur(8px);border-bottom:1px solid var(--line);position:sticky;top:0}.site-header .wrap{align-items:center;gap:24px;height:64px;display:flex}.logo{color:var(--ink-deep);letter-spacing:-.03em;align-items:center;gap:10px;font-size:22px;font-weight:800;text-decoration:none;display:inline-flex}.logo .anh{color:var(--ink)}.logo-mark{flex:none;grid-template-columns:1fr 1fr;gap:2.5px;width:26px;height:26px;display:grid}.logo-mark i{border-radius:3px;display:block}.logo-mark i:first-child{background:var(--listening);border-top-left-radius:7px}.logo-mark i:nth-child(2){background:var(--speaking);border-top-right-radius:7px}.logo-mark i:nth-child(3){background:var(--reading);border-bottom-left-radius:7px}.logo-mark i:nth-child(4){background:var(--writing);border-bottom-right-radius:7px}.nav{align-items:center;gap:20px;margin-left:auto;font-size:15px;display:flex}.nav a{color:var(--text);font-weight:500;text-decoration:none}.nav a:hover{color:var(--ink)}.nav a.btn,.nav a.btn:hover{color:#fff}.nav .badge{color:var(--ink-deep);background:var(--hl);border-radius:99px;padding:2px 8px;font-size:12px;font-weight:700}@media (max-width:720px){.nav .hide-sm{display:none}}.btn{font:inherit;border-radius:var(--r-md);border:1.5px solid var(--ink);background:var(--ink);color:#fff;cursor:pointer;justify-content:center;align-items:center;gap:8px;padding:12px 22px;font-size:16px;font-weight:600;text-decoration:none;transition:background .15s,transform .1s;display:inline-flex}.btn:hover{background:var(--ink-deep);color:#fff}.btn:active{transform:translateY(1px)}.btn.ghost{color:var(--ink);background:0 0}.btn.ghost:hover{background:var(--ink-soft)}.btn.small{padding:8px 14px;font-size:14px}.btn[disabled]{opacity:.5;cursor:not-allowed}.hero{background-color:var(--sheet);background-image:linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);border-bottom:1px solid var(--line);background-size:28px 28px}.hero .wrap{grid-template-columns:1.1fr .9fr;align-items:center;gap:48px;padding-block:72px 80px;display:grid}.hero h1{color:var(--ink-deep);max-width:13ch;font-size:clamp(36px,5.4vw,64px);font-weight:800}.hero .lead{color:var(--muted);max-width:46ch;margin-top:20px;font-size:19px}.hero .actions{flex-wrap:wrap;gap:12px;margin-top:32px;display:flex}.hero .facts{color:var(--muted);flex-wrap:wrap;gap:28px;margin-top:36px;font-size:15px;display:flex}.hero .facts b{color:var(--ink);font-size:26px;font-weight:800;display:block}@media (max-width:860px){.hero .wrap{grid-template-columns:1fr;gap:40px;padding-block:48px 56px}}.card-stage{perspective:1400px}.flashcard{width:100%;min-height:300px;transform-style:preserve-3d;cursor:pointer;font:inherit;text-align:left;color:inherit;background:0 0;border:0;padding:0;transition:transform .5s cubic-bezier(.2,.7,.2,1);position:relative}.flashcard.flipped{transform:rotateY(180deg)}.face{backface-visibility:hidden;background:var(--sheet);border:1.5px solid var(--ink-deep);border-radius:var(--r-lg);box-shadow:6px 6px 0 var(--ink-deep);flex-direction:column;padding:28px 28px 24px;display:flex;position:absolute;inset:0}.face.back{transform:rotateY(180deg)}.face .kind{color:var(--ink);font-size:13px;font-weight:600}.face .term{color:var(--ink-deep);margin-top:auto;font-size:clamp(28px,4vw,40px);font-weight:800;line-height:1.15}.face .ipa{margin-top:8px;font-size:17px}.face .hint{color:var(--muted);justify-content:space-between;margin-top:auto;padding-top:20px;font-size:13px;display:flex}.face .meaning{color:var(--ink-deep);margin-top:8px;font-size:24px;font-weight:700}.face .example{border-left:3px solid var(--hl);margin-top:18px;padding-left:14px}.face .example p+p{color:var(--muted);margin-top:4px;font-size:15px}@media (prefers-reduced-motion:reduce){.flashcard{transition:none}}.speak-btn{border:1.5px solid var(--line);background:var(--sheet);cursor:pointer;width:36px;height:36px;color:var(--ink);border-radius:99px;place-items:center;display:inline-grid}.speak-btn:hover{border-color:var(--ink)}.section{padding-block:72px}.section-head{flex-wrap:wrap;justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px;display:flex}.section-head h2{color:var(--ink-deep);font-size:clamp(28px,3.4vw,40px);font-weight:800}.section-head p{color:var(--muted);max-width:48ch}.toc{columns:2;column-gap:48px;margin:0;padding:0;list-style:none}.toc li{break-inside:avoid}.toc a{border-bottom:1px dashed var(--line);color:var(--text);grid-template-columns:2.2em 1fr auto;align-items:baseline;gap:12px;padding:14px 4px;text-decoration:none;display:grid}.toc a:hover .toc-name{background:linear-gradient(176deg, transparent 0 50%, var(--hl) 50% 92%, transparent 92%)}.toc .toc-num{color:var(--ink);font-variant-numeric:tabular-nums;font-weight:700}.toc .toc-name{font-weight:600}.toc .toc-vi{color:var(--muted);font-size:14px;font-weight:400;display:block}.toc .toc-meta{color:var(--muted);white-space:nowrap;font-size:13px}.toc .lock{color:var(--ink);font-weight:600}@media (max-width:760px){.toc{columns:1}}.modes{border-top:1.5px solid var(--ink-deep);grid-template-columns:repeat(4,1fr);gap:0;display:grid}.modes>div{padding:24px 24px 8px 0}.modes>div+div{border-left:1px solid var(--line);padding-left:24px}.modes h3{color:var(--ink-deep);font-size:19px}.modes p{color:var(--muted);margin-top:6px;font-size:15px}@media (max-width:860px){.modes{grid-template-columns:1fr 1fr}.modes>div:nth-child(3){border-left:0;padding-left:0}}.band{background:var(--ink-deep);color:#fff}.band .wrap{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:32px;padding-block:56px;display:flex}.band h2{max-width:22ch;font-size:clamp(26px,3vw,36px);font-weight:800}.band p{color:#c9cff0;max-width:52ch;margin-top:10px}.band .btn{background:var(--speaking);color:#3a1405;border-color:var(--speaking)}.band .btn:hover{background:#fff;border-color:#fff}.site-footer{border-top:1px solid var(--line);color:var(--muted);padding-block:32px;font-size:14px}.site-footer .wrap{flex-wrap:wrap;justify-content:space-between;gap:16px;display:flex}.study{grid-template-columns:260px 1fr;align-items:start;gap:40px;padding-block:40px 72px;display:grid}.study aside{position:sticky;top:88px}.study aside h1{color:var(--ink-deep);font-size:26px;font-weight:800}.study aside .vi{color:var(--muted);margin-top:4px}.meter{margin-top:20px}.meter .bar{background:var(--ink-soft);border-radius:99px;height:8px;display:flex;overflow:hidden}.meter .bar span{height:100%;display:block}.meter dl{grid-template-columns:1fr auto;gap:4px 12px;margin:12px 0 0;font-size:14px;display:grid}.meter dt{color:var(--muted)}.meter dd{text-align:right;font-variant-numeric:tabular-nums;margin:0;font-weight:700}.dot{border-radius:50%;width:9px;height:9px;margin-right:6px;display:inline-block}@media (max-width:860px){.study{grid-template-columns:1fr;gap:24px}.study aside{position:static}}.tabs{border-bottom:1.5px solid var(--line);gap:4px;margin-bottom:28px;display:flex;overflow-x:auto}.tabs button{font:inherit;color:var(--muted);cursor:pointer;white-space:nowrap;background:0 0;border:0;border-bottom:3px solid #0000;margin-bottom:-1.5px;padding:10px 14px;font-size:15px;font-weight:600}.tabs button[aria-selected=true]{color:var(--ink-deep);border-bottom-color:var(--ink)}.counter{color:var(--muted);font-variant-numeric:tabular-nums;margin-bottom:14px;font-size:14px}.controls{flex-wrap:wrap;gap:10px;margin-top:28px;display:flex}.controls .btn.review{background:var(--sheet);color:var(--red-pen);border-color:var(--red-pen)}.controls .btn.review:hover{background:var(--red-soft)}.controls .btn.learned{background:var(--tick);border-color:var(--tick)}.controls .btn.learned:hover{background:#156b44}.controls .spacer{flex:1}.prompt-card{background:var(--sheet);border:1.5px solid var(--line);border-radius:var(--r-lg);padding:28px}.prompt-card .q{color:var(--ink-deep);font-size:28px;font-weight:800}.options{gap:10px;margin-top:20px;display:grid}.option{font:inherit;text-align:left;border-radius:var(--r-md);border:1.5px solid var(--line);background:var(--sheet);cursor:pointer;color:var(--text);padding:14px 16px}.option:hover:not([disabled]){border-color:var(--ink)}.option.correct{border-color:var(--tick);background:var(--tick-soft)}.option.wrong{border-color:var(--red-pen);background:var(--red-soft);text-decoration:line-through;-webkit-text-decoration-color:var(--red-pen);text-decoration-color:var(--red-pen)}.feedback{min-height:1.6em;margin-top:16px;font-weight:600}.feedback.ok{color:var(--tick)}.feedback.no{color:var(--red-pen)}.write-input{width:100%;font:inherit;border:0;border-bottom:2px solid var(--ink);color:var(--ink-deep);background:0 0;margin-top:16px;padding:12px 4px;font-size:22px;font-weight:600}.write-input:focus{background:var(--ink-soft);outline:none}.match{grid-template-columns:1fr 1fr;gap:10px;display:grid}.match .option{font-size:15px}.match .option.sel{border-color:var(--ink);background:var(--ink-soft)}.match .option.done{opacity:.35;border-style:dashed}.empty{border:1.5px dashed var(--line);border-radius:var(--r-lg);color:var(--muted);padding:32px}.empty h2{color:var(--ink-deep);margin-bottom:8px;font-size:22px}.narrow{max-width:560px;margin-inline:auto;padding-block:56px 80px}.narrow h1{color:var(--ink-deep);font-size:clamp(30px,4vw,44px);font-weight:800}.narrow>p{color:var(--muted);margin-top:12px}.form{gap:12px;margin-top:28px;display:grid}.form label{font-size:15px;font-weight:600}.form input[type=email]{font:inherit;border:1.5px solid var(--line);border-radius:var(--r-md);background:var(--sheet);padding:12px 14px}.form input:focus{border-color:var(--ink);box-shadow:0 0 0 3px var(--ink-soft);outline:none}.notice{border-radius:var(--r-md);background:var(--ink-soft);color:var(--ink-deep);margin-top:16px;padding:14px 16px;font-size:15px}.notice.error{background:var(--red-soft);color:var(--red-pen)}.plans{gap:12px;margin-top:32px;display:grid}.plan{border:1.5px solid var(--line);border-radius:var(--r-lg);background:var(--sheet);grid-template-columns:1fr auto;align-items:center;gap:4px 16px;padding:20px 22px;display:grid}.plan.best{border-color:var(--ink-deep);box-shadow:5px 5px 0 var(--ink-deep)}.plan h3{color:var(--ink-deep);font-size:20px}.plan .price{color:var(--ink);font-variant-numeric:tabular-nums;font-size:24px;font-weight:800}.plan .note{color:var(--ink-deep);background:var(--hl);border-radius:99px;width:fit-content;padding:1px 8px;font-size:13px;font-weight:700}.plan .price,.plan form{justify-self:end}.perks{gap:8px;margin:28px 0 0;padding:0;list-style:none;display:grid}.perks li:before{content:"✓";color:var(--tick);margin-right:10px;font-weight:800}.mic{cursor:pointer;background:var(--ink);color:#fff;border:0;border-radius:50%;place-items:center;width:88px;height:88px;margin:24px auto 0;display:grid}.mic.on{background:var(--red-pen);animation:1.2s ease-in-out infinite pulse}@keyframes pulse{50%{box-shadow:0 0 0 14px color-mix(in srgb, var(--red-pen) 18%, transparent)}}@media (prefers-reduced-motion:reduce){.mic.on{animation:none}}.heard{text-align:center;min-height:1.6em;margin-top:16px;font-size:18px}.study>*,.match>*{min-width:0}@media (max-width:480px){.tabs button{padding:10px 9px;font-size:14px}.controls .btn.review,.controls .btn.learned{flex:1}}.study-main{max-width:760px}.flashcard{min-height:380px}.face .term{font-size:clamp(30px,5vw,52px)}.swipe{touch-action:pan-y;-webkit-user-select:none;user-select:none}.card-controls{justify-content:center}.card-controls .btn.review,.card-controls .btn.learned{min-width:150px}.btn.cardnav{border-color:var(--line);width:52px;color:var(--ink-deep);padding:12px 0}.swipe-hint{text-align:center;margin-top:12px;font-size:13px}@media (max-width:480px){.card-controls{flex-wrap:nowrap;gap:8px}.card-controls .btn.review,.card-controls .btn.learned{flex:1;min-width:0;padding-inline:8px}.btn.cardnav{flex:none;width:46px}}.btn.google{background:var(--sheet);color:var(--text);border-color:var(--line)}.btn.google:hover{background:var(--ink-soft);color:var(--text)}.form .or{text-align:center;margin:6px 0 2px;font-size:14px}.admin{gap:20px;padding-block:32px 72px;display:grid}.admin-head{flex-wrap:wrap;justify-content:space-between;align-items:end;gap:16px;display:flex}.admin-head h1{color:var(--ink-deep);font-size:30px;font-weight:800}.demo-pill{color:#3d2c00;background:var(--writing);border-radius:99px;padding:4px 12px;font-size:13px;font-weight:700}.kpis{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;display:grid}.kpis>div{background:var(--sheet);border:1.5px solid var(--line);border-radius:14px;gap:2px;padding:16px 18px;display:grid}.kpis span{color:var(--muted);font-size:14px}.kpis b{color:var(--ink-deep);font-variant-numeric:tabular-nums;font-size:28px}.kpis small{color:var(--muted);font-size:13px}.admin-grid{grid-template-columns:1.2fr 1fr;gap:20px;display:grid}.admin-grid>*{min-width:0}.panel{background:var(--sheet);border:1.5px solid var(--line);border-radius:16px;min-width:0;padding:20px}.panel h2{color:var(--ink-deep);font-size:18px}.panel .small,.admin .small{margin-top:4px;font-size:13px}.panel-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.bars{border-bottom:1px solid var(--line);grid-template-columns:repeat(14,minmax(0,1fr));align-items:end;gap:6px;height:200px;margin-top:16px;display:grid}.bar-col{flex-direction:column;justify-content:flex-end;align-items:center;gap:4px;height:100%;display:flex}.bar{background:var(--ink);border-radius:4px 4px 0 0;width:100%;max-width:26px;min-height:2px}.bar-val{color:var(--muted);font-variant-numeric:tabular-nums;font-size:11px}.bar-day{color:var(--muted);white-space:nowrap;font-size:11px;transform:translateY(18px)}.topic-rows{gap:8px;margin-top:14px;display:grid}.topic-row{grid-template-columns:minmax(0,1.4fr) 1fr auto;align-items:center;gap:10px;font-size:14px;display:grid}.tname{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.tbar{background:var(--ink-soft);border-radius:99px;height:8px;display:flex;overflow:hidden}.tbar i{height:100%;display:block}.tnum{color:var(--muted);font-variant-numeric:tabular-nums;font-size:13px}.legend{align-items:center;display:flex}.filters{flex-wrap:wrap;gap:8px;display:flex}.filters input,.filters select{font:inherit;border:1.5px solid var(--line);border-radius:var(--r-md);background:var(--sheet);min-width:0;padding:8px 12px;font-size:14px}.table-scroll{overflow-x:auto}.admin-table{border-collapse:collapse;width:100%;min-width:760px;font-size:14px}.admin-table th{text-align:left;color:var(--muted);border-bottom:1.5px solid var(--line);white-space:nowrap;padding:8px 10px;font-weight:600}.admin-table td{border-bottom:1px solid var(--line);vertical-align:middle;padding:10px}.admin-table .num{text-align:right;font-variant-numeric:tabular-nums}.row-actions{flex-wrap:wrap;gap:6px;display:flex}.row-actions .btn.small{padding:6px 10px;font-size:13px}.btn.danger{color:var(--red-pen);border-color:var(--red-pen)}.chip-ok{color:var(--tick);background:var(--tick-soft);white-space:nowrap;border-radius:99px;padding:2px 8px;font-size:12px;font-weight:700}.chip-wait{color:#7a5200;background:#fff1cc;border-radius:99px;padding:2px 8px;font-size:12px;font-weight:700}@media (max-width:900px){.kpis{grid-template-columns:1fr 1fr}.admin-grid{grid-template-columns:1fr}}.plan-group{margin-top:44px;scroll-margin-top:88px}.plan-group h2{color:var(--ink-deep);font-size:24px;font-weight:800}.plan-group .plans{margin-top:20px}.admin-top{border-bottom:1.5px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.admin-tabs{gap:4px;display:flex;overflow-x:auto}.admin-tabs a{color:var(--muted);white-space:nowrap;border-bottom:3px solid #0000;margin-bottom:-1.5px;padding:10px 14px;font-size:15px;font-weight:600;text-decoration:none}.admin-tabs a[aria-current=page]{color:var(--ink-deep);border-bottom-color:var(--ink)}.role-pill{padding-bottom:8px}.owner-rev{background:var(--ink-deep);color:#fff;border-radius:12px;flex-wrap:wrap;align-items:baseline;gap:8px 20px;padding:12px 16px;font-size:15px;display:flex}.owner-rev .muted{color:#c9cff0}.role-form{gap:10px;margin-top:12px;display:grid}.role-form label{font-size:14px;font-weight:600}.role-form input[type=email]{font:inherit;border:1.5px solid var(--line);border-radius:var(--r-md);padding:10px 12px}.role-form fieldset{border:0;flex-wrap:wrap;gap:18px;margin:0;padding:0;display:flex}.role-form legend{margin-bottom:6px;font-size:14px;font-weight:600}.role-form fieldset label{align-items:center;gap:6px;font-weight:500;display:flex}.role-form .btn{justify-self:start}.owner-list{gap:8px;margin:12px 0 0;padding:0;list-style:none;display:grid}.owner-list li{align-items:center;gap:10px;font-weight:600;display:flex}.eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--speaking);margin-bottom:12px;font-size:14px;font-weight:700}.math-hero h1{max-width:14ch}.math-sample{background:var(--sheet);border:1.5px solid var(--ink-deep);border-radius:var(--r-lg);box-shadow:8px 8px 0 var(--ink-deep);gap:10px;padding:28px;display:grid}.math-sample .q-en{font-size:22px}.sample-ans{color:var(--tick);border-top:1px dashed var(--line);align-items:baseline;gap:12px;padding-top:12px;font-size:28px;font-weight:800;display:flex}.sample-ans span{color:var(--muted);font-size:14px;font-weight:500}.grade-grid{grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;display:grid}.grade-card{--accent:var(--ink);border:1.5px solid var(--line);border-top:8px solid var(--accent);border-radius:var(--r-lg);background:var(--sheet);min-height:180px;color:var(--text);align-content:start;gap:8px;padding:20px;text-decoration:none;transition:transform .12s,box-shadow .12s;display:grid}.grade-card:hover{box-shadow:4px 4px 0 var(--ink-deep);color:var(--text);transform:translateY(-2px)}.g-num{color:var(--ink-deep);font-size:26px;font-weight:800}.g-blurb{color:var(--muted);font-size:15px}.g-meta{color:var(--ink);margin-top:auto;font-size:13px;font-weight:600}@media (max-width:960px){.grade-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:420px){.grade-grid{grid-template-columns:1fr}.grade-card{min-height:0}}.modes.three{grid-template-columns:repeat(3,1fr)}@media (max-width:860px){.modes.three{grid-template-columns:1fr}.modes.three>div+div{border-left:0;border-top:1px solid var(--line);padding-left:0}}.grade-page{padding-block:40px 72px}.grade-page h1{color:var(--ink-deep);font-size:clamp(32px,4vw,44px);font-weight:800}.unit-toc .done{color:var(--tick);font-weight:700}.grade-nav{flex-wrap:wrap;gap:8px;margin-top:32px;display:flex}.grade-nav a{border:1.5px solid var(--line);background:var(--sheet);border-radius:99px;padding:8px 14px;font-size:14px;font-weight:600;text-decoration:none}.grade-nav a[aria-current=page]{border-color:var(--ink);background:var(--ink);color:#fff}.math-stats{grid-template-columns:auto 1fr;gap:6px 12px;margin:20px 0 0;font-size:14px;display:grid}.math-stats dt{color:var(--muted)}.math-stats dd{text-align:right;margin:0;font-weight:600}.vi-toggle{cursor:pointer;align-items:center;gap:8px;margin-top:18px;font-size:14px;font-weight:600;display:flex}.vi-toggle input{width:18px;height:18px;accent-color:var(--ink)}.dots-progress{gap:6px;margin-bottom:14px;display:flex}.dots-progress span{background:var(--ink-soft);border-radius:99px;flex:1;height:8px}.dots-progress .cur{background:var(--ink)}.dots-progress .ok{background:var(--tick)}.dots-progress .no{background:var(--red-pen)}.math-q .q-head{justify-content:space-between;align-items:center;display:flex}.q-en{color:var(--ink-deep);margin-top:8px;font-size:clamp(20px,2.6vw,26px);font-weight:700;line-height:1.35}.q-vi{color:var(--muted);border-left:3px solid var(--hl);margin-top:8px;padding-left:12px;font-size:16px}.link-btn{font:inherit;color:var(--ink);cursor:pointer;text-underline-offset:3px;background:0 0;border:0;margin-top:8px;padding:0;font-size:14px;text-decoration:underline}.q-visual{justify-content:center;margin-top:18px;display:flex}.mv{max-width:100%;height:auto}.answer-row{flex-wrap:wrap;align-items:end;gap:12px;margin-top:8px;display:flex}.answer-row .write-input{flex:180px;min-width:0}.answer-row .unit{color:var(--muted);padding-bottom:12px;font-size:20px;font-weight:700}.explain{border-radius:var(--r-md);gap:4px;margin-top:16px;padding:14px 16px;font-size:15px;display:grid}.explain.ok{background:var(--tick-soft)}.explain.no{background:var(--red-soft)}.explain .verdict{font-size:17px;font-weight:700}.explain.ok .verdict{color:var(--tick)}.explain.no .verdict{color:var(--red-pen)}.round-end{text-align:center;justify-items:center;gap:8px;padding-block:40px;display:grid}.big-score{color:var(--ink-deep);font-size:64px;font-weight:800;line-height:1}.stars{color:var(--writing);letter-spacing:4px;font-size:34px}.stars span{color:var(--line)}.vocab-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:0;padding:0;list-style:none;display:grid}.vocab-list li{background:var(--sheet);border:1.5px solid var(--line);border-radius:var(--r-lg);gap:4px;padding:16px 18px;display:grid}.v-top{justify-content:space-between;align-items:center;gap:8px;display:flex}.v-term{color:var(--ink-deep);font-size:21px;font-weight:800}.v-vi{font-weight:600}.v-ex{color:var(--muted);font-size:15px;font-style:italic}@media (max-width:560px){.vocab-list{grid-template-columns:1fr}}.band.math-band{background:var(--speaking);color:#3a1405}.band.math-band p{color:#5a2410}.band.math-band .btn{background:var(--ink-deep);color:#fff;border-color:var(--ink-deep)}.nav a,.nav .btn{white-space:nowrap}@media (max-width:520px){.site-header .wrap{gap:12px}.logo{gap:8px;font-size:19px}.nav{gap:14px;font-size:14px}.nav .btn.small{padding:7px 10px;font-size:13px}}@media (max-width:440px){.logo>span:last-child{display:none}.nav{gap:12px}}.speak-home{padding-block:40px 72px}.speak-home h1{color:var(--ink-deep);font-size:clamp(30px,4vw,46px);font-weight:800}.sub-h{color:var(--ink-deep);margin:28px 0 14px;font-size:22px}.lesson-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;display:grid}.lesson-card{border:1.5px solid var(--line);border-radius:var(--r-lg);background:var(--sheet);color:var(--text);align-content:start;gap:4px;min-height:150px;padding:18px;text-decoration:none;transition:transform .12s,box-shadow .12s;display:grid}.lesson-card:hover{box-shadow:4px 4px 0 var(--ink-deep);color:var(--text);transform:translateY(-2px)}.lc-num{color:var(--speaking);font-weight:800}.lc-name{color:var(--ink-deep);font-size:19px;font-weight:800}.lc-en{color:var(--muted);font-size:14px}.lc-meta{color:var(--ink);gap:8px;margin-top:auto;font-size:13px;font-weight:600;display:flex}@media (max-width:900px){.lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}.speak{max-width:1100px;padding-block:28px 64px}.speak-head h1{color:var(--ink-deep);margin-top:6px;font-size:clamp(26px,3vw,34px);font-weight:800}.speak-head .small{font-weight:600;text-decoration:none}.speak-panel{background:var(--sheet);border:1.5px solid var(--line);border-radius:22px;margin-top:18px;padding:20px;box-shadow:0 10px 30px -18px #17255459}.speak-bar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;display:flex}.seg2{gap:6px;display:flex}.seg2 button,.chip{font:inherit;border:1.5px solid var(--line);background:var(--sheet);color:var(--text);cursor:pointer;white-space:nowrap;border-radius:99px;padding:7px 14px;font-size:14px;font-weight:600}.seg2 button[aria-pressed=true],.chip[aria-pressed=true]{color:#4b2fd6;background:#f1edff;border-color:#7c5cff}.chip.static{cursor:default}.chip.avg{background:var(--tick-soft);color:var(--tick);border-color:#0000;font-weight:800}.speak-tools{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.voice{font:inherit;border:1.5px solid var(--line);background:var(--sheet);border-radius:10px;max-width:230px;padding:7px 10px;font-size:14px}.legend-row{flex-wrap:wrap;align-items:center;gap:8px;margin-top:12px;font-size:13px;display:flex}.legend-row>span:not(.muted){background:var(--paper);border-radius:6px;padding:2px 8px}.legend-row .muted{font-style:italic}.lv2{color:var(--red-pen);font-weight:800}.lv1{color:var(--ink-deep);font-weight:800}.lv0{color:#8e94b5;font-weight:500}.speak-nav{color:#4b2fd6;justify-content:center;align-items:center;gap:14px;margin-top:14px;font-weight:700;display:flex}.speak-nav .nav-btn{width:52px;padding:10px 0}.speak-nav .btn:not(.ghost){background:#6d3df5;border-color:#6d3df5}.speak-nav .btn.ghost{border-color:var(--line);color:var(--ink-deep);background:var(--paper)}.stage{background:linear-gradient(#fffdf8,#fff9ef);border:2px solid #f5d9a8;border-radius:20px;margin-top:14px;padding:24px 22px 22px}.guess-hint{text-align:center;color:var(--muted);font-size:15px}.wave-box{padding-inline:8px;position:relative}.wave{pointer-events:none;position:absolute;inset:0;overflow:visible}.wave-words{flex-wrap:wrap;justify-content:center;gap:2px 14px;margin:0;display:flex;position:relative}.wave-words .w{font:inherit;color:inherit;background:0 0;border:0;flex-direction:column;align-items:center;padding-top:50px;display:inline-flex}.w-text{letter-spacing:-.01em;border-bottom:3px solid #0000;padding-bottom:2px;font-size:clamp(26px,4.2vw,44px);line-height:1.2}.w.lv2 .w-text{color:var(--red-pen);font-weight:800}.w.lv1 .w-text{color:var(--ink-deep);font-weight:800}.w.lv0 .w-text{color:#8e94b5;font-weight:500}.w.lvx .w-text{color:var(--ink-deep);font-weight:600}.w.term .w-text{background:linear-gradient(176deg, transparent 0 58%, var(--hl) 58% 92%, transparent 92%)}.w.hit .w-text{border-bottom-color:var(--tick)}.w.miss .w-text{border-bottom-color:var(--red-pen);border-bottom-style:dashed}.w.speaking .w-text{background:var(--hl);border-radius:6px}button.w{cursor:pointer}button.w .w-text{border:2px dashed #0000;border-radius:8px;padding:0 4px}button.w:hover .w-text{border-color:var(--line)}button.w.guessed .w-text{background:#f1edff;border-color:#7c5cff}.w.guessed:not(button) .w-text{outline-offset:2px;border-radius:6px;outline:2px dotted #7c5cff}.w-ipa{font-family:var(--font-ipa);color:var(--muted);min-height:1.2em;margin-top:2px;font-size:14px}.speak-vi{text-align:center;color:var(--muted);margin-top:18px;font-size:19px}.speak-actions{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:20px;display:flex}.pill-btn{font:inherit;color:#fff;cursor:pointer;border:0;border-radius:16px;padding:14px 24px;font-size:17px;font-weight:800;transition:transform 80ms,box-shadow 80ms}.pill-btn:active{transform:translateY(3px)}.pill-btn.blue{background:linear-gradient(#5b7cfa,#3e5ee8);box-shadow:0 5px #2a43b5}.pill-btn.green{background:linear-gradient(#3fbf8a,#23a06d);box-shadow:0 5px #17774f}.pill-btn.red{background:linear-gradient(#ef4f68,#d7263d);box-shadow:0 5px #9c1729}.pill-btn.red.on{animation:1.2s ease-in-out infinite pulse}.pill-btn.purple{background:linear-gradient(#8b6cff,#6d3df5);box-shadow:0 5px #4b25bf}.pill-btn:active{box-shadow:0 2px #00000040}.small-notice{font-size:14px}.score-card{background:var(--sheet);border:1.5px solid var(--line);border-radius:16px;align-items:center;gap:16px;margin-top:18px;padding:14px 18px;display:flex}.score-card p{margin:0 0 4px}.sc-title{color:var(--ink-deep);font-size:18px;font-weight:800}.ring{flex:none}.all-list ol{gap:8px;margin:16px 0 0;padding:0;list-style:none;display:grid}.all-list li{border:1.5px solid var(--line);border-radius:12px;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;padding:10px 12px;display:grid}.all-list li.now{border-color:var(--speaking);background:#fff6ef}.mini-sentence{margin:0;font-size:19px}.mini-sentence .lv0{font-weight:400}.speak-foot{text-align:center;margin-top:12px}@media (max-width:560px){.speak-panel{border-radius:18px;padding:14px}.stage{padding:16px 10px}.wave-words{gap:0 9px}.wave-words .w{padding-top:46px}.pill-btn{flex:auto;padding:12px 16px;font-size:15px}.legend-row .muted{display:none}.voice{max-width:100%}}.speak-link{margin-top:16px;font-size:15px;font-weight:600;display:inline-block}.grade-grid.nine{grid-template-columns:repeat(5,minmax(0,1fr))}@media (max-width:960px){.grade-grid.nine{grid-template-columns:repeat(2,minmax(0,1fr))}}.grade-page .section-head .btn{flex:none}.exam-page{max-width:820px;padding-block:32px 72px}.exam-setup{gap:14px;margin-top:16px;display:grid}.exam-setup h2{color:var(--ink-deep);font-size:28px}.exam-opts{flex-wrap:wrap;gap:18px;display:flex}.exam-opts label{gap:6px;font-size:14px;font-weight:600;display:grid}.exam-opts select{font:inherit;border-radius:var(--r-md);border:1.5px solid var(--line);background:var(--sheet);min-width:140px;padding:10px 12px}.exam{gap:14px;margin-top:16px;display:grid}.exam-bar{flex-wrap:wrap;align-items:center;gap:16px;display:flex}.timer-pill{background:var(--ink-deep);color:#fff;font-variant-numeric:tabular-nums;border-radius:99px;padding:6px 16px;font-size:20px;font-weight:800}.timer-pill.warn{background:var(--red-pen)}.qgrid{flex-wrap:wrap;gap:6px;display:flex}.qgrid button{border:1.5px solid var(--line);background:var(--sheet);width:40px;height:40px;font:inherit;cursor:pointer;color:var(--text);border-radius:10px;font-size:14px;font-weight:700}.qgrid button.done{background:var(--ink-soft);border-color:var(--ink)}.qgrid button.cur{outline:3px solid var(--hl);border-color:var(--ink-deep)}.option.picked{border-color:var(--ink);background:var(--ink-soft);font-weight:700}.confirm{flex-wrap:wrap;align-items:center;gap:8px;font-weight:600;display:flex}.topic-score{gap:6px;margin:0;padding:0;list-style:none;display:grid}.topic-score li{background:var(--sheet);border:1.5px solid var(--line);border-radius:12px;justify-content:space-between;gap:12px;padding:10px 14px;font-size:15px;display:flex}.topic-score .ok{color:var(--tick);font-weight:800}.topic-score .no{color:var(--red-pen);font-weight:800}.review{gap:8px;margin:0;padding:0;list-style:none;display:grid}.review li{border:1.5px solid var(--line);background:var(--sheet);border-radius:12px;overflow:hidden}.review li.no{border-left:6px solid var(--red-pen)}.review li.ok{border-left:6px solid var(--tick)}.rv-head{width:100%;font:inherit;text-align:left;cursor:pointer;color:var(--text);background:0 0;border:0;grid-template-columns:44px 1fr auto;align-items:start;gap:10px;padding:12px 14px;display:grid}.rv-n{color:var(--ink);font-weight:800}.rv-q{font-size:15px}.rv-mark{font-size:13px;font-weight:800}.review li.ok .rv-mark{color:var(--tick)}.review li.no .rv-mark{color:var(--red-pen)}.rv-body{gap:6px;padding:0 14px 14px 68px;font-size:15px;display:grid}.ladder{margin-top:8px}.ladder-top{background:var(--sheet);border:1.5px solid var(--line);border-radius:var(--r-lg);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:18px 20px;display:flex}.ladder-progress{flex:240px;gap:8px;display:grid}.ladder-progress p{color:var(--muted);margin:0;font-size:15px}.ladder-progress b{color:var(--ink-deep)}.lp-bar{background:var(--ink-soft);border-radius:99px;height:12px;overflow:hidden}.lp-bar span{background:var(--tick);border-radius:99px;height:100%;transition:width .3s;display:block}.ladder-free{margin-top:12px}.ladder-tiers{gap:28px;margin:24px 0 0;padding:0;list-style:none;display:grid}.tier{--accent:var(--listening)}.tier-2{--accent:var(--reading)}.tier-3{--accent:var(--speaking)}.summit{--accent:var(--writing)}.tier-head{gap:2px;margin-bottom:12px;display:grid}.tier-no{letter-spacing:.06em;text-transform:uppercase;color:var(--accent);font-size:13px;font-weight:800}.tier-head h2{color:var(--ink-deep);margin:0;font-size:24px}.tier-head p{color:var(--muted);margin:0;font-size:15px}.steps{border-left:4px solid var(--accent);gap:8px;margin:0;padding:0 0 0 22px;list-style:none;display:grid}.step>a,.step>.step-shut,.summit-card{border:1.5px solid var(--line);background:var(--sheet);color:var(--text);border-radius:14px;grid-template-columns:40px 1fr auto;align-items:center;gap:12px;padding:12px 14px;text-decoration:none;display:grid}.step>a:hover,.summit-card:hover{border-color:var(--ink-deep);box-shadow:3px 3px 0 var(--ink-deep);color:var(--text)}.st-n{background:var(--paper);border:2px solid var(--accent);width:40px;height:40px;color:var(--ink-deep);border-radius:50%;place-items:center;font-weight:800;display:grid}.st-txt{min-width:0;display:grid}.st-vi{color:var(--ink-deep);font-weight:700}.st-en{color:var(--muted);font-size:14px}.st-meta{color:var(--ink);font-size:14px;font-weight:700}.step.ok .st-n{background:var(--tick);border-color:var(--tick);color:#fff}.step.cur>a{border-color:var(--ink);box-shadow:0 0 0 3px var(--hl)}.step.cur .st-n{background:var(--accent);color:#fff}.step.shut .step-shut{opacity:.55;cursor:not-allowed}.summit-card{border-width:2px;border-color:var(--accent)}.summit-card .st-n{font-size:20px}@media (max-width:520px){.steps{padding-left:14px}.step>a,.step>.step-shut,.summit-card{grid-template-columns:34px 1fr auto;gap:10px;padding:10px 12px}.st-n{width:34px;height:34px;font-size:14px}.ladder-top .btn{text-align:center;width:100%}}.doors{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:28px;display:grid}.door{--accent:var(--ink);border:2px solid var(--line);border-top:10px solid var(--accent);border-radius:var(--r-lg);background:var(--sheet);color:var(--text);align-content:start;gap:12px;padding:28px;text-decoration:none;transition:transform .12s,box-shadow .12s;display:grid}.door:hover{box-shadow:5px 5px 0 var(--ink-deep);color:var(--text);transform:translateY(-3px)}.door .d-kicker{letter-spacing:.06em;text-transform:uppercase;color:var(--accent);font-size:13px;font-weight:800}.door h2{color:var(--ink-deep);margin:0;font-size:32px;line-height:1.15}.door p{color:var(--muted);margin:0}.door ul{gap:4px;margin:0;padding-left:18px;font-size:15px;display:grid}.door .btn{justify-self:start;margin-top:6px}.door-chips{flex-wrap:wrap;gap:6px;display:flex}.door-chips span{background:var(--ink-soft);color:var(--ink-deep);border-radius:99px;padding:4px 10px;font-size:13px;font-weight:700}@media (max-width:760px){.doors{grid-template-columns:1fr}.door{padding:22px}.door h2{font-size:26px}}.summit .tier-no{color:#9a6b00}.ladder-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.ladder-grid .grade-card{padding:0}.ladder-grid .grade-card:hover{box-shadow:none;transform:none}.g-main{color:var(--text);gap:8px;padding:20px 20px 10px;text-decoration:none;display:grid}.g-main:hover .g-num{color:var(--ink)}.g-actions{flex-wrap:wrap;gap:8px;margin-top:auto;padding:0 20px 20px;display:flex}@media (max-width:960px){.ladder-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:420px){.ladder-grid{grid-template-columns:1fr}}.home-doors h1{max-width:820px}.home-doors .lead{margin-top:10px}.qcard{background:var(--sheet);border:1.5px solid var(--line);border-radius:var(--r-lg);overflow:hidden}.qcard-head{border-bottom:1.5px solid var(--line);grid-template-columns:auto 1fr auto;align-items:center;gap:12px;padding:12px 18px;display:grid}.qc-back{color:var(--ink);white-space:nowrap;font-weight:700;text-decoration:none}.qc-title{text-align:center;color:var(--ink-deep);font-size:15px;font-weight:800}.qc-steps{gap:5px;margin:0;padding:0;list-style:none;display:flex}.qc-steps li{border:1.5px solid var(--line);width:28px;height:28px;color:var(--muted);border-radius:50%;place-items:center;font-size:12px;font-weight:700;display:grid}.qc-steps li.cur{border-color:var(--ink);color:var(--ink);box-shadow:0 0 0 2px var(--ink-soft)}.qc-steps li.ok{background:var(--tick);border-color:var(--tick);color:#fff}.qc-steps li.no{background:var(--red-pen);border-color:var(--red-pen);color:#fff}.qcard-body{border-left:2px solid #f2b8c0;gap:14px;margin-left:30px;padding:22px 26px 26px;display:grid}.qcard-body .q-en{margin:0;font-weight:600}.vw{font:inherit;color:var(--ink);cursor:pointer;border:0;border-bottom:2px dotted var(--ink);line-height:inherit;background:0 0;padding:0}.vw:hover,.vw.on{background:var(--ink-soft);border-radius:4px 4px 0 0}.q-tools{flex-wrap:wrap;gap:10px;display:flex}.tool-btn{font:inherit;border:1.5px solid var(--line);background:var(--sheet);color:var(--ink-deep);cursor:pointer;border-radius:12px;padding:10px 18px;font-size:15px;font-weight:700}.tool-btn:hover,.tool-btn[aria-pressed=true]{border-color:var(--ink);background:var(--ink-soft)}.qcard-body .q-vi{margin:0}.gloss{background:var(--ink-soft);border-radius:12px;flex-wrap:wrap;align-items:baseline;gap:4px 6px;margin:0;padding:12px 16px;font-size:16px;display:flex}.gloss .ipa{font-family:var(--font-ipa);color:var(--muted);font-size:14px}.speak-mini{cursor:pointer;background:0 0;border:0;padding:0 4px;font-size:15px}.qcard-body .q-visual{justify-content:flex-start;margin:4px 0}.abcd{flex-wrap:wrap;gap:10px;display:flex}.abcd .option{background:var(--paper);border-width:2px;min-width:84px;padding:12px 18px;font-size:18px}.abcd .option b{color:var(--muted);margin-right:2px;font-weight:700}.abcd .option.picked{border-color:var(--ink);background:var(--ink-soft)}.abcd .option.picked b,.abcd .option.correct b{color:var(--ink-deep)}.qcard-body .answer-row{margin:0}.qcard-body .write-input{margin-top:0}.q-actions{flex-wrap:wrap;gap:10px;display:flex}.hint-list{background:#fff8db;border-radius:12px;gap:6px;margin:0;padding:12px 16px 12px 34px;font-size:15px;display:grid}.qcard-body .explain{margin-top:0}@media (max-width:640px){.qcard-head{grid-template-columns:1fr auto;padding:10px 14px}.qc-title{text-align:right;font-size:14px}.qc-steps{flex-wrap:wrap;grid-column:1/-1;gap:4px}.qc-steps li{width:24px;height:24px;font-size:11px}.qcard-body{margin-left:12px;padding:16px 14px 20px}.abcd .option{flex:calc(50% - 10px)}}.math-q .q-tools{margin-top:12px}.math-q .abcd{margin-top:16px}.math-q .gloss{margin-top:10px}.gloss{display:block}.gloss .muted{display:inline}@media (max-width:860px){.math aside h1{font-size:24px}.math aside .math-stats,.math aside>p.muted:last-child{display:none}.math aside .vi-toggle{margin:8px 16px 0 0;font-size:14px;display:inline-flex}}.door{flex-direction:column;display:flex}.door>*+*{margin-top:12px}.door .btn{text-align:center;align-self:flex-start;min-width:220px;margin-top:auto}.door ul{margin-bottom:18px}@media (max-width:760px){.door .btn{align-self:stretch}}.ch-summary{background:var(--sheet);border:1.5px solid var(--line);border-radius:var(--r-lg);flex-wrap:wrap;align-items:center;gap:20px;margin-top:8px;padding:18px 20px;display:flex}.ch-summary p{margin:0}.ch-badges{gap:8px;display:flex}.ch-badges span{border:2px dashed var(--line);width:44px;height:44px;color:var(--muted);border-radius:50%;place-items:center;font-size:16px;font-weight:800;display:grid}.ch-badges span.on{border:2px solid var(--writing);background:#fff6d6;font-size:22px}.ch-ready{color:var(--tick);font-weight:700}.ch-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:20px 0 0;padding:0;list-style:none;display:grid}.ch-card{border:1.5px solid var(--line);border-top:6px solid var(--reading);border-radius:var(--r-lg);background:var(--sheet);min-height:150px;color:var(--text);gap:8px;padding:18px;text-decoration:none;display:grid}.ch-card:hover{border-color:var(--ink-deep);box-shadow:4px 4px 0 var(--ink-deep);color:var(--text)}.ch-card.won{border-top-color:var(--writing)}.ch-no{color:var(--ink-deep);font-size:20px;font-weight:800}.ch-topics{color:var(--muted);font-size:14px}.ch-meta{color:var(--ink);justify-content:space-between;align-items:center;margin-top:auto;font-size:14px;font-weight:600;display:flex}.ch-medal{font-size:22px}.ch-facts{flex-wrap:wrap;gap:10px;margin:0;padding:0;list-style:none;display:flex}.ch-facts li{background:var(--ink-soft);border-radius:99px;padding:8px 14px;font-size:15px}.ch-status{flex-wrap:wrap;gap:18px;font-size:15px;display:flex}.badge-on{color:#9a6b00;font-weight:800}.badge-off{color:var(--muted)}.badge-win{color:#9a6b00;font-size:22px;font-weight:800}.exam-setup h2{font-size:22px}@media (max-width:900px){.ch-list{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:520px){.ch-list{grid-template-columns:1fr}.ch-badges span{width:38px;height:38px}}.head-btns{flex-wrap:wrap;gap:8px;display:flex}.flash{background:var(--tick-soft);color:var(--tick);border-radius:12px;padding:10px 14px;font-weight:600}.seg-filters{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.seg-filters a{border:1.5px solid var(--line);background:var(--sheet);color:var(--text);white-space:nowrap;border-radius:99px;padding:7px 12px;font-size:14px;font-weight:600;text-decoration:none}.seg-filters a b{color:var(--muted);margin-left:2px;font-weight:700}.seg-filters a[aria-current=page]{background:var(--ink-deep);border-color:var(--ink-deep);color:#fff}.seg-filters a[aria-current=page] b{color:#c9cff0}.seg-sep{background:var(--line);width:1px;height:22px;margin:0 4px}.user-cell{color:var(--text);text-decoration:none;display:grid}.user-cell b{color:var(--ink-deep)}.user-cell:hover b{color:var(--ink);text-decoration:underline}.user-cell .muted{font-size:13px}.admin-table tr.locked td{background:#fff6f7}.chip-bad{color:var(--red-pen);background:var(--red-soft);white-space:nowrap;vertical-align:middle;border-radius:99px;padding:2px 8px;font-size:12px;font-weight:700}.plan-chips{gap:4px;display:inline-flex}.chip-ok.ielts{color:var(--ink);background:var(--ink-soft)}.pager{justify-content:space-between;align-items:center;margin-top:14px;display:flex}.user-head{flex-wrap:wrap;align-items:center;gap:16px;display:flex}.user-head h1{color:var(--ink-deep);flex-wrap:wrap;align-items:center;gap:10px;font-size:28px;display:flex}.user-head .demo-pill{margin-left:auto}.avatar{color:#fff;background:var(--ink);border-radius:50%;flex:none;place-items:center;width:56px;height:56px;font-size:24px;font-weight:800;display:grid}.verdict{border-left:6px solid var(--ink);background:var(--ink-soft);border-radius:14px;flex-wrap:wrap;align-items:baseline;gap:10px;padding:14px 18px;display:flex}.verdict b{font-size:17px}.v-good{border-color:var(--tick);background:var(--tick-soft)}.v-good b{color:var(--tick)}.v-help{border-color:var(--red-pen);background:var(--red-soft)}.v-help b{color:var(--red-pen)}.v-idle{border-color:var(--writing);background:#fff6d6}.v-idle b{color:#9a6b00}.v-new{border-color:var(--line);background:var(--paper)}.heat{gap:4px;margin-top:14px;display:flex}.heat-col{gap:4px;display:grid}.heat span,.heat-legend span{background:#eef1f8;border-radius:4px;width:18px;height:18px;display:inline-block}.heat .h1,.heat-legend .h1{background:#c7ecd9}.heat .h2,.heat-legend .h2{background:#7fd1a8}.heat .h3,.heat-legend .h3{background:#33a86c}.heat .h4,.heat-legend .h4{background:#1e7a4a}.heat-legend{align-items:center;gap:4px;margin-top:10px;display:flex}.heat-legend span{width:12px;height:12px}.ch-mini{grid-template-columns:repeat(6,minmax(0,1fr));gap:6px;margin-top:12px;display:grid}.ch-mini div{border:1.5px dashed var(--line);border-radius:10px;justify-items:center;gap:2px;padding:8px 4px;font-size:13px;display:grid}.ch-mini div span{color:var(--ink-deep);font-size:20px;font-weight:800}.ch-mini div small{color:var(--muted);font-size:11px}.ch-mini .tried{border-style:solid}.ch-mini .won{border:2px solid var(--writing);background:#fff6d6}.exam-list,.sw-list,.audit-list,.board-list{gap:6px;margin:12px 0 0;padding:0;list-style:none;display:grid}.exam-list li{border-bottom:1px solid var(--line);grid-template-columns:1fr auto auto;gap:12px;padding:6px 0;font-size:14px;display:grid}.exam-list .ok,.sw-list .ok,.txt-ok{color:var(--tick);font-weight:700}.exam-list .no,.sw-list .no,.txt-no,.board .no{color:var(--red-pen);font-weight:700}.ladder-row{grid-template-columns:130px 1fr;align-items:center;gap:12px;margin-top:10px;display:grid}.lr-name{color:var(--ink-deep);font-size:14px;font-weight:700}.lr-steps{flex-wrap:wrap;gap:4px;display:flex}.st{color:#fff;cursor:default;border-radius:8px;place-items:center;width:30px;height:30px;font-size:11px;font-weight:700;display:grid}.st.pass,.step-legend .pass{background:var(--tick)}.st.mid,.step-legend .mid{background:#f0b429}.st.low,.step-legend .low{background:var(--red-pen)}.st.none,.step-legend .none{background:#e6e9f2}.step-legend{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.step-legend i{border-radius:3px;width:12px;height:12px;margin-left:6px;display:inline-block}.sw-list li{border-bottom:1px solid var(--line);grid-template-columns:1fr auto auto;align-items:baseline;gap:10px;padding:6px 0;font-size:14px;display:grid}.sw-list small{color:var(--muted)}.edit-form{gap:10px;margin-top:12px;display:grid}.edit-form label{gap:4px;font-size:14px;font-weight:600;display:grid}.edit-form input,.edit-form select,.edit-form textarea{font:inherit;border:1.5px solid var(--line);border-radius:var(--r-md);background:var(--sheet);padding:9px 12px;font-size:15px;font-weight:400}.edit-form .btn{justify-self:start}.plan-box{border-bottom:1px solid var(--line);gap:8px;padding:12px 0;display:grid}.plan-box:last-child{border-bottom:0}.inline-days{gap:6px;display:flex}.inline-days input{width:96px;font:inherit;border:1.5px solid var(--line);border-radius:var(--r-md);padding:6px 10px;font-size:14px}.audit-list li{border-bottom:1px solid var(--line);gap:2px;padding:8px 0;font-size:14px;display:grid}.danger-zone{border-color:#f3c2c9}.danger-zone h2{color:var(--red-pen)}.del-box{border-top:1px solid var(--line);margin-top:16px;padding-top:12px}.del-box summary{cursor:pointer;color:var(--red-pen);font-weight:700}.btn.danger-solid{background:var(--red-pen);border-color:var(--red-pen);color:#fff}.board-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;display:grid}.board-list li a{color:var(--text);counter-increment:b;border-radius:10px;justify-content:space-between;align-items:center;gap:12px;padding:8px 10px;text-decoration:none;display:flex}.board-list li a:hover{background:var(--paper)}.bl-name{min-width:0;display:grid}.bl-name b{color:var(--ink-deep);white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.bl-metric{white-space:nowrap;justify-items:end;font-size:15px;display:grid}.bl-metric small{color:var(--muted);font-size:12px}.board{border-top-width:6px}.b-good{border-top-color:var(--tick)}.b-ok{border-top-color:var(--speaking)}.b-badge{border-top-color:var(--writing)}.b-help{border-top-color:var(--red-pen)}@media (max-width:900px){.board-grid{grid-template-columns:1fr}.ladder-row{grid-template-columns:1fr;gap:4px}}@media (max-width:520px){.heat span{width:14px;height:14px}.heat,.heat-col{gap:3px}.ch-mini{grid-template-columns:repeat(3,minmax(0,1fr))}}.admin>*{min-width:0}.admin-tabs{flex:auto;min-width:0;max-width:100%}.foot-links{flex-wrap:wrap;align-items:center;gap:18px;display:flex}.fb-link{color:#1877f2;align-items:center;gap:6px;font-weight:600;text-decoration:none;display:inline-flex}.fb-link:hover{text-decoration:underline}.fb-band{border:1.5px solid var(--line);border-radius:var(--r-lg);background:var(--sheet);color:var(--text);align-items:center;gap:14px;margin-top:20px;padding:16px 20px;text-decoration:none;display:flex}.fb-band:hover{color:var(--text);border-color:#1877f2}.fb-band>span:nth-child(2){flex:1;display:grid}.fb-band small{color:var(--muted);font-size:14px}.fb-ico{color:#fff;background:#1877f2;border-radius:50%;flex:none;place-items:center;width:44px;height:44px;display:grid}.fb-ico svg{width:24px;height:24px}.fb-band .btn{background:#1877f2;border-color:#1877f2}@media (max-width:520px){.fb-band{flex-wrap:wrap}.fb-band .btn{text-align:center;width:100%}}.legal{padding-block:40px 72px}.legal h1{color:var(--ink-deep);font-size:34px}.legal h2{color:var(--ink-deep);margin-top:28px;font-size:20px}.legal p,.legal li{line-height:1.65}.legal ul{gap:6px;padding-left:20px;display:grid}.nav a.nav-fb{color:#1877f2;align-items:center;gap:6px;font-weight:600;display:inline-flex}.nav a.nav-fb:hover{color:#0f5ec7}@media (max-width:720px){.nav a.nav-fb span{display:none}}