/* HT Deutsch · Từ vựng Ausbildung theo ngành (dùng chung token của vt.css + pages.css) */
:root{
 --t-pfl:#3FD3C0;--t-koc:#FF8A5C;--t-hot:#9D8CFF;--t-res:#FF6F9F;--t-kfz:#6EB4FF;--t-ele:#FFC94D;--t-fis:#8C9BFF;--t-ein:#9BE36A;--t-lag:#D9A877;
 --lv-A1:#5EEAD4;--lv-A2:#5EEAD4;--lv-B1:#9D8CFF;--lv-B2:#FF7AA8;
 --glass:linear-gradient(170deg,rgba(20,28,60,.92),rgba(11,16,39,.92));
}
.au-wrap{width:min(1120px,calc(100% - 32px));margin:0 auto}
.au-page{padding:8px 0 30px}
.au-loading,.au-empty{padding:36px;text-align:center;color:var(--ink3);border-radius:20px;border:1px dashed var(--line2);background:rgba(11,16,39,.55)}
.au-loading{border:0;background:none}

/* trọng âm theo quy ước sách HT Deutsch: gạch dưới = nhấn dài, chấm dưới = nhấn ngắn */
.st{position:relative}
.st.lg{text-decoration:underline;text-decoration-color:var(--pink);text-decoration-thickness:3px;text-underline-offset:5px;text-decoration-skip-ink:none}
.st.sh:after{content:"";position:absolute;left:50%;bottom:-.3em;width:.2em;height:.2em;min-width:5px;min-height:5px;transform:translateX(-50%);border-radius:50%;background:var(--pink)}
.art{font-weight:900}
.art-der{color:var(--der)}.art-die{color:var(--die)}.art-das{color:var(--das)}

/* ===== hero ===== */
.au-hero{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;padding:46px 0 20px}
.au-hero h1{font-family:var(--f-d);font-weight:700;color:#fff;font-size:clamp(40px,6.4vw,70px);line-height:1.02;margin:12px 0 0;letter-spacing:-.02em}
.au-hero h1 em{font-style:normal;background:linear-gradient(90deg,#FFE3A6,var(--gold) 40%,#FF8A5C);-webkit-background-clip:text;background-clip:text;color:transparent}
.au-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:26px}
.au-stats div{padding:14px 16px;border-radius:18px;background:rgba(16,24,47,.85);border:1px solid var(--line)}
.au-stats b{display:block;font-family:var(--f-d);color:#fff;font-size:28px;line-height:1.1;font-variant-numeric:tabular-nums}
.au-stats small{color:var(--ink3);font-size:12.5px}
.au-spec{position:relative;padding:24px 24px 20px;border-radius:28px;border:1px solid rgba(255,179,71,.35);background:radial-gradient(130% 120% at 100% 0%,rgba(255,179,71,.22),transparent 60%),var(--glass);box-shadow:0 30px 80px -30px rgba(255,179,71,.45)}
.au-spec:before{content:"";position:absolute;left:24px;right:24px;top:0;height:4px;border-radius:0 0 6px 6px;background:var(--gold)}
.au-spec small{display:block;color:var(--ink3);font-weight:800;letter-spacing:.14em;font-size:11.5px}
.au-spec .sw{font-weight:900;color:#fff;font-size:clamp(26px,3.6vw,34px);line-height:1.25;margin:12px 0 2px;overflow-wrap:anywhere}
.au-spec .sm{color:var(--ink3);font-size:14.5px}
.au-spec ul{list-style:none;margin:16px 0 0;padding:14px 0 0;border-top:1px solid rgba(150,170,255,.15);display:grid;gap:10px;font-size:14px}
.au-spec li{display:grid;grid-template-columns:96px 1fr;gap:10px;align-items:baseline}
.au-spec li b{font-size:11px;letter-spacing:.1em;color:var(--ink3)}
.au-spec .k{font-weight:900;color:#fff;font-size:16px}

/* ===== lưới ngành ===== */
.au-fields{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.au-f{--c:#5EEAD4;position:relative;display:flex;flex-direction:column;gap:12px;padding:20px 20px 18px;border-radius:24px;border:1px solid rgba(255,255,255,.08);background:radial-gradient(120% 100% at 100% 0%,color-mix(in srgb,var(--c) 20%,transparent),transparent 60%),var(--glass);text-decoration:none;color:var(--ink2);overflow:hidden;transition:transform .18s,border-color .18s,box-shadow .2s}
.au-f:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--c) 55%,transparent);box-shadow:0 24px 60px -26px var(--c);color:var(--ink2)}
.au-f .tab{position:absolute;top:0;right:18px;padding:5px 9px 6px;border-radius:0 0 8px 8px;background:var(--c);color:#05060f;font-size:11px;font-weight:900;letter-spacing:.12em}
.au-f .orb{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle at 32% 30%,#fff,var(--c) 42%,color-mix(in srgb,var(--c) 30%,#05060f));box-shadow:0 0 28px color-mix(in srgb,var(--c) 60%,transparent)}
.au-f .orb svg,.au-head .orb svg{width:24px;height:24px;stroke:#05060f;stroke-width:2}
.au-f .ghost{position:absolute;right:-18px;bottom:-24px;width:130px;height:130px;opacity:.09;pointer-events:none}
.au-f .ghost svg{width:100%;height:100%;stroke:var(--c);stroke-width:1.2}
.au-f h3{margin:0;font-family:var(--f-d);color:#fff;font-size:23px;line-height:1.15}
.au-f .de{font-style:italic;color:var(--ink3);font-size:13.5px;line-height:1.35;min-height:2.7em;margin-top:3px}
.au-f .row{display:flex;justify-content:space-between;align-items:baseline;font-size:12.5px;color:var(--ink3);margin-top:auto;font-variant-numeric:tabular-nums}
.au-f .row b{font-family:var(--f-d);color:#fff;font-size:18px}
.au-f.soon{border-style:dashed;border-color:var(--line2);background:rgba(11,16,39,.45);cursor:default}
.au-f.soon:hover{transform:none;box-shadow:none}
.au-f.soon .orb{background:rgba(255,255,255,.06);box-shadow:none}
.au-f.soon .orb svg{stroke:var(--ink3)}
.au-f.soon .tab{background:var(--line2);color:var(--ink3)}
.lvbar{display:flex;height:6px;gap:2px;border-radius:4px;overflow:hidden;background:rgba(255,255,255,.06)}
.lvbar i{display:block;height:100%;border-radius:2px}
.lv-A1{background:var(--lv-A1)}.lv-A2{background:var(--lv-A2)}.lv-B1{background:var(--lv-B1)}.lv-B2{background:var(--lv-B2)}
.prog{height:5px;border-radius:4px;background:rgba(255,255,255,.07);overflow:hidden}
.prog i{display:block;height:100%;border-radius:4px;background:var(--c,var(--gold))}
.lvkey{display:flex;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--ink3);align-items:center}
.lvkey span{display:inline-flex;align-items:center;gap:6px}
.lvkey i{width:10px;height:10px;border-radius:3px}
.au-how{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.au-how article{padding:22px;border-radius:22px;background:rgba(16,24,47,.85);border:1px solid var(--line)}
.au-how .ic{font-size:26px}
.au-how h3{margin:8px 0 6px;font-family:var(--f-d);color:#fff;font-size:20px}
.au-how p{margin:0;font-size:14.5px}

/* ===== trang ngành / chủ đề ===== */
.au-crumbs{display:flex;flex-wrap:wrap;gap:6px;font-size:13px;color:var(--ink3);margin:22px 0 16px}
.au-crumbs a{color:var(--ink3);text-decoration:none;border-bottom:1px solid var(--line2)}
.au-crumbs a:hover{color:#fff}
.au-head{--c:#5EEAD4;position:relative;display:flex;gap:20px;align-items:center;padding:26px;border-radius:28px;border:1px solid color-mix(in srgb,var(--c) 40%,transparent);background:radial-gradient(130% 120% at 100% 0%,color-mix(in srgb,var(--c) 26%,transparent),transparent 60%),var(--glass);box-shadow:0 30px 80px -34px color-mix(in srgb,var(--c) 60%,transparent);overflow:hidden}
.au-head .orb{width:72px;height:72px;flex:none;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle at 32% 30%,#fff,var(--c) 42%,color-mix(in srgb,var(--c) 30%,#05060f));box-shadow:0 0 40px color-mix(in srgb,var(--c) 60%,transparent)}
.au-head .orb svg{width:32px;height:32px}
.au-head .pp-kick{color:var(--c)}
.au-head h1{margin:6px 0 0;font-family:var(--f-d);font-weight:700;color:#fff;font-size:clamp(30px,4.6vw,48px);line-height:1.05;letter-spacing:-.01em}
.au-head .de{font-style:italic;color:var(--ink3);margin-top:4px}
.au-head .vn{color:var(--ink2);margin-top:4px;font-size:16.5px}
.au-facts{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.au-facts span{padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.06);font-size:13px;color:var(--ink2);font-variant-numeric:tabular-nums}
.au-facts b{color:#fff}
.au-tabs{display:flex;gap:4px;margin:20px 0 6px;padding:4px;border-radius:999px;background:rgba(5,8,22,.6);border:1px solid rgba(150,170,255,.16);width:max-content;max-width:100%;overflow-x:auto}
.au-tabs a{padding:9px 16px;border-radius:999px;text-decoration:none;color:var(--ink2);font-weight:800;font-size:14px;white-space:nowrap}
.au-tabs a:hover{color:#fff}
.au-tabs a[aria-current="page"]{background:var(--gold);color:#1a1204}
.au-topics{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:12px;margin-top:16px}
.au-t{--c:#5EEAD4;display:grid;grid-template-columns:48px 1fr;gap:14px;padding:16px;border-radius:20px;border:1px solid var(--line);background:rgba(16,24,47,.85);text-decoration:none;color:var(--ink2);transition:transform .15s,border-color .15s}
.au-t:hover{transform:translateY(-2px);border-color:color-mix(in srgb,var(--c) 55%,transparent);color:var(--ink2)}
.au-t .no{width:48px;height:48px;border-radius:14px;display:grid;place-items:center;background:color-mix(in srgb,var(--c) 16%,transparent);color:var(--c);font-family:var(--f-d);font-weight:700;font-size:20px;font-variant-numeric:tabular-nums}
.au-t h3{margin:0;color:#fff;font-size:16.5px;line-height:1.3}
.au-t .vn{color:var(--ink3);font-size:13.5px;margin:2px 0 10px}
.au-t .meta{display:flex;justify-content:space-between;font-size:12px;color:var(--ink3);margin-top:8px;font-variant-numeric:tabular-nums}

/* thanh chế độ dính trên cùng */
.au-modes{position:sticky;top:66px;z-index:20;margin:18px 0 14px;padding:4px;display:grid;grid-template-columns:repeat(3,1fr);gap:4px;border-radius:999px;background:rgba(7,11,25,.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(150,170,255,.16);max-width:520px}
.au-modes a{display:flex;align-items:center;justify-content:center;gap:6px;min-height:42px;border-radius:999px;color:var(--ink2);text-decoration:none;font-weight:800;font-size:14px}
.au-modes a:hover{color:#fff}
.au-modes a[aria-current="page"]{background:linear-gradient(90deg,var(--neon),#8FB6FF);color:#05060f}

.au-filters{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.au-chips{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.au-row2{display:flex;gap:10px;align-items:center}
.chip{min-height:36px;padding:0 14px;border-radius:999px;border:1px solid var(--line2);background:rgba(255,255,255,.04);color:var(--ink2);font:700 13px var(--f-b);cursor:pointer;white-space:nowrap}
.chip:hover{color:#fff;border-color:var(--ink3)}
.chip[aria-pressed="true"]{background:var(--gold);border-color:var(--gold);color:#1a1204}
.sep{width:1px;height:22px;background:var(--line2);flex:none}
.au-inp{flex:1 1 200px;max-width:360px;min-height:42px;padding:0 16px;border-radius:999px;border:1px solid var(--line2);background:rgba(5,8,22,.6);color:#fff;font:500 14.5px var(--f-b);min-width:0}
.au-inp::placeholder{color:var(--ink3)}
.au-inp:focus{outline:2px solid var(--neon);outline-offset:1px}
.count{margin-left:auto;color:var(--ink3);font-size:13px;font-variant-numeric:tabular-nums;white-space:nowrap}

/* mục từ */
.au-list{display:grid;gap:10px}
.au-e{display:grid;grid-template-columns:46px minmax(0,1fr) minmax(0,1.25fr) auto;gap:16px;padding:16px;border-radius:20px;border:1px solid var(--line);background:rgba(16,24,47,.88);align-items:start;transition:border-color .2s,background .2s}
.au-e.known{border-color:rgba(94,234,212,.45);background:linear-gradient(90deg,rgba(94,234,212,.12),rgba(16,24,47,.88) 45%)}
.au-e.flash{animation:auflash 1.8s ease}
@keyframes auflash{0%,45%{box-shadow:0 0 0 3px var(--gold)}100%{box-shadow:0 0 0 0 transparent}}
.say{width:44px;height:44px;border-radius:50%;border:0;background:radial-gradient(circle at 32% 30%,#fff,var(--neon) 45%,#2b6c8a);color:#05060f;cursor:pointer;display:grid;place-items:center;box-shadow:0 0 18px rgba(94,234,212,.35);transition:transform .12s}
.say:hover{transform:scale(1.06)}.say:active{transform:scale(.94)}
.say svg{width:16px;height:16px;fill:currentColor;stroke:none;margin-left:2px}
.say.sm{width:30px;height:30px;background:rgba(255,255,255,.08);color:#fff;box-shadow:none;flex:none}
.say.sm svg{width:11px;height:11px}
.w{font-weight:900;color:#fff;font-size:22px;line-height:1.4;overflow-wrap:anywhere}
.forms{color:var(--ink3);font-size:14px;margin-top:3px}
.forms i{font-style:normal;font-size:11px;font-weight:800;letter-spacing:.06em;margin-right:6px;color:var(--ink3)}
.forms span{color:var(--ink2)}
.tags{display:flex;gap:6px;flex-wrap:wrap;margin-top:8px}
.tag{padding:3px 9px;border-radius:999px;background:rgba(255,255,255,.07);color:var(--ink2);font-size:11.5px;font-weight:800}
.tag.lv{display:inline-flex;align-items:center;gap:6px;color:#fff}
.tag.lv:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--c)}
.mean{font-family:var(--f-d);font-weight:600;color:#fff;font-size:18.5px;line-height:1.3}
.ex{display:flex;gap:10px;align-items:flex-start;margin-top:10px;padding:11px 13px;border-radius:14px;background:rgba(5,8,22,.55);border:1px solid rgba(150,170,255,.1)}
.ex .t{flex:1;min-width:0;color:#fff;font-size:15px}
.exvn{color:var(--ink3);font-style:italic;font-size:13.5px;margin-top:2px}
mark{background:none;color:var(--gold2);font-weight:800}
.acts{display:flex;flex-direction:column;gap:8px}
.tg{width:40px;height:40px;border-radius:12px;border:1px solid var(--line2);background:rgba(255,255,255,.04);color:var(--ink3);cursor:pointer;display:grid;place-items:center;font-size:16px;transition:all .15s}
.tg svg{width:18px;height:18px;stroke-width:2.4}
.tg:hover{color:#fff;border-color:var(--ink3)}
.tg.kn[aria-pressed="true"]{background:var(--ok);border-color:var(--ok);color:#05060f}
.tg.rv[aria-pressed="true"]{background:rgba(94,234,212,.14);border-color:var(--neon);color:var(--neon)}

/* thẻ ghi nhớ */
.au-fc{max-width:640px;margin:0 auto}
.au-fc-top{display:flex;align-items:center;gap:12px;margin-bottom:12px;color:var(--ink3);font-weight:800;font-size:13px;font-variant-numeric:tabular-nums}
.au-bar{flex:1;height:8px;border-radius:9px;background:rgba(255,255,255,.08);overflow:hidden}
.au-bar i{display:block;height:100%;border-radius:9px;background:linear-gradient(90deg,var(--neon),var(--pl));transition:width .35s}
.flip{perspective:1400px;cursor:pointer}
.flip-in{position:relative;display:grid;min-height:360px;transform-style:preserve-3d;transition:transform .55s cubic-bezier(.2,.7,.2,1)}
.flip.on .flip-in{transform:rotateY(180deg)}
.face{--kc:var(--neon);grid-area:1/1;position:relative;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:56px 26px 40px;border-radius:28px;border:1px solid rgba(150,170,255,.2);background:radial-gradient(120% 90% at 50% 0%,color-mix(in srgb,var(--kc) 16%,transparent),transparent 65%),linear-gradient(170deg,#161f45,#0c1230);box-shadow:0 30px 80px rgba(0,0,0,.5)}
.face:before{content:"";position:absolute;left:24px;right:24px;top:0;height:4px;border-radius:0 0 6px 6px;background:var(--kc)}
.face.back{transform:rotateY(180deg)}
.face .ftag{position:absolute;top:18px;left:20px;font-size:12px;font-weight:800;color:var(--ink3);letter-spacing:.08em;text-transform:uppercase}
.face .say{position:absolute;top:14px;right:14px}
.face .w{font-size:clamp(30px,7.6vw,48px);line-height:1.25}
.face .mean{font-size:clamp(24px,5.4vw,32px)}
.face .ex{max-width:480px;text-align:left}
.face .hint{position:absolute;bottom:14px;left:0;right:0;color:var(--ink3);font-size:13px}
.au-fc-btns{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:18px}
.au-kbd{text-align:center;color:var(--ink3);font-size:12px;margin-top:10px}

/* luyện tập */
.au-qz{max-width:680px;margin:0 auto}
.au-q{padding:26px 22px;border-radius:28px;border:1px solid rgba(150,170,255,.2);background:radial-gradient(120% 90% at 50% 0%,rgba(157,140,255,.14),transparent 65%),linear-gradient(170deg,#161f45,#0c1230);box-shadow:0 30px 80px rgba(0,0,0,.45)}
.qtype{display:inline-block;padding:5px 12px;border-radius:999px;background:rgba(94,234,212,.1);color:var(--neon);font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}
.qprompt{margin:16px 0 4px;color:#fff;font-weight:900;font-size:clamp(26px,6vw,36px);line-height:1.3;overflow-wrap:anywhere}
.qprompt.vi{font-family:var(--f-d);font-weight:600}
.qprompt.sent{font-weight:600;font-size:clamp(19px,4.6vw,24px);line-height:1.6}
.qsub{color:var(--ink3);font-size:14.5px}
.gap{display:inline-block;min-width:4.6em;border-bottom:3px solid var(--gold);margin:0 4px;transform:translateY(-5px)}
.opts{display:grid;gap:10px;margin-top:20px}
.opts.three{grid-template-columns:repeat(3,1fr)}
.opt{display:flex;align-items:center;gap:12px;min-height:56px;padding:12px 16px;border-radius:16px;border:1.5px solid var(--line2);background:rgba(255,255,255,.04);color:#fff;font:600 16px var(--f-b);text-align:left;cursor:pointer;transition:border-color .12s,background .12s,transform .1s}
.opt .k{display:grid;place-items:center;min-width:26px;height:26px;border-radius:8px;background:rgba(255,255,255,.08);color:var(--ink3);font-size:12px;font-weight:800;flex:none}
.opt.de{font-weight:800;font-size:17px}
.opts.three .opt{justify-content:center;font-size:24px;font-weight:900}
.opts.three .opt[data-a="der"]{color:var(--der)}.opts.three .opt[data-a="die"]{color:var(--die)}.opts.three .opt[data-a="das"]{color:var(--das)}
.opt:hover:not([disabled]){border-color:var(--neon);transform:translateY(-1px)}
.opt.right{border-color:var(--ok);background:rgba(94,234,212,.14)}
.opt.right .k{background:var(--ok);color:#05060f}
.opt.wrong{border-color:var(--bad);background:rgba(255,92,110,.12)}
.opt.wrong .k{background:var(--bad);color:#05060f}
.opt[disabled]{cursor:default}
.fb{margin-top:18px;padding:16px;border-radius:18px;background:rgba(5,8,22,.55);border:1px solid rgba(150,170,255,.14)}
.fb .res{font-weight:900;margin-bottom:6px}
.fb .res.ok{color:var(--ok)}.fb .res.bad{color:var(--bad)}
.score{text-align:center}
.score .big{font-family:var(--f-d);font-weight:700;color:#fff;font-size:clamp(64px,16vw,104px);line-height:1;text-shadow:0 0 50px rgba(94,234,212,.45)}
.score h2{font-family:var(--f-d);color:#fff;font-size:28px;margin:8px 0 4px}
.missed{display:grid;gap:8px;margin-top:20px;text-align:left}
.missed div{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;align-items:baseline;padding:10px 14px;border-radius:14px;background:rgba(5,8,22,.5);border:1px solid rgba(150,170,255,.1)}
.missed .w{font-size:18px}

/* mẫu câu */
.au-sits{display:grid;grid-template-columns:repeat(auto-fill,minmax(440px,1fr));gap:14px;align-items:start;margin-top:16px}
.au-sit{--c:#5EEAD4;border-radius:22px;border:1px solid var(--line);background:rgba(16,24,47,.88);overflow:hidden}
.au-sit summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:12px;align-items:center;padding:16px 18px}
.au-sit summary::-webkit-details-marker{display:none}
.au-sit summary h3{margin:0;color:#fff;font-size:17px}
.au-sit summary .vn{color:var(--ink3);font-size:13.5px}
.au-sit summary .n{padding:4px 10px;border-radius:999px;background:color-mix(in srgb,var(--c) 16%,transparent);color:var(--c);font-size:12px;font-weight:800;white-space:nowrap}
.au-sit[open] summary{border-bottom:1px solid var(--line)}
.ph{display:grid;grid-template-columns:30px 1fr;gap:12px;padding:12px 18px;border-top:1px solid rgba(150,170,255,.08)}
.ph:first-of-type{border-top:0}
.ph .de{color:#fff;font-weight:700;font-size:16px}
.ph .vn{color:var(--ink3);font-size:14px}

/* tra cứu */
.au-search{position:relative;margin:20px 0}
.au-search svg{position:absolute;left:18px;top:50%;transform:translateY(-50%);width:20px;height:20px;color:var(--ink3)}
.au-search input{width:100%;min-height:58px;padding:0 18px 0 50px;border-radius:999px;border:1px solid var(--line2);background:rgba(5,8,22,.7);color:#fff;font:500 17px var(--f-b)}
.au-search input:focus{outline:2px solid var(--neon);outline-offset:1px}
.au-res{display:grid;gap:8px}
.au-res a{--c:#5EEAD4;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr) auto;gap:14px;align-items:baseline;padding:13px 16px;border-radius:16px;border:1px solid var(--line);background:rgba(16,24,47,.88);text-decoration:none;color:var(--ink2)}
.au-res a:hover{border-color:var(--c);color:var(--ink2)}
.au-res .w{font-size:18px}
.au-res .where{color:var(--c);font-size:12px;font-weight:800;text-align:right}
.au-res .where span{display:block;color:var(--ink3);font-weight:500}

.au-toast{position:fixed;left:50%;top:84px;transform:translateX(-50%);z-index:80;padding:12px 18px;border-radius:14px;background:rgba(16,24,47,.97);border:1px solid rgba(94,234,212,.45);color:#fff;font:700 14.5px var(--f-b);box-shadow:0 14px 40px rgba(0,0,0,.5);max-width:calc(100vw - 32px)}

@media (max-width:860px){
 .au-hero{grid-template-columns:1fr;gap:26px;padding-top:28px}
 .au-stats{grid-template-columns:repeat(2,1fr)}
 .au-how{grid-template-columns:1fr}
 .au-e{grid-template-columns:42px minmax(0,1fr) auto;gap:12px}
 .au-e .c2{grid-column:1/-1}
 .au-e .acts{grid-row:1;grid-column:3;flex-direction:row}
 .au-chips{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;scrollbar-width:none}
 .au-chips .chip{flex:none}
 .au-modes{position:static;max-width:none}
 .au-sits{grid-template-columns:1fr}
 .au-head{flex-direction:column;align-items:flex-start;padding:22px}
 .au-head .orb{width:58px;height:58px}
}
@media (max-width:520px){
 .au-res a{grid-template-columns:1fr;gap:3px}
 .au-res .where{text-align:left}
 .au-spec li{grid-template-columns:82px 1fr}
}

/* học thử */
.au-trial{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:14px 0;padding:12px 14px 12px 18px;border-radius:18px;background:linear-gradient(90deg,rgba(255,179,71,.16),rgba(11,16,39,.7));border:1px solid rgba(255,179,71,.4);color:#fff;font-size:14.5px}
.au-t.locked{opacity:.62}.au-t.locked:hover{opacity:.9}
.au-t.locked .meta svg,.au-sit.locked svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:2;vertical-align:-2px}
.au-sit.locked{display:block;text-decoration:none;color:inherit;opacity:.62}
.au-sit.locked summary{list-style:none}
.au-lockbox{max-width:560px;margin:30px auto;padding:30px 22px;text-align:center;border-radius:26px;border:1px solid var(--line);background:rgba(16,22,52,.7)}
.au-lockbox .orb{display:inline-grid;place-items:center;width:64px;height:64px;border-radius:50%;background:color-mix(in srgb,var(--c) 22%,transparent);border:1px solid var(--c)}
.au-lockbox .orb svg{width:28px;height:28px;fill:none;stroke:#fff;stroke-width:2}
.au-lockbox h2{font-family:var(--f-d);color:#fff;font-size:26px;margin:14px 0 8px}
.au-lockbox p{color:var(--ink2);line-height:1.6}