:root{
  --bg:#f7fafc;--bg2:#eef4f7;--card:#ffffff;--fg:#0f1f2e;--muted:#526273;--line:#dde6ed;
  --brand:#0e7c86;--brand2:#14a3a8;--navy:#0b2540;--accent:#e8622a;--soft:#e2f3f3;--soft2:#fdeee6;
  --green:#178a5a;--violet:#5b4bd6;--rose:#c2416b;
  --shadow:0 18px 44px -22px rgba(11,37,64,.35);--radius:18px;--field:#f3f8fa;--field-line:#c9d8e2;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0b1520;--bg2:#0f1d2a;--card:#132332;--fg:#e8f0f5;--muted:#9fb1c0;--line:#22364a;
  --brand:#2fc1c6;--brand2:#5fd6d9;--navy:#081624;--accent:#ff8250;--soft:#123638;--soft2:#3a2219;
  --green:#4cc38a;--violet:#9d93ff;--rose:#ff7aa3;--shadow:0 18px 44px -22px rgba(0,0,0,.7);--field:#0f1d2a;--field-line:#2c4560;
}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font:16.5px/1.6 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:"Plus Jakarta Sans",Inter,system-ui,sans-serif;letter-spacing:-.02em;line-height:1.12;margin:0}
img{max-width:100%}

/* nav */
.top{background:var(--navy);color:#cfe3ea;font-size:13px}
.top .wrap{display:flex;gap:18px;justify-content:center;padding:7px 20px;text-align:center}
.top b{color:#fff}
nav{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;gap:26px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--fg);font-family:"Plus Jakarta Sans",Inter,sans-serif}
.brand:hover{text-decoration:none}
.logo{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,var(--brand),var(--brand2));position:relative;box-shadow:0 6px 16px -6px var(--brand)}
.logo::before,.logo::after{content:"";position:absolute;background:#fff;border-radius:2px}
.logo::before{left:14px;top:8px;width:4px;height:16px}
.logo::after{left:8px;top:14px;width:16px;height:4px}
.links{display:flex;gap:22px;margin-left:auto;font-size:15px;font-weight:500}
.links a{color:var(--muted)}
.links a:hover,.links a.on{color:var(--fg);text-decoration:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 18px;border-radius:12px;font-weight:600;font-size:15px;border:1px solid transparent;transition:transform .15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 22px -12px var(--brand)}
.btn-accent{background:var(--accent);color:#fff}
.btn-ghost{background:var(--card);border-color:var(--line);color:var(--fg)}
.login{color:var(--fg);font-weight:600;font-size:15px}
@media (max-width:900px){.links{display:none}.login{margin-left:auto}}
@media (max-width:480px){.login{display:none}nav .btn{margin-left:auto}}

/* hero */
.hero{padding:64px 0 46px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;right:-260px;top:-220px;width:720px;height:720px;background:radial-gradient(circle,var(--soft),transparent 64%);z-index:-1}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:54px;align-items:center}
@media (max-width:940px){.hero-grid{grid-template-columns:1fr}}
.pill{display:inline-flex;gap:8px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:99px;padding:5px 14px 5px 6px;font-size:13.5px;color:var(--muted);margin-bottom:20px}
.pill b{background:var(--soft2);color:var(--accent);border-radius:99px;padding:2px 9px;font-size:11.5px;letter-spacing:.05em}
h1{font-size:clamp(38px,5.6vw,62px);font-weight:800}
h1 span{background:linear-gradient(90deg,var(--brand),var(--brand2));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:19px;color:var(--muted);margin:20px 0 28px;max-width:36em}
.cta{display:flex;flex-wrap:wrap;gap:12px}
.ticks{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:24px;font-size:14px;color:var(--muted)}
.ticks span::before{content:"✓";color:var(--green);font-weight:800;margin-right:6px}

/* page header (inner pages) */
.phead{padding:56px 0 34px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,var(--soft),transparent)}
.phead h1{font-size:clamp(34px,4.8vw,52px)}
.phead p{color:var(--muted);font-size:18px;max-width:42em;margin:14px 0 0}
.crumb{font-size:13px;color:var(--muted);margin-bottom:14px}

/* sections */
section{padding:76px 0}
.alt{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{font-size:12.5px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--brand);margin-bottom:10px}
h2{font-size:clamp(28px,3.8vw,42px);font-weight:800;max-width:20em}
.sub{color:var(--muted);font-size:17.5px;max-width:42em;margin:14px 0 0}
.center{text-align:center}.center h2,.center .sub{margin-left:auto;margin-right:auto}

.grid{display:grid;gap:18px;margin-top:40px}
.g2{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(3,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
@media (max-width:980px){.g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.card h3{font-size:19px;margin:12px 0 8px}
.card p{margin:0;color:var(--muted);font-size:15px}
.ic{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;font-size:20px;background:var(--soft)}
.ic.o{background:var(--soft2)}.ic.v{background:color-mix(in srgb,var(--violet) 14%,transparent)}.ic.r{background:color-mix(in srgb,var(--rose) 14%,transparent)}
a.card{color:inherit;display:block;transition:transform .15s,box-shadow .15s}
a.card:hover{text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow)}
.more{display:inline-block;margin-top:14px;font-weight:600;font-size:14.5px;color:var(--brand)}

/* audience tiles */
.aud{border-radius:22px;padding:28px;color:#fff;position:relative;overflow:hidden;min-height:260px;display:flex;flex-direction:column}
.aud h3{font-size:24px;margin:14px 0 10px}
.aud p{opacity:.92;margin:0;font-size:15.5px}
.aud ul{margin:14px 0 18px;padding-left:18px;font-size:14.5px;opacity:.95}
.aud .go{margin-top:auto;font-weight:700}
.aud.a1{background:linear-gradient(140deg,#0b4f6c,#0e7c86)}
.aud.a2{background:linear-gradient(140deg,#7a2e5c,#c2416b)}
.aud.a3{background:linear-gradient(140deg,#2b2a6b,#5b4bd6)}
.aud.a4{background:linear-gradient(140deg,#8a3b12,#e8622a)}
a.aud:hover{text-decoration:none;transform:translateY(-2px)}

/* exam chips */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chip{font-size:13px;font-weight:600;padding:5px 11px;border-radius:99px;background:var(--bg2);border:1px solid var(--line);color:var(--fg)}
.region{display:flex;gap:10px;align-items:center}
.flag{font-size:24px}
.region h3{margin:0}
.region small{display:block;color:var(--muted);font-size:13px;font-weight:500}

/* mock app */
.app{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);overflow:hidden}
.app-top{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.app-top i{width:10px;height:10px;border-radius:50%;background:var(--line)}
.app-top .tagx{margin-left:auto;background:var(--soft);color:var(--brand);font-weight:700;border-radius:8px;padding:3px 9px;font-size:12px}
.q{padding:18px 18px 6px}
.q .meta{font-size:12px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap}
.q .meta b{color:var(--brand)}
.q p{margin:10px 0 12px;font-size:15px}
.opt{border:1px solid var(--line);border-radius:11px;padding:9px 13px;margin-bottom:8px;font-size:14.5px;display:flex;gap:10px}
.opt.ok{border-color:var(--green);background:color-mix(in srgb,var(--green) 9%,transparent)}
.opt.ok::after{content:"✓ 71% chose this";margin-left:auto;color:var(--green);font-size:12.5px;font-weight:700}
.opt.no{opacity:.7}
.tutor{margin:6px 18px 18px;border-radius:14px;background:var(--bg2);padding:13px 15px;font-size:14px;display:flex;gap:12px}
.tutor .av{flex:none;width:30px;height:30px;border-radius:9px;background:linear-gradient(135deg,var(--accent),#f2a36a);color:#fff;display:grid;place-items:center;font-weight:800;font-size:13px}
.tutor b{display:block;font-size:12px;color:var(--accent);letter-spacing:.04em;text-transform:uppercase}
.hero-wrap{position:relative;padding:8px 8px 34px}
.float{position:absolute;background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:11px 14px;font-size:13px}
.float b{display:block;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--green)}
.f1{right:-8px;top:-10px;transform:rotate(2deg)}
.f2{left:-14px;bottom:4px;transform:rotate(-2deg)}
.meter{height:6px;border-radius:6px;background:var(--line);margin-top:6px;width:150px;overflow:hidden}
.meter i{display:block;height:100%;width:68%;background:linear-gradient(90deg,var(--brand),var(--brand2))}
@media (max-width:520px){.f1,.f2{display:none}}

/* steps */
.steps{counter-reset:s}
.steps .card::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--soft);color:var(--brand);font-weight:800}

/* pricing */
.toggle{display:inline-flex;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:4px;margin-top:26px;flex-wrap:wrap}
.toggle a{padding:8px 16px;border-radius:9px;font-weight:600;font-size:14.5px;color:var(--muted)}
.toggle a.on{background:var(--brand);color:#fff}
.toggle a:hover{text-decoration:none}
.plans{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:30px;align-items:stretch}
.plans.p3{grid-template-columns:repeat(3,1fr)}
@media (max-width:1020px){.plans,.plans.p3{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.plans,.plans.p3{grid-template-columns:1fr}}
.plan{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:24px;display:flex;flex-direction:column;position:relative}
.plan.pop{border:2px solid var(--brand);box-shadow:var(--shadow)}
.badge{position:absolute;top:-12px;left:24px;background:var(--brand);color:#fff;font-size:11.5px;font-weight:800;border-radius:99px;padding:4px 11px;letter-spacing:.03em}
.plan h3{font-size:21px}
.pd{color:var(--muted);font-size:14px;margin:6px 0 16px;min-height:42px}
.price{font-family:"Plus Jakarta Sans",sans-serif;font-size:40px;font-weight:800;letter-spacing:-.03em}
.price small{font-family:Inter,sans-serif;font-size:14.5px;color:var(--muted);font-weight:500;margin-left:3px;letter-spacing:0}
.yr{font-size:13px;color:var(--green);font-weight:600;min-height:20px}
.plan ul{list-style:none;padding:0;margin:16px 0 22px;display:grid;gap:8px;font-size:14.5px;flex:1}
.plan li{display:flex;gap:8px}
.plan li::before{content:"✓";color:var(--green);font-weight:800}
.plan li.x{color:var(--muted)}
.plan li.x::before{content:"–";color:var(--muted)}
.note{color:var(--muted);font-size:13.5px;margin-top:20px;text-align:center}
.tierhead{display:flex;align-items:center;gap:12px;margin-top:64px}
.tierhead:first-of-type{margin-top:40px}
.tierhead h3{font-size:26px}
.tierhead .ic{width:46px;height:46px}

/* compare table */
.tbl{overflow-x:auto;margin-top:34px;border:1px solid var(--line);border-radius:16px;background:var(--card)}
table{border-collapse:collapse;width:100%;min-width:640px;font-size:14.5px}
th,td{padding:12px 16px;border-bottom:1px solid var(--line);text-align:left}
th{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
td.c,th.c{text-align:center}
tr:last-child td{border-bottom:0}
.y{color:var(--green);font-weight:800}.n{color:var(--muted)}

/* faq */
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{cursor:pointer;font-weight:650;font-size:16.5px;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--brand);font-size:22px;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq p{color:var(--muted);margin:10px 0 0}
.split{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px}
@media (max-width:900px){.split{grid-template-columns:1fr}}

/* band */
.band{background:linear-gradient(135deg,var(--navy),#0e4f63);color:#fff;border-radius:28px;padding:56px 28px;text-align:center;box-shadow:var(--shadow)}
.band h2{color:#fff;margin:0 auto}
.band p{opacity:.88;max-width:36em;margin:14px auto 26px;font-size:17.5px}
.band .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}

/* prose (legal) */
.prose{max-width:760px;padding:50px 0 80px}
.prose h2{font-size:24px;margin:34px 0 10px}
.prose p,.prose li{color:var(--muted)}
.prose strong{color:var(--fg)}

/* footer */
footer{background:var(--navy);color:#b7c9d6;padding:56px 0 30px;font-size:14px;margin-top:0}
footer .cols{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:28px}
@media (max-width:900px){footer .cols{grid-template-columns:1fr 1fr}}
footer h4{color:#fff;font-size:14px;margin-bottom:12px}
footer a{color:#b7c9d6;display:block;margin:6px 0}
footer .brand{color:#fff}
footer .fine{border-top:1px solid rgba(255,255,255,.12);margin-top:36px;padding-top:20px;font-size:12.5px;color:#8ea4b5;display:grid;gap:8px}

/* signup */
.signup{display:grid;grid-template-columns:.9fr 1.1fr;border-radius:26px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);max-width:980px;margin:0 auto}
@media (max-width:820px){.signup{grid-template-columns:1fr}}
.su-side{background:linear-gradient(150deg,var(--navy),#0e5f6b);color:#d7e9ef;padding:40px 34px}
.su-side p{margin:14px 0 18px;opacity:.9}
.su-side ul{list-style:none;padding:0;margin:0;display:grid;gap:10px;font-size:15px}
.su-side li::before{content:"✓";color:#7fe0e3;font-weight:800;margin-right:8px}
.su-form{background:var(--card);padding:36px 34px}
.su-form label{display:block;font-size:13.5px;font-weight:650;color:var(--fg);margin:16px 0 0;letter-spacing:.01em}
.su-form input,.su-form select,.su-form textarea{display:block;width:100%;margin-top:7px;padding:12px 14px;border-radius:12px;border:1.5px solid var(--field-line);background:var(--field);color:var(--fg);font:inherit;font-size:15px;box-shadow:0 1px 2px rgba(11,37,64,.06);transition:border-color .15s,box-shadow .15s,background .15s}
.su-form textarea{resize:vertical;min-height:130px}
.su-form input::placeholder,.su-form textarea::placeholder{color:var(--muted);opacity:.7}
.su-form input:hover,.su-form select:hover,.su-form textarea:hover{border-color:color-mix(in srgb,var(--brand) 45%,var(--field-line))}
.su-form input:focus,.su-form select:focus,.su-form textarea:focus{outline:none;border-color:var(--brand);background:var(--card);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand) 16%,transparent)}
.su-form select{appearance:none;-webkit-appearance:none;padding-right:40px;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%230e7c86' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 15px center}
.su-form .chk input{accent-color:var(--brand);width:18px;height:18px;box-shadow:none}
.su-form .btn{padding:14px 18px;font-size:16px;border-radius:12px}
.su-form .two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:480px){.su-form .two{grid-template-columns:1fr}}
.su-form .chk{display:flex;gap:10px;align-items:flex-start;font-weight:500;color:var(--muted);margin:18px 0 14px}
.su-form .chk input{width:auto;margin:3px 0 0}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.hint{color:var(--muted);font-size:14.5px}
.err{color:var(--rose);font-size:14px;margin:12px 0 0}
.si{margin-top:22px;padding-top:18px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}

/* facts strip */
.facts{padding:34px 0 30px;border-top:1px solid var(--line)}
.factgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media (max-width:760px){.factgrid{grid-template-columns:repeat(2,1fr)}}
.factgrid div{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px 20px}
.factgrid b{display:block;font-family:"Plus Jakarta Sans",sans-serif;font-size:32px;font-weight:800;color:var(--brand);letter-spacing:-.02em}
.factgrid span{color:var(--muted);font-size:14.5px}
.promises{display:flex;flex-wrap:wrap;gap:10px 22px;justify-content:center;margin-top:20px;font-size:14.5px;color:var(--muted)}
.promises span{white-space:nowrap}

/* mobile apps */
.mob{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
@media (max-width:860px){.mob{grid-template-columns:1fr}}
.stores{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.store{display:inline-flex;align-items:center;gap:11px;background:#0b1520;color:#fff;border-radius:13px;padding:10px 18px 10px 14px;border:1px solid #2a3a4a;min-width:190px;transition:transform .15s}
.store:hover{text-decoration:none;transform:translateY(-2px)}
.store span{display:flex;flex-direction:column;line-height:1.15;font-weight:700;font-size:18px;font-family:"Plus Jakarta Sans",Inter,sans-serif}
.store small{font-size:11px;font-weight:500;opacity:.8;font-family:Inter,sans-serif}
.phone{justify-self:center;width:270px;border-radius:40px;background:#0b1520;padding:12px;box-shadow:var(--shadow)}
.screen{border-radius:30px;background:var(--card);padding:22px 16px 18px;min-height:470px;display:flex;flex-direction:column;gap:14px}
.ph-top{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted)}
.ph-top b{font-size:20px;color:var(--fg);font-family:"Plus Jakarta Sans",sans-serif}
.ph-card{border:1px solid var(--line);border-radius:18px;padding:16px;background:var(--bg)}
.ph-card small{color:var(--brand);font-weight:800;font-size:10.5px;letter-spacing:.08em}
.ph-card p{margin:8px 0 12px;font-weight:650;font-size:15px}
.ph-ans{border-top:1px dashed var(--line);padding-top:10px;font-size:13.5px;color:var(--muted)}
.ph-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;font-size:12.5px;font-weight:700;text-align:center}
.ph-row span{border-radius:10px;padding:9px 0}
.r1{background:color-mix(in srgb,var(--rose) 14%,transparent);color:var(--rose)}
.r2{background:var(--soft);color:var(--brand)}
.r3{background:color-mix(in srgb,var(--green) 14%,transparent);color:var(--green)}
.ph-prog{margin-top:auto;font-size:12.5px;color:var(--muted)}
.ph-prog i{display:block;height:7px;border-radius:7px;background:var(--line);margin-top:6px;overflow:hidden}
.ph-prog em{display:block;height:100%;width:58%;background:linear-gradient(90deg,var(--brand),var(--brand2))}

/* google sign-in */
.gbtn{margin-top:18px;min-height:44px;display:flex;justify-content:center}
.gok{background:color-mix(in srgb,var(--green) 10%,transparent);color:var(--green);border-radius:11px;padding:10px 13px;font-size:14px;font-weight:600;margin:12px 0 0}
.or{display:flex;align-items:center;gap:12px;margin:18px 0 2px;color:var(--muted);font-size:13px}
.or::before,.or::after{content:"";flex:1;height:1px;background:var(--line)}

/* signed-in member */
.me{display:flex;align-items:center;gap:10px;padding:5px 14px 5px 5px;border:1px solid var(--line);border-radius:99px;background:var(--card);color:var(--fg)}
.me:hover{text-decoration:none;border-color:var(--brand)}
.me .av{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-weight:800;overflow:hidden}
.me .av img{width:100%;height:100%;object-fit:cover}
.me-t{display:flex;flex-direction:column;line-height:1.1}
.me-t b{font-size:14.5px}.me-t small{font-size:11.5px;color:var(--brand);font-weight:700}
@media (max-width:480px){.me-t{display:none}.me{padding:4px}}

/* account */
.acc{display:grid;grid-template-columns:1.25fr .75fr;gap:22px;align-items:start}
@media (max-width:900px){.acc{grid-template-columns:1fr}}
.hello{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.hello .av{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;font-size:26px;font-weight:800;overflow:hidden}
.hello .av img{width:100%;height:100%;object-fit:cover}
.tag{display:inline-block;background:var(--soft);color:var(--brand);font-weight:800;font-size:12px;letter-spacing:.04em;border-radius:99px;padding:4px 11px}
.tag.o{background:var(--soft2);color:var(--accent)}
.kv{display:grid;grid-template-columns:auto 1fr;gap:8px 16px;font-size:14.5px;margin-top:12px}
.kv dt{color:var(--muted)}.kv dd{margin:0;font-weight:600;word-break:break-word}
.qz .opt{cursor:pointer;transition:border-color .15s,background .15s}
.qz .opt:hover{border-color:var(--brand)}
.qz .opt.ok::after{content:"✓ Correct"}
.qz .opt.bad{border-color:var(--rose);background:color-mix(in srgb,var(--rose) 8%,transparent)}
.qz .why{display:none;margin-top:10px;background:var(--bg2);border-radius:12px;padding:12px 14px;font-size:14.5px}
.qz.done .why{display:block}
.qz.done .opt{pointer-events:none}
.qnav{display:flex;justify-content:space-between;align-items:center;margin-top:16px;gap:10px;flex-wrap:wrap}
.meter2{height:8px;border-radius:8px;background:var(--line);overflow:hidden;margin-top:8px}
.meter2 i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand2));width:0;transition:width .3s}
.lock{opacity:.65}
.lock::before{content:"🔒 ";}