/* accounts, sign-in, certificate */
.top nav{align-items:center}
.si{display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-weight:500;text-decoration:none;font-size:13.5px;background:none;border:0;cursor:pointer;font-family:inherit;padding:0}
.si .lk{color:var(--teal2);font-weight:600}
.si .long{color:var(--mute);font-weight:400}
.top nav .si span{display:inline}
.chip{display:inline-flex;align-items:center;gap:9px;background:var(--card);border:1px solid var(--line);border-radius:99px;padding:4px 12px 4px 4px;color:var(--ink);font-size:13.5px;font-weight:500}
.top nav .chip,.top nav .chip span{display:inline-flex}
.av{width:28px;height:28px;border-radius:50%;background:var(--teal);color:var(--onteal);display:grid!important;place-items:center;font-weight:700;font-size:12px;flex:none}
.so{background:none;border:0;color:var(--mute);font:500 13px var(--sans);cursor:pointer;text-decoration:underline;text-underline-offset:3px;padding:0}
.so:hover{color:var(--ink)}
.inp{flex:1;min-width:0;width:100%;background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:12px 14px;color:var(--ink);font:500 16px var(--sans);outline:0}
.inp::placeholder{color:#6f797e}
.inp:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(79,163,160,.18)}
.save{margin-top:16px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px 24px}
.save h4{font-family:var(--serif);font-weight:400;font-size:19px}
.save p{color:var(--mute);font-size:13.5px;margin-top:4px}
.save form{display:flex;gap:10px;margin-top:14px}
.save .btn{margin:0;padding:12px 18px;white-space:nowrap;width:auto}
.fine{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--mute);margin-top:12px}
.fine svg{flex:none}
.saved{display:flex;align-items:center;gap:8px;margin-top:16px;padding:10px 12px;border-radius:9px;background:rgba(79,163,160,.10);color:var(--teal2);font-size:13px;font-weight:500;overflow-wrap:anywhere}
.saved svg{flex:none}
.wb{margin-top:18px;font-size:16px;color:var(--ink)}
.wb b{font-weight:600}
.wb span{color:var(--mute)}
.wbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:14px;padding:12px 16px;border-radius:10px;background:rgba(79,163,160,.10);border:1px solid rgba(79,163,160,.28);font-size:14.5px}
.wbar a{font-weight:600;text-decoration:none;white-space:nowrap}
.err{color:#e48a83;font-size:13px;margin-top:8px;min-height:0}
.err:empty{display:none}
/* sheet */
.sh-bg{position:fixed;inset:0;background:rgba(8,10,12,.62);z-index:50;display:flex;align-items:center;justify-content:center;padding:20px;opacity:0;transition:opacity .15s}
.sh-bg.on{opacity:1}
.sheet{position:relative;width:100%;max-width:440px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px 26px 24px;box-shadow:0 20px 60px rgba(0,0,0,.45)}
.sheet h3{font-family:var(--serif);font-weight:400;font-size:24px;line-height:1.25;padding-right:28px}
.sheet p{color:var(--mute);font-size:14px;margin-top:6px}
.sheet p b{color:var(--ink);font-weight:600;overflow-wrap:anywhere}
.sheet label{display:block;font-size:12.5px;font-weight:600;color:var(--mute);margin:16px 0 7px;letter-spacing:.02em}
.sheet .btn{width:100%;justify-content:center;margin-top:20px}
.sheet .x{position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:50%;border:0;background:transparent;color:var(--mute);font-size:22px;cursor:pointer;line-height:1}
.sheet .x:hover{background:var(--card2);color:var(--ink)}
.sheet .alt{display:block;margin:14px auto 0;background:none;border:0;color:var(--teal2);font:600 13.5px var(--sans);cursor:pointer}
.sheet .two{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.btn[disabled]{opacity:.6;cursor:default}
/* certificate on landing + chapter pages */
.certbox{margin-top:34px;display:flex;align-items:center;gap:22px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:22px 24px}
.certbox.open{border-color:rgba(79,163,160,.5);background:linear-gradient(180deg,rgba(79,163,160,.10),var(--card) 80%)}
.certbox .sl{flex:none;width:62px;height:62px;border-radius:50%;background:radial-gradient(circle at 35% 30%,#5cb3af,#2f7f7c 60%,#246a67);display:grid;place-items:center;box-shadow:0 0 0 3px var(--card),0 0 0 4px #2f7f7c;color:#eaf6f5;font-family:var(--serif);font-style:italic;font-size:19px}
.certbox.locked .sl{background:var(--card2);box-shadow:0 0 0 3px var(--card),0 0 0 4px var(--line);color:var(--mute)}
.certbox h3{font-family:var(--serif);font-weight:400;font-size:21px}
.certbox p{color:var(--mute);font-size:14px;margin-top:3px}
.certbox .btn{margin:0 0 0 auto;white-space:nowrap;width:auto}
.certbox .cbody{flex:1;min-width:0}
/* certificate page */
.crq{display:grid;grid-template-columns:1fr 470px;gap:48px;padding:48px 0 64px;align-items:start}
.crq h1{font-size:48px}
.crq .intro{color:var(--mute);font-size:17px;margin-top:18px;max-width:600px}
.crq .intro b{color:var(--ink);font-weight:600}
.form{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:26px}
.form h3{font-family:var(--serif);font-weight:400;font-size:24px}
.form label{display:block;font-size:12.5px;font-weight:600;color:var(--mute);margin:18px 0 7px;letter-spacing:.02em}
.form .inp{width:100%;display:block}
.form .hint{font-size:12.5px;color:var(--mute);margin-top:6px}
.form .btn{width:100%;justify-content:center;margin-top:22px}
.thumb{margin-top:20px;border-radius:8px;overflow:hidden;border:1px solid var(--line);background:#111;aspect-ratio:11/8.5}
.thumb canvas{display:block;width:100%;height:auto}
.tcap{display:flex;justify-content:space-between;font-size:12.5px;color:var(--mute);margin-top:8px}
.okmsg{margin-top:14px;padding:10px 12px;border-radius:9px;background:var(--okbg);color:#6fcf9f;font-size:13.5px;font-weight:500}
.okmsg:empty{display:none}
.lockv{padding:56px 0 72px;max-width:640px}
.lockv h1{font-size:44px}
.lockv p{color:var(--mute);margin-top:14px;font-size:16px}
.lockv .btn{width:auto}
@media(max-width:600px){
 .top nav{gap:14px}
 .si .long{display:none!important}
 .chip .em{display:none!important}.chip{padding:3px}
 .save{padding:18px}.save form{flex-direction:column}.save .btn{justify-content:center;width:100%}
 .sh-bg{align-items:flex-end;padding:0}
 .sheet{max-width:none;border-radius:16px 16px 0 0;padding:24px 20px calc(22px + env(safe-area-inset-bottom));border-bottom:0}
 .certbox{flex-direction:column;align-items:flex-start;gap:14px;padding:20px}
 .certbox .btn{margin:0;width:100%;justify-content:center}
 .crq{grid-template-columns:1fr;gap:26px;padding:30px 0 44px}.crq h1{font-size:34px}.form{padding:20px}
 .lockv{padding:36px 0 50px}.lockv h1{font-size:32px}.lockv .btn{width:100%}
 .wbar a{white-space:normal}
}
.pw{position:relative}.pw .inp{padding-right:64px}
.eye{position:absolute;right:6px;top:50%;transform:translateY(-50%);background:none;border:0;color:var(--teal2);font:600 13px var(--sans);cursor:pointer;padding:8px 10px}
.inp[readonly]{color:var(--mute);background:rgba(0,0,0,.18)}
.sheet .links{display:flex;justify-content:center;gap:18px;flex-wrap:wrap;margin-top:12px}.sheet .links .alt{margin:0}
.sheet .fine[hidden]{display:none}
@media(max-width:600px){.top nav>a{display:none}.brand{white-space:nowrap;font-size:17px}.so{white-space:nowrap}.top nav .acct{gap:10px!important}}
.sheet{max-height:calc(100vh - 40px);max-height:calc(100dvh - 40px);overflow-y:auto;-webkit-overflow-scrolling:touch}
@media(max-width:600px){.sheet{max-height:calc(100vh - 12px);max-height:calc(100dvh - 12px)}.sheet label{margin:12px 0 6px}.sheet .btn{margin-top:16px}}
button.chip{cursor:pointer;font-family:inherit}
.amenu{position:absolute;right:0;top:calc(100% + 10px);z-index:40;width:250px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;box-shadow:0 14px 40px rgba(0,0,0,.45);display:flex!important;flex-direction:column;gap:2px}
.amenu[hidden]{display:none!important}
.amenu b{font-weight:600;color:var(--ink);font-size:14.5px}.amenu span{color:var(--mute);font-size:13px;overflow-wrap:anywhere;display:block!important}
.amenu .btn{margin-top:12px;width:100%;justify-content:center;padding:10px 14px}
@media(max-width:600px){.top nav .acct .so{display:none}}