/* ======================================================================== parameter library (one page) */
.lib-filter{display:flex;margin:0 0 22px}
.lib-filter input{flex:1;max-width:520px;border:1px solid var(--line);background:var(--surface);border-radius:12px;padding:10px 14px;font:15px var(--f-ui);color:var(--ink)}
.lib-filter input:focus{outline:2px solid var(--gold);border-color:transparent}
.lib-sec{margin:0 0 26px}
.lib-sec[hidden]{display:none}
.lib-h{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;border-inline-start:5px solid var(--c,var(--gold));padding:2px 0 2px 12px;margin-bottom:12px}
[dir="rtl"] .lib-h{padding:2px 12px 2px 0}
.lib-h h3{font:500 21px var(--f-disp);margin:0}
.lib-h span{color:var(--ink-3);font-size:13px}
.lib-more{all:unset;cursor:pointer;margin-inline-start:auto;font:600 13px var(--f-ui);color:var(--accent)}
.lib-more:hover{text-decoration:underline}
.mcards{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:14px}
.mcard{all:unset;box-sizing:border-box;cursor:pointer;display:grid;grid-template-columns:84px 1fr;gap:14px;align-items:center;padding:12px;border:1px solid var(--line);background:var(--surface);border-radius:14px;transition:border-color .15s,transform .15s,box-shadow .15s}
.mcard:hover,.mcard:focus-visible{border-color:var(--c,var(--gold));transform:translateY(-2px);box-shadow:var(--shadow)}
.mcard[hidden]{display:none}
.mcard .th{width:84px;height:84px;border-radius:11px;background:#05080b center/cover no-repeat}
.mcard .th.none{display:grid;place-items:center;background:linear-gradient(135deg,var(--navy),var(--navy-2));color:var(--gold-2);font:500 22px var(--f-disp)}
.mcard .tx{display:flex;flex-direction:column;gap:4px;min-width:0}
.mcard b{font:600 16px/1.3 var(--f-ui);color:var(--ink)}
.mcard small{color:var(--ink-3);font-size:13px;line-height:1.4;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
@media (max-width:760px){.mcards{grid-template-columns:minmax(0,1fr)}}



/* ======================================================================== membership & locks */
.plan-badge{display:inline-flex;align-items:center;gap:5px;font:700 11px var(--f-ui);letter-spacing:.06em;text-transform:uppercase;border-radius:999px;padding:2px 9px}
.plan-badge.pro{background:linear-gradient(180deg,#f1dfb2,#d6b46a);color:#1b1407}
.plan-badge.free{background:var(--sunken);color:var(--ink-2)}
.lockwall{max-width:640px;margin:40px auto;text-align:center;padding:34px 28px;border-radius:24px;color:#fff;
  background:radial-gradient(600px 220px at 50% -20%,rgba(214,180,106,.35),transparent 65%),linear-gradient(135deg,#0b1220,#16263d);box-shadow:var(--shadow-lg)}
.lockwall .ico{width:54px;height:54px;margin:0 auto 12px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.08)}
.lockwall .ico svg{width:26px;height:26px;stroke:var(--gold-2)}
.lockwall h2{font:400 32px/1.1 var(--f-disp);margin:0 0 8px;color:#fff}
.lockwall p{color:rgba(255,255,255,.78);margin:0 auto 18px;max-width:46ch}
.lockwall .btns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;margin-top:14px}
.plan{border:1px solid var(--line);border-radius:16px;padding:14px;background:var(--surface)}
.plan.pro{border-color:var(--gold);box-shadow:0 0 0 1px var(--gold) inset}
.plan h4{margin:0 0 6px;display:flex;align-items:center;gap:8px;font:600 16px var(--f-ui)}
.plan ul{margin:6px 0 0;padding-inline-start:18px;font-size:13.5px;color:var(--ink-2)}
.plan li.no{color:var(--ink-3);text-decoration:line-through}
#tabs button.locked::after{content:"PRO";font:800 9px var(--f-ui);background:var(--gold);color:#1b1407;border-radius:6px;padding:1px 4px;margin-inline-start:5px}
#tabs button.locked.mem::after{content:"";width:7px;height:7px;border-radius:50%;background:var(--gold-2);padding:0}

/* ======================================================================== admin dashboard */
.adm{display:grid;gap:18px}
.adm-tabs{display:flex;gap:6px;flex-wrap:wrap}
.adm-tabs button{border:1px solid var(--line);background:var(--surface);color:var(--ink-2);border-radius:10px;padding:8px 14px;font:600 14px var(--f-ui);cursor:pointer}
.adm-tabs button[aria-pressed="true"]{background:var(--navy);color:#fff;border-color:var(--navy)}
.adm-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.adm-stat{border:1px solid var(--line);border-radius:14px;padding:12px 14px;background:var(--surface)}
.adm-stat b{display:block;font:400 30px/1 var(--f-disp)}
.adm-stat span{color:var(--ink-3);font-size:13px}
.adm-card{border:1px solid var(--line);border-radius:16px;background:var(--surface);overflow:hidden}
.adm-card > h3{margin:0;padding:14px 16px;border-bottom:1px solid var(--line);font:500 19px var(--f-disp)}
.adm-card .pad{padding:14px 16px}
.adm table{width:100%;border-collapse:collapse;font-size:14px}
.adm th,.adm td{padding:9px 12px;border-bottom:1px solid var(--line-2);text-align:start;vertical-align:middle}
.adm th{font:700 11px var(--f-ui);letter-spacing:.06em;text-transform:uppercase;color:var(--ink-3)}
.adm td small{color:var(--ink-3)}
.adm select,.adm input[type=date],.adm input[type=text],.adm textarea{border:1px solid var(--line);background:var(--surface-2);color:var(--ink);border-radius:8px;padding:6px 8px;font:14px var(--f-ui)}
.adm textarea{width:100%;box-sizing:border-box;min-height:70px}
.adm .row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line-2);flex-wrap:wrap}
.adm .row:last-child{border-bottom:0}
.adm .row b{font-weight:600}
.adm .row small{display:block;color:var(--ink-3);font-size:12.5px;margin-top:2px}
.adm .seg{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.adm .seg button{border:0;background:var(--surface);color:var(--ink-2);padding:7px 12px;font:600 13px var(--f-ui);cursor:pointer}
.adm .seg button+button{border-inline-start:1px solid var(--line)}
.adm .seg button[aria-pressed="true"]{background:var(--navy);color:#fff}
.adm .seg button[aria-pressed="true"][data-v="pro"]{background:linear-gradient(180deg,#f1dfb2,#d6b46a);color:#1b1407}
.switch{position:relative;width:46px;height:26px;border-radius:999px;background:var(--line);border:0;cursor:pointer;transition:background .2s;flex:none}
.switch::after{content:"";position:absolute;top:3px;inset-inline-start:3px;width:20px;height:20px;border-radius:50%;background:#fff;transition:inset-inline-start .2s;box-shadow:0 1px 3px rgba(0,0,0,.3)}
.switch[aria-checked="true"]{background:var(--ok)}
.switch[aria-checked="true"]::after{inset-inline-start:23px}
.adm .wrap-tbl{overflow-x:auto}
#tabs button{white-space:nowrap}
/* academic headings: regular weight, no decorative italics */
.hero h1{font-weight:400;letter-spacing:-.015em}
.hero h1 em{font-style:normal}
.stats b,.pcard .th.none{font-weight:400}
.lhead h2,.dhead h3{letter-spacing:-.01em}

/* ======================================================================== admin dashboard v2 */
button.adm-stat{all:unset;box-sizing:border-box;border:1px solid var(--line);border-radius:14px;padding:12px 14px;background:var(--surface);cursor:default}
button.adm-stat[data-go]{cursor:pointer}button.adm-stat[data-go]:hover{border-color:var(--gold)}
.adm-chart{display:flex;align-items:flex-end;gap:3px;height:120px;padding:14px 16px}
.adm-chart span{flex:1;height:100%;display:flex;align-items:flex-end}
.adm-chart i{display:block;width:100%;height:max(2px,var(--h));border-radius:4px 4px 0 0;background:linear-gradient(180deg,var(--gold-2),var(--gold))}
.adm-tools{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line-2)}
.adm-tools input[type=search]{flex:1 1 220px;min-width:0;border:1px solid var(--line);background:var(--surface-2);color:var(--ink);border-radius:10px;padding:8px 10px;font:14px var(--f-ui)}
.adm-tools .seg{flex-wrap:wrap}
.adm-acts{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.adm tr[data-id]{cursor:pointer}.adm tr[data-id]:hover td{background:var(--surface-2)}
.adm tr.off td{opacity:.6}
.adm-note{color:var(--gold)!important}
.adm-form{display:grid;gap:12px}
.adm-form label{display:grid;gap:4px;font-size:13px;font-weight:600;color:var(--ink-2)}
.adm-form label small{font-weight:400;color:var(--ink-3)}
.adm-form label.chk{display:flex;gap:8px;align-items:center;font-weight:500}
.adm-form input:not([type=checkbox]),.adm-form select,.adm-form textarea{border:1px solid var(--line);background:var(--surface-2);color:var(--ink);border-radius:10px;padding:9px 10px;font:14px var(--f-ui)}
.adm-form textarea{min-height:70px}
.adm-form fieldset{border:1px solid var(--line-2);border-radius:12px;padding:10px 12px;display:grid;gap:10px}
.adm-form .seg{display:inline-flex;border:1px solid var(--line);border-radius:10px;overflow:hidden;justify-self:start}
.adm-form .seg button{border:0;background:var(--surface);color:var(--ink-2);padding:7px 16px;font:600 13px var(--f-ui);cursor:pointer}
.adm-form .seg button[aria-pressed="true"]{background:var(--navy);color:#fff}
.adm-form .seg button[aria-pressed="true"][data-v="pro"]{background:linear-gradient(180deg,#f1dfb2,#d6b46a);color:#1b1407}
.adm-quick{display:flex;flex-wrap:wrap;gap:6px}.adm-quick .btn{padding:6px 10px;font-size:12.5px}
.adm-form .err{color:var(--sev);min-height:1em;margin:0}
.btn.danger{color:var(--sev);border-color:var(--sev)}
.adm-pro{display:flex;flex-wrap:wrap;gap:6px}
.adm-qlist{list-style:none;margin:0;padding:0 16px;display:grid;gap:6px}
.adm-qlist li{display:grid;grid-template-columns:30px 1fr auto;gap:10px;align-items:center;padding:8px 10px;border:1px solid var(--line-2);border-radius:10px;background:var(--surface-2)}
.adm-qn{width:26px;height:26px;border-radius:8px;display:grid;place-items:center;background:var(--navy);color:var(--gold-2);font-size:12px;font-weight:700}
.adm-qlist small{color:var(--ink-3)}
.adm-qb{display:flex;gap:4px}.adm-qb .ibtn{width:30px;height:30px;color:var(--ink-2);background:var(--surface);border-color:var(--line)}
.adm-qb .ibtn[disabled]{opacity:.35;cursor:default}
#qAdd{border:1px solid var(--line);background:var(--surface-2);color:var(--ink);border-radius:10px;padding:8px 10px;font:14px var(--f-ui);max-width:100%}
.adm-grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px}
.adm-grid2 fieldset,.adm-card .pad fieldset{border:1px solid var(--line-2);border-radius:12px;padding:10px 12px;display:grid;gap:10px}
.adm-card label{display:grid;gap:4px;font-size:13px;font-weight:600;color:var(--ink-2)}
.adm-card label small{font-weight:400;color:var(--ink-3)}
.adm-card label.chk{display:flex;gap:8px;align-items:center;font-weight:500}
.adm-card input:not([type=checkbox]),.adm-card select{border:1px solid var(--line);background:var(--surface-2);color:var(--ink);border-radius:10px;padding:8px 10px;font:14px var(--f-ui);max-width:100%}
.adm-card td input[type=number]{width:130px}
.adm-card > h3 + .pad, form.adm-card > h3{margin-top:0}

/* ======================================================================== sign-in window */
.auth-box{position:relative;width:min(440px,100%)}
.auth-x{position:absolute;top:12px;inset-inline-end:14px;border:0;background:none;font-size:24px;color:var(--ink-3);cursor:pointer;line-height:1}
.g-wrap{display:grid;justify-items:center;gap:10px;margin:6px 0 10px}
.auth-or{font-size:12px;color:var(--ink-3);display:flex;align-items:center;gap:10px;width:100%}
.auth-or::before,.auth-or::after{content:"";flex:1;height:1px;background:var(--line)}
.auth-tabs{display:flex;border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-bottom:4px}
.auth-tabs[hidden]{display:none}
.auth-tabs button{flex:1;border:0;background:var(--surface);color:var(--ink-2);padding:9px;font:600 13.5px var(--f-ui);cursor:pointer}
.auth-tabs button[aria-pressed="true"]{background:var(--navy);color:#fff}
.auth-tabs button[hidden]{display:none}
.modal input.otp{font:600 22px var(--f-mono);letter-spacing:.4em;text-align:center;height:48px}
.auth-go{width:100%;margin-top:6px;justify-content:center}
.auth-mini{display:flex;justify-content:space-between;gap:10px;margin-top:10px;font-size:13px}
.auth-mini .linkish[disabled]{color:var(--ink-3);cursor:default}

/* ======================================================================== Pro plans page (js/pro.js) */
.pro-status{font-weight:600;color:var(--accent)}
.pay-msg{padding:12px 16px;border-radius:12px;margin:0 0 16px;font-weight:600}
.pay-msg.ok{background:var(--ok-soft);color:var(--ok)}.pay-msg.no{background:var(--sev-soft);color:var(--sev)}
.pro-plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:10px 0 20px}
.pro-plan{position:relative;border:1px solid var(--line);border-radius:22px;padding:24px 22px;background:var(--surface);box-shadow:var(--shadow);display:flex;flex-direction:column;gap:10px}
.pro-plan.best{border-color:var(--gold);box-shadow:0 0 0 2px var(--gold) inset,var(--shadow-lg);background:radial-gradient(400px 200px at 50% -20%,var(--gold-soft),transparent 70%),var(--surface)}
.pro-tag{position:absolute;top:-12px;inset-inline-start:22px;background:linear-gradient(180deg,#f1dfb2,#d6b46a);color:#1b1407;font:800 11px var(--f-ui);letter-spacing:.06em;text-transform:uppercase;padding:4px 10px;border-radius:999px}
.pro-plan h3{font:500 24px var(--f-disp);margin:0}
.pro-price{display:flex;align-items:baseline;gap:6px}.pro-price b{font:400 34px/1 var(--f-disp)}.pro-price span{color:var(--ink-3);font-size:13px}
.pro-price.usdt b{font-size:22px;color:var(--ink-2)}
.pro-save{align-self:flex-start;font:700 12px var(--f-ui);color:var(--ok);background:var(--ok-soft);padding:3px 9px;border-radius:999px}
.pro-btns{display:grid;gap:8px;margin-top:auto}.pro-btns .btn{justify-content:center}
.pro-feats{border:1px solid var(--line-2);border-radius:16px;padding:14px 18px;background:var(--surface-2);margin-bottom:16px}
.pro-feats h4{margin:0 0 6px}.pro-feats ul{margin:0;padding-inline-start:20px;columns:2;font-size:14px}
.usdt-pay{padding:20px 22px;margin:0 0 16px}
.usdt-pay h3{font:500 22px var(--f-disp);margin:0 0 8px}
.usdt-pay ol{margin:6px 0;padding-inline-start:20px}
.usdt-amt{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:6px 0 12px}.usdt-amt b{font:600 26px var(--f-mono);color:var(--gold)}
.usdt-addr{display:grid;grid-template-columns:150px 1fr;gap:16px;align-items:center;margin:6px 0}
.usdt-qr{background:#fff;border-radius:12px;padding:6px}.usdt-qr svg{display:block;width:100%;height:auto}
.usdt-addr code{display:block;font:14px var(--f-mono);word-break:break-all;padding:10px;border-radius:10px;background:var(--sunken);margin-bottom:8px}
.usdt-st{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:12px;font-size:14px}
.usdt-spin{width:18px;height:18px;border-radius:50%;border:2.5px solid var(--line);border-top-color:var(--gold);animation:simspin 1s linear infinite}
@media (max-width:560px){.usdt-addr{grid-template-columns:1fr}.usdt-qr{max-width:180px}.pro-feats ul{columns:1}}
.usdt-nets{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px}
.usdt-net{all:unset;box-sizing:border-box;cursor:pointer;display:grid;gap:3px;padding:14px 16px;border:1px solid var(--line);border-radius:14px;background:var(--surface-2)}
.usdt-net:hover,.usdt-net:focus-visible{border-color:var(--gold)}
.usdt-net small{color:var(--ink-3);font-size:12.5px}
.usdt-tx{margin-top:14px;border-top:1px solid var(--line-2);padding-top:10px}
.usdt-tx summary{cursor:pointer;font-weight:600;font-size:14px}
.usdt-tx form{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 4px}
.usdt-tx input{flex:1 1 280px;min-width:0;border:1px solid var(--line);background:var(--surface-2);color:var(--ink);border-radius:10px;padding:9px 10px;font:13px var(--f-mono)}