/* ======================================================================== 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(200px,1fr));gap:10px}
.mcard{all:unset;box-sizing:border-box;cursor:pointer;display:grid;grid-template-columns:48px 1fr;gap:10px;align-items:center;padding:8px;border:1px solid var(--line);background:var(--surface);border-radius:12px;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:48px;height:48px;border-radius:9px;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 16px var(--f-disp)}
.mcard .tx{display:flex;flex-direction:column;gap:1px;min-width:0}
.mcard b{font:600 14px/1.25 var(--f-ui);color:var(--ink)}
.mcard small{color:var(--ink-3);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ======================================================================== header logo */
.ht-logo{display:inline-flex;align-items:center;gap:7px;text-decoration:none;color:#fff;padding:5px 10px 5px 8px;border:1px solid rgba(255,255,255,.16);border-radius:999px;background:rgba(255,255,255,.05);font:700 13px var(--f-ui);letter-spacing:.01em;white-space:nowrap}
.ht-logo svg{width:22px;height:22px;flex:none}
.ht-logo b{font-weight:700}
.ht-logo span{color:var(--gold-2)}

@media (max-width:1680px){.ht-logo .ht-word{display:none}.ht-logo{padding:6px}}

/* ======================================================================== 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}