:root{
  --accent:#717ABB; --accent-strong:#5B64A8; --accent-soft:rgba(113,122,187,.14); --lilac:#9D93C7;
  --bg:#EEEEF4; --text:#1D1D1F; --text-2:#6E6E73; --text-3:#A1A1A6;
  --glass:rgba(255,255,255,.58); --glass-2:rgba(255,255,255,.42); --glass-strong:rgba(255,255,255,.78);
  --edge:rgba(255,255,255,.7); --edge-in:rgba(255,255,255,.9); --hair:rgba(0,0,0,.07);
  --blob-1:#C9C3EC; --blob-2:#DCE8F7; --blob-3:#F2D9E6;
  --green:#34A853; --green-soft:rgba(52,168,83,.14); --orange:#E8890C; --orange-soft:rgba(232,137,12,.14); --red:#D93B30;
  --shadow:0 1px 1px rgba(0,0,0,.03),0 12px 32px rgba(40,40,80,.08);
  --font:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","Inter","Helvetica Neue",Arial,sans-serif;
  box-sizing:border-box; padding-top:env(safe-area-inset-top,0px); padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0B0B10; --text:#F5F5F7; --text-2:#A1A1A6; --text-3:#6E6E73;
  --glass:rgba(40,40,52,.52); --glass-2:rgba(40,40,52,.36); --glass-strong:rgba(44,44,58,.78);
  --edge:rgba(255,255,255,.12); --edge-in:rgba(255,255,255,.18); --hair:rgba(255,255,255,.09);
  --blob-1:#2A2A5C; --blob-2:#1A2A44; --blob-3:#3A2440; --accent-soft:rgba(157,147,199,.2); --shadow:0 20px 50px rgba(0,0,0,.45);
}}
:root[data-theme="dark"]{
  --bg:#0B0B10; --text:#F5F5F7; --text-2:#A1A1A6; --text-3:#6E6E73;
  --glass:rgba(40,40,52,.52); --glass-2:rgba(40,40,52,.36); --glass-strong:rgba(44,44,58,.78);
  --edge:rgba(255,255,255,.12); --edge-in:rgba(255,255,255,.18); --hair:rgba(255,255,255,.09);
  --blob-1:#2A2A5C; --blob-2:#1A2A44; --blob-3:#3A2440; --accent-soft:rgba(157,147,199,.2); --shadow:0 20px 50px rgba(0,0,0,.45);
}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
*,*::before,*::after{box-sizing:border-box}

body{margin:0;background:var(--bg);background-image:radial-gradient(60% 50% at 10% 0%,var(--blob-1),transparent 60%),radial-gradient(50% 45% at 100% 20%,var(--blob-2),transparent 60%),radial-gradient(45% 40% at 60% 100%,var(--blob-3),transparent 60%);background-attachment:fixed;color:var(--text);font-family:var(--font);font-size:15px;line-height:1.47;-webkit-font-smoothing:antialiased;letter-spacing:-.01em}
button{font:inherit;color:inherit}
a{color:var(--accent-strong);text-decoration:none}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:8px}
h1,h2,h3{margin:0;letter-spacing:-.025em}

/* shell */
.shell{display:grid;grid-template-columns:248px minmax(0,1fr);min-height:100vh}
.side{position:sticky;top:0;height:100vh;padding:20px 14px;background:var(--glass-2);backdrop-filter:saturate(180%) blur(30px);-webkit-backdrop-filter:saturate(180%) blur(30px);border-right:1px solid var(--edge);display:flex;flex-direction:column;gap:2px}
.brand{display:flex;align-items:center;padding:8px 8px 26px}
.wordmark{display:block;height:26px;width:auto;content:url(/static/logo.png)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .wordmark{content:url(/static/logo-white.png)}}
:root[data-theme="dark"] .wordmark{content:url(/static/logo-white.png)}
.logo{width:30px;height:30px;border-radius:9px;background:linear-gradient(145deg,var(--lilac),var(--accent-strong));display:grid;place-items:center;flex:none}
.logo span{width:12px;height:12px;border-radius:50%;border:2.5px solid #fff}
.nav-item{display:flex;align-items:center;gap:11px;padding:8px 10px;border-radius:9px;color:var(--text);cursor:pointer;border:0;background:none;width:100%;text-align:left;font-size:14.5px}
.nav-item svg{width:19px;height:19px;color:var(--accent-strong);flex:none}
.nav-item:hover{background:var(--hair)}
.nav-item.on{background:var(--accent);color:#fff}
.nav-item.on svg{color:#fff}
.nav-item .count{margin-left:auto;font-size:12.5px;color:var(--text-2)}
.nav-item.on .count{color:rgba(255,255,255,.85)}
.side-label{font-size:12px;font-weight:600;color:var(--text-3);padding:18px 10px 6px}
.side-foot{margin-top:auto;display:flex;align-items:center;gap:10px;padding:10px;border-radius:12px;border:0;background:none;width:100%;text-align:left;cursor:pointer}
.side-foot:hover{background:var(--hair)}
.side-foot.on{background:var(--glass-strong);box-shadow:inset 0 0 0 1px var(--edge)}
.foot-gear{width:16px;height:16px;color:var(--text-3);margin-left:auto;flex:none}
.avatar{width:32px;height:32px;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:600;color:#fff;background:var(--lilac);flex:none}
.side-foot .who{font-size:13.5px;line-height:1.25}
.side-foot .who small{display:block;color:var(--text-2);font-size:12px}
.main{padding:44px clamp(20px,4vw,56px) 120px;max-width:1180px;width:100%}
.tabbar{display:none}

/* type */
.eyebrow-date{color:var(--text-2);font-size:15px;margin-bottom:4px}
.title{font-size:40px;font-weight:700;line-height:1.08}
.subtitle{color:var(--text-2);font-size:17px;margin-top:8px;max-width:60ch}
.section-title{font-size:21px;font-weight:600;margin:40px 0 14px;display:flex;align-items:baseline;justify-content:space-between}
.section-title a{font-size:15px;font-weight:400}
.muted{color:var(--text-2)}
.small{font-size:13px}

/* surfaces */
.glass,.panel,.list,.course,.modal{background:var(--glass);backdrop-filter:saturate(180%) blur(30px);-webkit-backdrop-filter:saturate(180%) blur(30px);border:1px solid var(--edge);box-shadow:var(--shadow),inset 0 1px 0 var(--edge-in)}
.panel{border-radius:20px}
.pad{padding:22px 24px}
.grid{display:grid;gap:18px}
.g-2{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr)}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}

/* grouped list (iOS style) */
.list{border-radius:16px;overflow:hidden}
.row{display:flex;align-items:center;gap:14px;padding:13px 18px;position:relative;cursor:pointer;background:none;border:0;width:100%;text-align:left}
.row+.row::before{content:"";position:absolute;top:0;left:62px;right:0;border-top:1px solid var(--hair)}
.row.plain+.row.plain::before{left:18px}
.row:hover{background:var(--glass-strong)}
.row .icon{width:32px;height:32px;border-radius:8px;display:grid;place-items:center;color:#fff;flex:none}
.row .icon svg{width:17px;height:17px}
.row .body{flex:1;min-width:0}
.row .body b{font-weight:500;display:block}
.row .body span{color:var(--text-2);font-size:13.5px}
.row .meta{color:var(--text-2);font-size:15px;white-space:nowrap}
.chev{width:8px;height:13px;color:var(--text-3);flex:none}
.badge{min-width:24px;height:24px;padding:0 8px;border-radius:12px;background:var(--accent);color:#fff;font-size:13px;font-weight:600;display:grid;place-items:center}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:980px;padding:10px 20px;font-size:15px;font-weight:500;cursor:pointer;background:var(--accent);color:#fff;min-height:40px}
.btn:hover{background:var(--accent-strong)}
.btn.secondary{background:var(--accent-soft);color:var(--accent-strong)}
.btn.ghost{background:none;color:var(--accent-strong);padding:10px 12px}
.btn.lg{padding:13px 26px;font-size:16px}
.pill{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:500;padding:3px 10px;border-radius:980px;background:var(--hair);color:var(--text-2)}
.pill.green{background:var(--green-soft);color:var(--green)}
.pill.orange{background:var(--orange-soft);color:var(--orange)}
.pill.accent{background:var(--accent-soft);color:var(--accent-strong)}

/* listener home */
.hero{display:grid;grid-template-columns:auto minmax(0,1fr);gap:36px;align-items:center;padding:32px 36px}
.ring{position:relative;width:184px;height:184px}
.ring svg{transform:rotate(-90deg)}
.ring .track{stroke:var(--accent-soft)}
.ring .fill{stroke:url(#ringGrad);stroke-linecap:round;transition:stroke-dashoffset 1.1s cubic-bezier(.2,.8,.2,1)}
.ring .center{position:absolute;inset:0;display:grid;place-content:center;text-align:center}
.ring .center b{font-size:44px;font-weight:700;letter-spacing:-.04em;line-height:1}
.ring .center span{color:var(--text-2);font-size:13px;margin-top:6px}
.next{margin-top:22px;padding:16px 18px;border-radius:16px;background:var(--glass-strong);display:flex;align-items:center;gap:16px;border:1px solid var(--edge)}
.next .thumb{width:56px;height:56px;border-radius:12px;background:linear-gradient(145deg,var(--lilac),var(--accent-strong));display:grid;place-items:center;color:#fff;flex:none}
.next .thumb svg{width:22px;height:22px}
.path{display:grid;gap:12px}
.course{display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:16px;align-items:center;padding:18px 20px;cursor:pointer;border:0;width:100%;text-align:left;border-radius:18px}
.course:hover{background:var(--glass-strong)}
.course.locked{cursor:default;opacity:.55}
.course .state{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent-strong);font-weight:600}
.course.done .state{background:var(--green-soft);color:var(--green)}
.course .state svg{width:20px;height:20px}
.course h3{font-size:17px;font-weight:600}
.bar{height:6px;border-radius:3px;background:var(--hair);overflow:hidden;margin-top:10px}
.bar i{display:block;height:100%;background:var(--accent);border-radius:3px}
.cert{padding:24px}
.cert h3{font-size:17px;font-weight:600;margin:14px 0 4px}
.checklist{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:10px}
.checklist li{display:flex;gap:10px;align-items:flex-start;font-size:14.5px}
.checklist .dot{width:20px;height:20px;border-radius:50%;border:1.5px solid var(--text-3);flex:none;margin-top:1px;display:grid;place-items:center}
.checklist .ok .dot{background:var(--green);border-color:var(--green);color:#fff}
.checklist .dot svg{width:11px;height:11px}

/* admin home */
.funnel{padding:24px 26px}
.funnel-bar{display:flex;height:44px;border-radius:12px;overflow:hidden;gap:3px;margin:18px 0 14px}
.funnel-bar div{display:grid;place-items:center;color:#fff;font-weight:600;font-size:14px;min-width:34px}
.legend{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.legend div{font-size:13px;color:var(--text-2)}
.legend b{display:block;font-size:24px;font-weight:600;color:var(--text);letter-spacing:-.03em}
.legend i{display:inline-block;width:9px;height:9px;border-radius:3px;margin-right:6px}
.course-stat{display:grid;grid-template-columns:minmax(0,1fr) 120px 44px;gap:14px;align-items:center;padding:12px 0;border-top:1px solid var(--hair)}
.course-stat:first-of-type{border-top:0}
.course-stat .bar{margin:0}
.activity{padding:6px 0}
.act{display:flex;gap:12px;padding:12px 22px;align-items:flex-start}
.act+.act{border-top:1px solid var(--hair)}
.act .avatar{width:30px;height:30px;font-size:12px}
.act p{margin:0;font-size:14.5px}
.act time{color:var(--text-3);font-size:12.5px}

/* course / lesson */
.back{display:inline-flex;align-items:center;gap:4px;color:var(--accent-strong);cursor:pointer;background:none;border:0;padding:0;margin-bottom:18px;font-size:15px}
.back svg{width:9px;height:14px;transform:rotate(180deg)}
.module{margin-top:30px}
.module h2{font-size:15px;font-weight:600;color:var(--text-2);margin:0 0 10px 6px}
.ltype{width:32px;height:32px;border-radius:8px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent-strong);flex:none}
.ltype svg{width:16px;height:16px}
.row.done .ltype{background:var(--green-soft);color:var(--green)}
.row.lock{cursor:default;opacity:.5}
.row.lock:hover{background:none}
.video{aspect-ratio:16/9;border-radius:20px;background:radial-gradient(120% 120% at 20% 10%,#2b2f55,#0d0e1a);display:grid;place-items:center;margin:22px 0;position:relative;overflow:hidden}
.video .play{width:76px;height:76px;border-radius:50%;background:rgba(255,255,255,.18);backdrop-filter:blur(10px);display:grid;place-items:center;border:0;cursor:pointer}
.video .play svg{width:26px;height:26px;color:#fff;margin-left:4px}
.video .scrub{position:absolute;left:20px;right:20px;bottom:18px;height:4px;border-radius:2px;background:rgba(255,255,255,.2)}
.video .scrub i{display:block;width:34%;height:100%;background:#fff;border-radius:2px}
.prose{max-width:66ch;font-size:17px;line-height:1.6}
.prose h3{font-size:21px;margin:28px 0 8px}
.prose ul{padding-left:20px}
.lesson-foot{display:flex;justify-content:space-between;align-items:center;margin-top:36px;padding-top:20px;border-top:1px solid var(--hair);gap:12px;flex-wrap:wrap}
.q{padding:22px 24px;margin-bottom:14px}
.opt{background:var(--glass-strong)}
.q h3{font-size:17px;font-weight:600;margin-bottom:14px}
.opt{display:flex;align-items:center;gap:12px;padding:13px 14px;border-radius:12px;border:1.5px solid var(--hair);margin-top:8px;cursor:pointer;background:none;width:100%;text-align:left;font-size:15px}
.opt:hover{border-color:var(--lilac)}
.opt .radio{width:20px;height:20px;border-radius:50%;border:1.5px solid var(--text-3);flex:none}
.opt.sel{border-color:var(--accent);background:var(--accent-soft)}
.opt.sel .radio{border:6px solid var(--accent)}
.result{text-align:center;padding:48px 24px}
.result .big{font-size:64px;font-weight:700;letter-spacing:-.04em;color:var(--green)}

/* tables */
.seg{display:inline-flex;background:var(--hair);border-radius:9px;padding:2px;gap:2px;margin:22px 0 16px;flex-wrap:wrap}
.seg button{border:0;background:none;padding:6px 14px;border-radius:7px;font-size:13.5px;cursor:pointer;color:var(--text)}
.seg button.on{background:var(--glass-strong);box-shadow:0 1px 3px rgba(0,0,0,.12);font-weight:500}
.search{display:flex;align-items:center;gap:8px;background:var(--hair);border-radius:10px;padding:8px 12px;min-width:240px}
.search input{border:0;background:none;outline:0;font:inherit;color:var(--text);width:100%}
.search svg{width:15px;height:15px;color:var(--text-2)}
.head-row{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap}
.review-media{aspect-ratio:16/9;border-radius:16px;background:radial-gradient(120% 120% at 80% 0%,#3a3260,#111224);display:grid;place-items:center;margin:16px 0}
textarea,input.field,select.field{width:100%;font:inherit;color:var(--text);background:var(--glass-strong);border:1px solid var(--edge);border-radius:12px;padding:12px 14px;resize:vertical}
select.field{appearance:none;-webkit-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%236E6E73' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:16px;padding-right:38px}
textarea:focus,input.field:focus{outline:0;border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
label.f{display:block;font-size:13px;font-weight:500;color:var(--text-2);margin:16px 0 6px}

/* builder */
.builder{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:22px;align-items:start}
.drop{border:1.5px dashed var(--text-3);border-radius:14px;padding:28px;text-align:center;color:var(--text-2)}
.typepick{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:6px}
.typepick button{border:1.5px solid var(--edge);background:var(--glass-strong);border-radius:12px;padding:12px 8px;cursor:pointer;display:grid;justify-items:center;gap:6px;font-size:13px}
.typepick button svg{width:20px;height:20px;color:var(--accent-strong)}
.typepick button.on{border-color:var(--accent);background:var(--accent-soft)}
.switch{width:44px;height:26px;border-radius:13px;background:var(--green);position:relative;flex:none;border:0;cursor:pointer;padding:0;transition:background .2s}
.switch.off{background:rgba(120,120,128,.32)}
.switch::after{content:"";position:absolute;top:2px;right:2px;width:22px;height:22px;border-radius:50%;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.2);transition:transform .2s}
.switch.off::after{transform:translateX(-18px)}

/* sign in */
.signin{min-height:100vh;display:grid;place-items:center;padding:24px}
.signin-card{width:100%;max-width:420px;text-align:center;padding:40px 36px;border-radius:28px}
.signin-card .logo{width:64px;height:64px;border-radius:18px;margin:0 auto 22px}
.signin-card .logo span{width:24px;height:24px;border-width:4px}
.signin-card h1{font-size:32px;font-weight:700}
.signin-card form{margin-top:28px;text-align:left}
.signin-card .field{margin-bottom:10px;padding:14px 16px;font-size:16px}

/* toast */
.toast{position:fixed;top:calc(18px + env(safe-area-inset-top,0px));left:50%;transform:translate(-50%,-30px);opacity:0;background:var(--glass-strong);backdrop-filter:blur(20px);border:1px solid var(--edge);box-shadow:0 10px 30px rgba(0,0,0,.15);border-radius:980px;padding:10px 18px;font-weight:500;z-index:60;transition:.35s cubic-bezier(.2,.8,.2,1);pointer-events:none}
.toast.show{transform:translate(-50%,0);opacity:1}


/* modal */
.scrim{position:fixed;inset:0;background:rgba(20,20,30,.28);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);z-index:70;display:grid;place-items:center;padding:20px;animation:fade .18s ease}
.modal{width:100%;max-width:520px;border-radius:24px;padding:26px 26px 22px;animation:pop .22s cubic-bezier(.2,.8,.2,1)}
.modal h2{font-size:22px;font-weight:700;margin-bottom:4px}
.modal .actions{display:flex;justify-content:flex-end;gap:10px;margin-top:22px}
@media (max-width:600px){.scrim{place-items:end center;padding:0}.modal{max-width:none;border-radius:24px 24px 0 0;padding-bottom:calc(22px + env(safe-area-inset-bottom,0px));max-height:92vh;overflow:auto}}
@keyframes fade{from{opacity:0}}
@keyframes pop{from{opacity:0;transform:translateY(12px) scale(.98)}}
.toolbar{display:flex;gap:2px;flex-wrap:wrap;padding:6px;border:1px solid var(--edge);border-bottom:0;border-radius:12px 12px 0 0;background:var(--glass-2)}
.toolbar button{border:0;background:none;width:32px;height:30px;border-radius:7px;cursor:pointer;color:var(--text-2);font-size:14px;display:grid;place-items:center}
.toolbar button:hover{background:var(--glass-strong);color:var(--text)}
.toolbar .sep{width:1px;background:var(--hair);margin:5px 4px}
.toolbar+textarea{border-radius:0 0 12px 12px}
.inline-lock{display:inline-flex;align-items:center;gap:5px;font-size:12.5px;color:var(--text-2);border:1px solid var(--edge);background:var(--glass-strong);border-radius:980px;padding:3px 10px 3px 8px;cursor:pointer}
.inline-lock svg{width:13px;height:13px}
.inline-lock.locked{color:var(--orange)}
.access{display:inline-flex;background:var(--hair);border-radius:9px;padding:2px;gap:2px}
.access button{border:0;background:none;padding:5px 11px;border-radius:7px;font-size:12.5px;cursor:pointer;color:var(--text)}
.access button.on{background:var(--glass-strong);box-shadow:0 1px 3px rgba(0,0,0,.12);font-weight:500}
.appearance{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:6px}
.appearance button{border:2px solid transparent;border-radius:16px;padding:8px;cursor:pointer;background:none;display:grid;gap:8px;justify-items:center;font-size:13.5px;color:var(--text)}
.appearance button.on{border-color:var(--accent)}
.appearance .sw{width:100%;aspect-ratio:4/3;border-radius:12px;border:1px solid var(--edge);overflow:hidden;position:relative}
.appearance .sw::after{content:"";position:absolute;left:14%;right:14%;top:22%;height:14%;border-radius:4px;background:var(--accent);opacity:.9}
.appearance .sw::before{content:"";position:absolute;left:14%;right:30%;top:48%;height:30%;border-radius:6px;background:rgba(128,128,140,.25)}
.sw.light{background:#EEEEF4}.sw.dark{background:#111118}.sw.auto{background:linear-gradient(100deg,#EEEEF4 50%,#111118 50%)}
.kv{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.dot-check{width:26px;height:26px;border-radius:50%;border:1.5px solid var(--text-3);background:var(--green);color:#fff;cursor:pointer;flex:none;display:grid;place-items:center;padding:0}
.dot-check.off{background:none;color:transparent}
.viewas{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;background:var(--orange-soft);border:1px solid rgba(232,137,12,.3);color:var(--text);border-radius:14px;padding:10px 10px 10px 16px;margin-bottom:22px;font-size:14px}
.perm{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--edge);border-radius:14px;overflow:hidden}
.perm div{padding:10px 12px;font-size:13.5px;border-bottom:1px solid var(--hair)}
.perm div:nth-child(-n+3){background:var(--glass-2);font-weight:600}
.perm .y{color:var(--green)}.perm .n{color:var(--text-3)}
.lock-note{display:flex;gap:8px;align-items:center;font-size:12.5px;color:var(--orange)}

@media (max-width:1000px){.g-2,.builder{grid-template-columns:1fr}.g-3{grid-template-columns:1fr}}
@media (max-width:760px){
  .shell{grid-template-columns:1fr}
  .side{display:none}
  .main{padding:28px 18px 110px}
  .title{font-size:32px}
  .hero{grid-template-columns:1fr;justify-items:center;text-align:center;padding:28px 20px}
  .next{text-align:left}
  .legend{grid-template-columns:repeat(2,1fr)}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:40;background:var(--glass-strong);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-top:1px solid var(--hair);padding:6px 6px calc(6px + env(safe-area-inset-bottom,0px))}
  .tabbar button{flex:1;border:0;background:none;display:grid;justify-items:center;gap:2px;font-size:10.5px;color:var(--text-3);padding:4px 0;cursor:pointer}
  .tabbar button svg{width:22px;height:22px}
  .tabbar button.on{color:var(--accent-strong)}
  .course-stat{grid-template-columns:minmax(0,1fr) 70px 40px}
  .head-row{flex-direction:column;align-items:stretch}
  .head-row>div:last-child{display:flex;gap:10px}
  .search{min-width:0;flex:1}
  .ring{width:150px;height:150px}.ring svg{width:150px;height:150px}.ring .center b{font-size:36px}
  .subtitle{font-size:15.5px}
  .section-title{font-size:19px;margin-top:30px}
  .row{padding:12px 14px;gap:12px}
  .row+.row::before{left:14px}
  .row .meta{font-size:14px}
  .people-extra{display:none}
  .pill.status{min-width:0 !important}
  .hero{gap:20px}
  .next{flex-wrap:wrap}.next .btn{width:100%}
  .lesson-foot .btn{width:100%}
  .typepick{grid-template-columns:repeat(3,1fr)}
  .toolbar button{width:30px}
  .kv{grid-template-columns:1fr}
  .funnel-bar div{font-size:12px}
  .legend b{font-size:20px}
  .modal .actions{flex-direction:column-reverse}.modal .actions .btn{width:100%}
  .signin-card{padding:32px 22px}
  .video{border-radius:14px}
  .prose{font-size:16px}
}
@media (max-width:460px){
  .seg{width:100%;overflow-x:auto;flex-wrap:nowrap;scrollbar-width:none}
  .seg button{white-space:nowrap}
  .avatar.lg{width:56px;height:56px;font-size:20px}
}
@media (prefers-reduced-motion:reduce){*{transition:none !important}}

/* dialogs */
dialog.modal{position:fixed;inset:0;margin:auto;max-height:92vh;overflow:auto;color:var(--text);z-index:70}
dialog.modal::backdrop{background:rgba(20,20,30,.28);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
dialog.modal.wide{max-width:760px}
@media (max-width:600px){dialog.modal{margin:auto 0 0;width:100%;max-width:none;border-radius:24px 24px 0 0}}
.flash{position:fixed;top:calc(16px + env(safe-area-inset-top,0px));left:50%;transform:translateX(-50%);z-index:60;background:var(--glass-strong);backdrop-filter:blur(20px);border:1px solid var(--edge);box-shadow:0 10px 30px rgba(0,0,0,.15);border-radius:980px;padding:10px 18px;font-weight:500;max-width:calc(100% - 32px);text-align:center}
.q-opt{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;border:1.5px solid var(--hair);margin-top:8px;font-size:14.5px}
.q-opt.right{border-color:var(--green);background:var(--green-soft)}
.q-opt.wrong{border-color:var(--red);background:rgba(217,59,48,.1)}
.q-opt .radio{width:18px;height:18px;border-radius:50%;border:1.5px solid var(--text-3);flex:none}
.q-opt.chosen .radio{border-width:5px;border-color:var(--accent)}
.q-opt.chosen.right .radio{border-color:var(--green)}
.q-opt.chosen.wrong .radio{border-color:var(--red)}
.q-opt .tagr{margin-left:auto}
.prose img{max-width:100%;border-radius:12px}
.stepper{display:flex;align-items:center;justify-content:center;gap:18px;margin:22px 0 6px}
.stepper .n{font-size:44px;font-weight:700;letter-spacing:-.04em;min-width:110px;text-align:center}
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th,.tbl td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--hair)}
.tbl th{color:var(--text-2);font-weight:600;font-size:13px}
.hidden{display:none !important}
.nav-item .count{margin-left:auto}
/* password show/hide */
.pw-wrap{position:relative;display:block}
.pw-wrap > input{padding-right:46px !important;margin-bottom:0 !important}
.signin-card .pw-wrap{margin-bottom:10px}
.pw-eye{position:absolute;top:50%;right:6px;transform:translateY(-50%);width:34px;height:34px;border:0;border-radius:8px;background:none;color:var(--text-2);display:grid;place-items:center;cursor:pointer;padding:0}
.pw-eye:hover{color:var(--text);background:var(--hair)}
.pw-eye[aria-pressed="true"]{color:var(--accent-strong)}