/* Reused from samval-biblioteca/platform/public/styles.css; local font paths and PDF-only overrides follow. */
@font-face{font-family:Jakarta;src:url('/assets/fonts/jakarta.woff2') format('woff2');font-weight:200 800;font-display:swap}@font-face{font-family:Instrument;src:url('/assets/fonts/instrument.woff2') format('woff2');font-weight:400;font-style:italic;font-display:swap}
:root{color-scheme:dark;--bg:#0f0b0a;--surface:#1a1412;--ink:#f4ede5;--muted:#b4a599;--gold:#e0b075;--red:#b8281f;--line:#ffffff18}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.6 Jakarta,'Segoe UI',sans-serif}button,input,a{-webkit-tap-highlight-color:transparent}button,input{font:inherit}button,a{touch-action:manipulation}button,a,input{outline-offset:5px}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--gold)}button{cursor:pointer;color:inherit}a{color:inherit;text-decoration:none}button:disabled{cursor:wait;opacity:.55}h1,h2,h3,p{margin:0}button{border:0}img,svg{max-width:100%}.site-header{height:94px;padding:0 5%;display:flex;align-items:center;gap:60px;border-bottom:1px solid var(--line);background:#0f0b0af5;position:relative;z-index:2}.brand{display:flex;align-items:center;gap:10px;line-height:1}.brand img{width:45px;height:46px;object-fit:contain}.brand>span{font-size:29px;font-weight:750;letter-spacing:-1.5px}.brand small{display:block;font-size:8px;letter-spacing:3.4px;font-weight:550;color:var(--gold);margin:9px 0 0 2px}.site-header nav{display:flex;align-items:center;gap:30px;font-size:12px}.site-header nav span{color:#9b8d81}.site-header nav a{padding:8px 0;border-bottom:1px solid var(--gold)}.search{margin-left:auto;display:flex;gap:10px;align-items:center;border:1px solid #ffffff26;border-radius:100px;padding:9px 16px;width:250px;background:#ffffff04}.search>span{font-size:23px;line-height:1;color:var(--gold)}.search input{min-width:0;width:100%;border:0;background:transparent;color:var(--ink);font-size:11px;outline:0}.search input::placeholder{color:#b4a599}.search:focus-within{outline:2px solid var(--gold)}.featured{position:relative;min-height:590px;padding:62px 5% 60px;overflow:hidden;isolation:isolate;background:radial-gradient(ellipse at 90% 25%,#721c1529,transparent 60%)}.hero-copy{position:relative;z-index:1;max-width:610px;pointer-events:none}.hero-copy button{pointer-events:auto}.eyebrow{font-size:9px;letter-spacing:2.3px;font-weight:650;color:var(--gold)}h1{font-size:clamp(36px,4.5vw,66px);letter-spacing:-2.6px;line-height:1.07;font-weight:750;margin:25px 0 22px}h1 em{font-family:Instrument,Georgia,serif;font-size:1.13em;font-weight:400;color:var(--gold);letter-spacing:-1.8px}.hero-description{max-width:410px;font-size:13px;line-height:1.9;color:#cbbeb3}.feature-meta{display:flex;gap:15px;align-items:center;margin:30px 0 8px;font-size:9px;letter-spacing:.5px;color:#c1aea0}.feature-meta span:first-child{color:var(--gold);font-size:8px;letter-spacing:1px}.hero-copy h2{font-size:20px;font-weight:650;letter-spacing:-.6px}.feature-subtitle{font-size:11px;color:var(--muted);margin:4px 0 20px}.actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.button{display:inline-flex;justify-content:center;align-items:center;gap:12px;min-height:46px;padding:12px 24px;border-radius:100px;font-size:12px;font-weight:650;border:1px solid #ffffff26;background:var(--surface);cursor:pointer}.primary{background:linear-gradient(135deg,#b8281f,#8f1d16 80%);border-color:#d255483a;color:#fff4ec;box-shadow:0 5px 24px #8f1d1620}.primary:hover{background:#c33227}.secondary{background:#ffffff09;backdrop-filter:blur(10px)}.secondary:hover{background:#ffffff14}.hero-visual{position:absolute;z-index:-1;right:0;top:0;width:59%;height:100%;display:grid;place-items:center;overflow:hidden;background:radial-gradient(ellipse at 60% 50%,#8f1d163b,transparent 65%);mask-image:linear-gradient(to right,transparent,#000 25%)}.math-art{color:#e0b075;width:100%;height:100%}.math-art text{font:italic 25px Georgia,serif;fill:currentColor;stroke:none}.hero-visual .large{width:80%;height:86%;transform:rotate(-8deg);filter:drop-shadow(0 10px 45px #e0b07514)}.orbit{position:absolute;width:550px;height:550px;border:1px solid #e0b07513;border-radius:50%;right:-85px;top:15px;z-index:-1}.o2{width:700px;height:700px;right:-160px;top:-60px}.hero-index{position:absolute;right:5%;bottom:40px;font-size:9px;letter-spacing:4px;color:#a58f7c}.catalog{padding:30px 5% 60px;scroll-margin-top:30px}.catalog-bar{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:20px}.catalog-bar h2{font-size:22px;font-weight:650;letter-spacing:-.7px}.catalog-bar p{font-size:11px;color:var(--muted)}.filters{display:flex;gap:8px;overflow-x:auto;scrollbar-width:thin;padding:3px 3px 13px;margin-bottom:22px}.filters button{border:1px solid #ffffff21;background:transparent;flex:none;border-radius:100px;padding:9px 16px;font-size:10px;min-height:38px;color:#c3b7ad}.filters button[aria-pressed=true]{background:#f4ede5;color:#211817;border-color:#f4ede5}.shelf{margin:28px 0 42px}.shelf-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:16px}.shelf-heading h2{font-size:19px;font-weight:650;letter-spacing:-.5px}.shelf-heading p{color:#9b8d81;font-size:11px;margin-top:3px}.shelf-actions{display:flex;gap:8px;align-items:center}.shelf-actions span{color:#a89c90;font-size:9px;margin-right:12px}.shelf-actions button{border:1px solid #ffffff25;background:transparent;border-radius:50%;width:34px;height:34px;font-size:21px;line-height:1}.shelf-actions button:hover{background:#ffffff18}.card-row{display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:thin;scrollbar-color:#705547 transparent;padding:5px 3px 12px;margin:-5px -3px -12px}.activity-card{background:none;flex:0 0 calc((100% - 48px)/4);min-width:220px;max-width:370px;padding:0;text-align:left;scroll-snap-align:start;border-radius:9px;transition:transform .18s}.activity-card:hover{transform:translateY(-4px)}.cover{position:relative;height:175px;border:1px solid #ffffff18;overflow:hidden;border-radius:8px;background:radial-gradient(ellipse at 75% 25%,#8f1d1660,transparent 70%),#201512}.tone-1 .cover,.detail-banner.tone-1{background:radial-gradient(ellipse at 80% 25%,#b4774160,transparent 75%),#291d13}.tone-2 .cover,.detail-banner.tone-2{background:radial-gradient(ellipse at 80% 25%,#7252a367,transparent 75%),#1c1722}.tone-3 .cover,.detail-banner.tone-3{background:radial-gradient(ellipse at 80% 25%,#2f806055,transparent 75%),#121e1a}.tone-4 .cover,.detail-banner.tone-4{background:radial-gradient(ellipse at 80% 25%,#86745860,transparent 75%),#231c15}.cover>.math-art{position:absolute;width:76%;height:115%;right:-6%;top:-15%;opacity:.82}.cover:after{content:'';position:absolute;inset:0;background:linear-gradient(0deg,#130e0df2,transparent 75%)}.cover-label{position:absolute;z-index:1;left:16px;top:13px;font-size:6px;letter-spacing:1.8px;color:#eadac6}.cover-title{position:absolute;bottom:16px;left:16px;right:30px;z-index:1;font-size:20px;font-weight:750;letter-spacing:-.7px;line-height:1.2;max-width:190px}.card-play{position:absolute;right:14px;bottom:16px;z-index:2;font-size:20px;color:var(--gold);opacity:0;transition:opacity .18s}.activity-card:hover .card-play,.activity-card:focus-visible .card-play{opacity:1}.card-caption{display:block;padding:12px 2px}.card-caption strong{display:block;font-weight:500;font-size:11px;line-height:1.5;color:#d3c8bd}.card-caption small{font-size:9px;color:#9c8b7e;display:block;margin-top:4px}.site-footer{border-top:1px solid var(--line);padding:36px 5% 45px;display:flex;align-items:center;gap:30px}.site-footer .brand>span{font-size:22px}.site-footer .brand img{width:32px;height:32px}.site-footer p{font:italic 21px Instrument,Georgia,serif;color:var(--gold)}.site-footer>small{margin-left:auto;font-size:9px;color:var(--muted)}dialog{width:min(820px,calc(100% - 32px));max-height:90dvh;overflow-y:auto;padding:0;border:1px solid #ffffff20;border-radius:16px;background:#1a1412;color:var(--ink);box-shadow:0 25px 120px #000b}dialog::backdrop{background:#080505c9;backdrop-filter:blur(6px)}.detail-banner{height:290px;position:relative;overflow:hidden;background:radial-gradient(at 80% 20%,#8f1d16a0,transparent 75%),#221612}.detail-banner:after{content:'';position:absolute;inset:0;background:linear-gradient(0deg,#1a1412,transparent 75%);pointer-events:none}.detail-banner>.math-art{position:absolute;width:65%;height:140%;right:-3%;top:-15%;opacity:.75}.detail-banner>div{position:absolute;z-index:1;bottom:24px;left:36px;right:36px;max-width:550px}.detail-banner h2{font-size:42px;line-height:1.15;letter-spacing:-1.5px;margin-top:14px}.close{position:absolute;right:18px;top:18px;z-index:3;background:#0f0b0ad9;border:1px solid #ffffff25;border-radius:50%;width:38px;height:38px;font-size:24px}.detail-body{padding:0 36px 32px}.detail-body>.close{position:relative;float:right}.detail-meta{display:flex;gap:18px;font-size:10px;color:#c7b4a5}.detail-meta span:first-child{color:var(--gold)}.detail-description{font-size:13px;line-height:1.8;margin:20px 0 24px;color:#d6c9bf;max-width:660px}.downloads{display:flex;gap:15px;flex-wrap:wrap;align-items:center;margin:20px 0 30px}.downloads .button{font-size:11px;min-height:42px}.downloads small{flex-basis:100%;font-size:9px;color:#a89c90}.text-link{border:0;background:none;color:var(--gold);font-size:11px;padding:9px 0;cursor:pointer}.text-link:hover{text-decoration:underline}.episode-heading{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:8px 0 16px}.episode-heading h3{font-size:20px;font-weight:600}.episode-heading span{font-size:10px;color:var(--muted)}.episodes{list-style:none;margin:0;padding:0}.episodes li{display:grid;grid-template-columns:25px 96px minmax(0,1fr);gap:18px;align-items:center;padding:20px 0;border-bottom:1px solid var(--line)}.episode-number{font-size:18px;color:#a89c90;font-weight:400}.episode-art{height:62px;border-radius:5px;background:#30201a;overflow:hidden}.episode-art svg{height:110%;opacity:.75}.episodes strong{font-size:12px;font-weight:550;line-height:1.7;display:block;overflow-wrap:anywhere}.episodes p{font-size:10px;color:#a89c90;margin-top:5px}.practice{max-width:990px;margin:32px auto 60px;padding:0 24px}.practice-heading{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:20px}.practice-heading>span{font-size:12px;color:var(--muted);text-align:right}.practice samval-player{display:block;--player-font:Jakarta,'Segoe UI',sans-serif}.result-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin:30px 0}.practice .downloads{justify-content:center;text-align:center}.practicing .site-header .search,.practicing .site-header nav{display:none}.empty,.loading{text-align:center;padding:80px 20px}.empty p{margin:12px 0 25px;color:var(--muted)}.empty h1{font-size:32px}#notice{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:10;background:#f4ede5;color:#211817;border-radius:10px;padding:12px 22px;max-width:calc(100% - 32px);width:max-content;font-size:12px;box-shadow:0 5px 30px #0007;display:none}#notice.visible{display:block}.sr-only,.skip:not(:focus){position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip:focus{display:block;padding:12px;background:var(--red)}
@media(min-width:1600px){.site-header,.featured,.catalog,.site-footer{padding-left:max(5%,calc((100% - 1500px)/2));padding-right:max(5%,calc((100% - 1500px)/2))}.featured{min-height:650px}.hero-copy{max-width:650px}.activity-card{flex-basis:calc((100% - 64px)/5)}}
@media(max-width:1000px){.site-header{gap:35px;height:82px}.site-header nav{gap:20px}.site-header nav span{display:none}.search{width:215px}.featured{min-height:565px}.hero-copy{max-width:510px}.hero-visual{width:65%;opacity:.7}.hero-copy h1{font-size:50px}.activity-card{flex-basis:calc((100% - 32px)/3)}.site-footer{flex-wrap:wrap;gap:16px}.site-footer>small{flex-basis:100%;margin:0}.catalog-bar p{display:none}}
@media(max-width:650px){.site-header{height:78px;gap:18px;padding:0 20px}.brand img{width:33px;height:35px}.brand>span{font-size:23px}.brand small{font-size:6px;letter-spacing:2.7px;margin-top:7px}.site-header nav{display:none}.search{width:auto;flex:1;max-width:200px;padding:8px 12px;gap:6px}.search input{font-size:10px}.featured{min-height:620px;padding:38px 24px 35px}.hero-copy{max-width:400px}.hero-copy h1{font-size:44px;letter-spacing:-1.8px;margin-top:23px}.hero-copy h1 em{font-size:1.14em}.eyebrow{font-size:7px;letter-spacing:1.6px}.hero-description{font-size:12px;max-width:285px}.hero-visual{width:100%;height:65%;top:auto;bottom:0;opacity:.42;mask-image:linear-gradient(to bottom,transparent,#000 50%);transform:translateX(22%)}.hero-visual .large{width:100%;height:100%}.feature-meta{margin-top:34px;flex-wrap:wrap;gap:7px;font-size:8px;max-width:280px}.feature-meta span:first-child{flex-basis:100%}.hero-copy h2{font-size:21px}.hero-index{display:none}.actions{gap:9px}.button{font-size:11px;padding:11px 19px;min-height:44px}.catalog{padding:20px 20px 30px}.catalog-bar h2{font-size:20px}.filters{margin-bottom:15px;margin-right:-20px;padding-right:20px}.filters button{font-size:10px;min-height:40px}.shelf{margin:22px 0 30px}.shelf-heading h2{font-size:17px}.shelf-heading p{font-size:10px;max-width:240px}.shelf-actions span{display:none}.shelf-actions button{width:30px;height:30px}.card-row{gap:12px;margin-right:-20px;padding-right:20px}.activity-card{flex-basis:75%;min-width:210px;max-width:300px}.cover{height:173px}.cover-title{font-size:22px}.card-caption strong{font-size:11px}.site-footer{padding:28px 24px;gap:15px}.site-footer p{font-size:19px;flex-basis:100%}.site-footer>small{font-size:8px}dialog{width:calc(100% - 16px);max-height:94dvh;border-radius:12px}.detail-banner{height:240px}.detail-banner>div{left:22px;right:22px}.detail-banner h2{font-size:34px}.detail-body{padding:0 22px 22px}.detail-meta{font-size:9px;gap:12px}.detail-description{font-size:12px}.episode-heading span{font-size:9px}.episode-heading h3{font-size:18px}.episodes li{grid-template-columns:22px minmax(0,1fr);gap:12px;padding:18px 0}.episode-art{display:none}.episodes strong{font-size:11px}.episodes p{font-size:9px}.downloads{gap:12px}.downloads .button{font-size:10px;padding:10px 16px}.downloads small{font-size:9px}.practice{padding:0 10px;margin:20px auto}.practice-heading{padding:0 10px;align-items:start}.practice-heading>span{font-size:10px;max-width:42%}.practice-heading .text-link{font-size:10px;padding:0}.result-actions{padding:0 12px}.practice .downloads{padding:0 15px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

body:has(dialog[open]){overflow:hidden}

#practice-player::part(identity){display:none}

.site-header{position:sticky;top:0}.catalog{scroll-margin-top:110px}

/* Consistent icon geometry and comfortable controls at every viewport. */
.ui-icon{display:block;width:20px;height:20px;flex:0 0 20px;overflow:visible}
.button,.text-link{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-size:14px;line-height:1.4;min-height:44px}
.search>span{display:flex;align-items:center;justify-content:center}
.search input{font-size:14px;line-height:1.5}
.shelf-actions{flex:none}.shelf-actions button,.close{display:grid;place-items:center;width:44px;height:44px;padding:0;flex:none}
.shelf-actions button[hidden]{display:none}.shelf-actions button:disabled{opacity:.3;cursor:default;background:transparent}
.card-row,.filters{scrollbar-width:none}.card-row::-webkit-scrollbar,.filters::-webkit-scrollbar{display:none}
.card-row{align-items:stretch}.activity-card{display:flex;flex-direction:column}.cover{width:100%;flex:none}.card-caption{width:100%}
.card-play{display:grid;place-items:center;width:24px;height:24px}
.filters button{font-size:12px;min-height:44px}.card-caption strong,.shelf-heading p{font-size:13px}.card-caption small,.shelf-actions span{font-size:11px}
.result-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));overflow:visible;margin:0;padding:0}.result-grid .activity-card{min-width:0;max-width:none}
.detail-toolbar{position:sticky;top:0;height:0;z-index:4;overflow:visible}.detail-toolbar .close{top:14px;right:14px;box-shadow:0 2px 12px #0008}
.detail-body>.close{margin-bottom:18px}.detail-meta,.episodes p,.episode-heading span,.downloads small{font-size:12px}.episodes strong,.detail-description{font-size:14px}
.downloads .button{font-size:14px;min-height:46px}.download-status{flex-basis:100%;color:var(--gold);font-size:13px}
.practice{max-width:968px}.practice-heading .text-link{justify-content:flex-start}.practice-heading>span{line-height:1.5}
#practice-player{scroll-margin-top:110px}
@media(max-width:650px){.site-header{flex-wrap:wrap;height:auto;min-height:78px;gap:12px;padding:14px 20px}.search{min-width:130px;max-width:none}.search input{font-size:16px}.shelf-heading{align-items:flex-start;gap:12px}.shelf-actions{gap:5px}.shelf-actions button{width:44px;height:44px}.shelf-heading p{font-size:12px}.button,.downloads .button{font-size:14px}.filters button{font-size:12px}.detail-meta{flex-wrap:wrap;gap:6px 14px}.episodes strong{font-size:13px}.episodes p{font-size:12px}.episode-heading span{max-width:110px;text-align:right}.practice-heading{padding:0;align-items:center;gap:12px}.practice-heading .text-link{font-size:12px;padding:0}.practice-heading>span{font-size:11px}.result-grid{grid-template-columns:repeat(auto-fill,minmax(210px,1fr));margin:0;padding:0}.featured{min-height:580px}.downloads small{font-size:11px}.cover-label{font-size:8px}}
@media(max-width:360px){.site-header .search{flex-basis:100%}.site-header{gap:14px}.practicing .site-header{min-height:78px}.catalog{scroll-margin-top:150px}.shelf-heading{flex-wrap:wrap}.shelf-actions{margin-left:auto}.hero-copy h1{font-size:38px}.button{padding:11px 16px}}

.practice{max-width:1160px}

@media (min-width:900px) and (min-height:680px){
  .practicing .site-header,.practicing .site-footer{display:none}
  .practicing .practice{max-width:1240px;margin:8px auto 0;padding:0 16px}
  .practicing .practice-heading{height:28px;margin-bottom:6px}
  .practicing .practice-heading .text-link{padding:0}
}

/* Continuous page rhythm, quiet transitions, and complete interaction states. */
html{scrollbar-gutter:stable}#main{min-height:calc(100svh - 230px)}#admin-entry{min-width:104px;justify-content:flex-end}.site-header{backdrop-filter:blur(18px)}
.activity-card{transition:transform .18s ease,opacity .18s ease}.activity-card:hover{transform:translateY(-2px)}.activity-card[aria-busy=true] .cover{border-color:#e0b07588}.activity-card[aria-busy=true] .cover:after{background:linear-gradient(0deg,#130e0df2,#e0b0750c)}
.route-progress{position:fixed;inset:0 0 auto;z-index:30;height:3px;overflow:hidden;opacity:0;animation:route-visible .1s .4s forwards;pointer-events:none}.route-progress span{display:block;height:100%;width:45%;background:linear-gradient(90deg,transparent,#e0b075,transparent);animation:route-travel 1.8s ease-in-out infinite}
@keyframes route-visible{to{opacity:1}}@keyframes route-travel{from{transform:translateX(-100%)}to{transform:translateX(330%)}}
.detail-banner h2{text-wrap:balance}.detail-body{padding-bottom:30px}.detail-description{line-height:1.85}.detail-meta{line-height:1.6}.downloads{gap:12px 24px;padding:22px 0;margin:24px 0;border-block:1px solid var(--line)}.downloads .button{background:#f4ede5;color:#211817;border-color:#f4ede5;box-shadow:none;backdrop-filter:none}.downloads .button:hover{background:#fff9f0}.downloads .text-link{text-underline-offset:4px}.downloads small{line-height:1.7;max-width:590px}.detail-notice{padding:13px 16px;border-left:2px solid var(--gold);border-radius:0 8px 8px 0;background:#e0b0750b;color:#e6d5c3;font-size:13px;line-height:1.6;margin:-8px 0 24px}
#notice{background:#261d18;color:#f4ede5;border:1px solid #e0b07540;border-radius:14px;padding:14px 20px;font-size:13px;line-height:1.6;box-shadow:0 10px 40px #0005}#notice.visible{animation:notice-arrive .18s ease-out}.practice-heading{min-height:38px}.practice-heading>span{font-size:12px}.practicing #main{min-height:0}
@media(max-width:650px){#admin-entry{min-width:0}.downloads{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:12px 18px}.downloads>.button:first-child{grid-column:1/-1;width:100%;min-height:48px}.downloads>.text-link{justify-content:flex-start;text-align:left;font-size:13px;min-height:46px}.downloads>small{grid-column:1/-1;font-size:12px}.detail-banner{height:235px}.detail-banner h2{font-size:clamp(27px,6.5vw,36px);line-height:1.2}.detail-description{font-size:14px}.site-footer p{font-size:21px}.practice-heading>span{font-size:11px}.route-progress{height:2px}}
@media(prefers-reduced-motion:reduce){.route-progress{animation:none;opacity:1}.route-progress span{animation:none;width:100%;opacity:.55}#notice.visible{animation:none}}

@keyframes notice-arrive{from{opacity:0;translate:0 5px}to{opacity:1;translate:0 0}}
/* Activity actions share one visual treatment and a stable vertical layout. */
.downloads{display:grid;grid-template-columns:minmax(0,1fr);gap:12px;align-items:stretch}.downloads>.button{grid-column:1/-1;width:100%;min-height:48px;font-size:14px;line-height:1.5}.downloads>.button svg{width:19px;height:19px;flex:none}.downloads>.text-link{grid-column:1/-1;justify-self:start;min-height:44px;display:inline-flex;align-items:center;padding:6px 0;font-size:13px}.practice .downloads{max-width:620px;margin-inline:auto}.episodes p{line-height:1.6}
.card-play{display:grid;place-items:center;width:34px;height:34px;border:1px solid #e0b07580;border-radius:50%;background:#211817e8;color:#f4ede5;box-shadow:0 3px 12px #0003;transform:translateY(3px);transition:opacity .18s ease,transform .18s ease}.card-play svg{width:20px;height:20px}.activity-card:hover .card-play,.activity-card:focus-visible .card-play{transform:translateY(0)}@media(prefers-reduced-motion:reduce){.card-play{transition:none;transform:none}}
.activity-card .cover-title{right:62px}
.downloads .button-spinner{width:19px;height:19px;flex:none;animation:button-spin .8s linear infinite}.downloads a[aria-busy=true]{cursor:progress}.downloads .text-link{gap:9px}.downloads .download-error{grid-column:1/-1;color:#e0b075;font-size:13px;line-height:1.6;margin:0}.downloads .sr-only{grid-column:1/-1}@keyframes button-spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.downloads .button-spinner{animation:none}}

/* Compact facts, with a wider track for the difficulty range. */
.detail-toolbar .close{display:grid;place-items:center;padding:0;line-height:0}.detail-toolbar .close svg{display:block;width:20px;height:20px;flex:none}.detail-banner h2{margin-top:0}
dl.detail-meta{display:grid;grid-template-columns:.7fr .95fr 1.6fr .85fr;gap:12px;margin:0;padding:12px 0 13px;border-block:1px solid var(--line);line-height:1.4}
.detail-meta>div{min-width:0}.detail-meta dt{color:var(--muted);font-size:10px;margin-bottom:4px}.detail-meta dd{margin:0;color:var(--ink);font-size:14px;font-weight:600;line-height:1.4;overflow-wrap:anywhere}.detail-meta dd small{display:block;font-size:9px;font-weight:400;color:var(--muted);margin-top:3px;line-height:1.4}.detail-meta>div:nth-child(3) dd{color:var(--gold)}
@media(max-width:480px){dl.detail-meta{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 18px}}

/* A practice owns the screen; site navigation returns when the learner exits. */
.practicing .practice{max-width:1240px;margin:0 auto;padding:0}
.practice-exit{display:grid;place-items:center;flex:0 0 44px;width:44px;height:44px;min-height:44px;padding:0;border:1px solid #ffffff14;border-radius:50%;background:#ffffff06;color:#c7b8aa;line-height:0}
.practice-exit:hover{background:#ffffff0c;color:#f4ede5}.practice-exit svg{display:block;width:20px;height:20px}

/* Completion actions belong to the player's summary, inside the same viewport. */
.completion-actions{margin-top:18px;color:#211817;font-family:var(--player-font,Jakarta,'Segoe UI',sans-serif)}
.completion-actions .result-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:0;padding:0}
.completion-actions .button{min-height:44px;padding:8px 10px;font-size:13px;line-height:1.4}
.completion-actions .secondary{background:transparent;backdrop-filter:none;border-color:#d7c6b8;color:#543e30}
.completion-actions .downloads{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:4px 16px;margin:10px 0 0;padding:0;text-align:center}
.completion-actions .downloads>.button{flex:none;width:auto;min-height:44px;padding:6px 4px;border:0;background:transparent;box-shadow:none;color:#8f1d16;font-size:12px}
.completion-actions .downloads>.text-link{min-height:44px;padding:6px 0;color:#8f1d16;font-size:12px}
@media(max-height:500px) and (min-width:560px){.completion-actions{margin-top:0}}

/* Annual curriculum and the existing examples share source revisions. */
.curriculum{padding:12px 0 44px;margin-bottom:36px;border-bottom:1px solid var(--line)}.curriculum-heading{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:22px}.curriculum-heading h2{margin:8px 0 0;font-size:30px;letter-spacing:-.7px}.curriculum-heading>p,.grade-topics>p{color:var(--muted);font-size:13px;line-height:1.7}.grade-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(125px,1fr));gap:10px}.grade-card{display:flex;flex-direction:column;align-items:start;gap:12px;min-height:108px;border:1px solid var(--line);border-radius:14px;padding:20px;background:#ffffff04;color:var(--ink);text-align:left}.grade-card strong{font-size:27px;font-weight:500;line-height:1}.grade-card span{font-size:11px;color:var(--gold)}.grade-card.preparing{background:transparent}.grade-card.preparing span{color:var(--muted)}button.grade-card:hover,button.grade-card[aria-expanded=true]{border-color:var(--gold);background:#e0b0750b}.grade-topics{margin-top:28px}.grade-topics h3{font-size:23px}.curriculum-topic{border-top:1px solid var(--line)}.curriculum-topic:last-child{border-bottom:1px solid var(--line)}.curriculum-topic summary{cursor:pointer;padding:18px 0;font-size:17px;line-height:1.5}.curriculum-topic summary>span{color:var(--gold);font-size:12px;margin-right:14px}.topic-content{padding:0 0 24px 30px}.topic-content ul{font-size:13px;color:var(--muted);line-height:1.8;padding-left:18px}.topic-activities{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.topic-activities button{display:flex;flex-direction:column;gap:7px;min-height:68px;padding:14px;background:#ffffff04;color:var(--ink);border:1px solid var(--line);border-radius:10px;text-align:left;font:inherit;font-size:13px}.topic-activities small{color:var(--muted);font-size:10px}.topic-activities button:hover{border-color:var(--gold)}.grade-card:focus-visible,.curriculum-topic summary:focus-visible,.topic-activities button:focus-visible{outline:2px solid var(--gold);outline-offset:3px}@media(max-width:600px){.curriculum-heading{display:block}.grade-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.grade-card{padding:15px 12px;min-height:101px}.grade-card strong{font-size:24px}.grade-card span{font-size:10px}.topic-content{padding-left:0}.topic-activities{grid-template-columns:1fr}.curriculum-heading h2{font-size:26px}.curriculum-topic summary{font-size:15px}}
.topic-concepts{max-width:760px;line-height:1.8;font-size:14px}.topic-concepts h4{margin:22px 0 8px;font-size:15px}.topic-concepts p,.topic-guidance p,.topic-guidance dd{color:var(--muted);font-size:13px;line-height:1.8}.topic-concepts a,.topic-guidance a{color:var(--gold);text-underline-offset:4px}.worked-example,.topic-guidance{margin:14px 0;padding:0 14px;border:1px solid var(--line);border-radius:10px}.worked-example summary,.topic-guidance summary{font-size:13px;padding:14px 0}.topic-guidance dt{font-size:13px;font-weight:600}.topic-guidance dd{margin:8px 0 18px}.topic-guidance{scroll-margin-top:130px}.topic-guidance:target{border-color:var(--gold)}.curriculum-materials{display:flex;flex-wrap:wrap;gap:10px 24px;margin:18px 0}.curriculum-materials .text-link{color:var(--gold);font-size:13px}.topic-activities{margin:22px 0}

/* PDF-only adaptations. Original catalog, hero, shelves and dialog styling above. */
.empty-hero-action{margin-top:30px}.hero-copy .empty-hero-action a{pointer-events:auto}.catalog-loading{padding:70px 5%;color:var(--muted)}.downloads .text-link{display:inline-flex;align-items:center;gap:8px;background:transparent}.downloads .text-link svg{width:18px;height:18px;flex:none}.download-status{flex-basis:100%;min-height:1.6em;color:var(--muted);font-size:12px}.download-status:empty{display:none}.detail-objectives{margin:25px 0 30px}.detail-objectives h3{font-size:17px;color:var(--ink);margin-bottom:14px}.detail-objectives ol{padding-left:22px}.detail-objectives li{padding-left:4px;margin:0 0 13px;color:var(--ink);font-size:14px;line-height:1.8}.detail-objectives small{display:block;color:var(--muted);font-size:11px}.episode-art img{width:100%;height:100%;object-fit:contain}.downloads>.download-error,.downloads>.download-status{grid-column:1/-1}.site-header .search{max-width:310px;width:100%}.featured .hero-copy h1 em{max-width:600px}dialog .episode-heading{margin:28px 0 10px}.state-panel .actions:empty{display:none}
@media(max-width:650px){.site-header .search{max-width:none}.downloads>.text-link{padding:0;grid-column:1/-1}.detail-objectives li{font-size:13px}.catalog-bar p{max-width:160px;text-align:right}.featured{min-height:550px}.site-header nav{display:none}}

/* Exact PageState styles extracted from presentation/loading.ts. */
.experience-enter{animation:none}.state-panel{max-width:660px;min-height:340px;margin:48px auto;padding:40px 28px;text-align:center;border:1px solid #e0b07524;border-radius:20px;background:radial-gradient(ellipse at 50% 0%,#8f1d161a,transparent 75%),#1a1412;color:#f4ede5}.state-panel>svg{width:48px;height:48px;margin-bottom:20px;color:#e0b075;stroke:currentColor;fill:none;stroke-width:1.3}.state-panel h1,.state-panel h2{font-size:clamp(23px,4vw,30px);line-height:1.3;letter-spacing:-.6px;margin:0 0 12px}.state-panel p{max-width:430px;margin:0 auto 24px;font-size:14px;line-height:1.75;color:#b4a599}.state-panel .actions{justify-content:center}.state-panel a,.state-panel button{min-height:44px}
@media(max-width:650px){.state-panel{margin:28px 16px;min-height:320px;padding:32px 22px}}
button.grade-card.preparing:disabled{cursor:default;opacity:1}button.grade-card.preparing:disabled:hover{border-color:var(--line);background:transparent}#shelves{scroll-margin-top:110px}

/* The original complete workbook is isolated in its own document. */
.complete-preview{position:fixed;inset:0;background:#f7f3ef;color:#211817;z-index:30}.complete-preview-frame{display:block;width:100%;height:100dvh;border:0;background:#f7f3ef}.complete-preview-frame[hidden]{display:none}.preview-loading{position:absolute;top:0;left:0;right:0;padding:26px;background:#fffefc;border-bottom:1px solid #e2d8d0;font-size:14px;z-index:2}.preview-error{padding:35px;max-width:720px;margin:10vh auto}.preview-error h1{font-size:28px;letter-spacing:-.7px}.preview-error p{margin-bottom:25px}

.selection-filters{margin:0 0 34px;padding:24px 0 28px;border-bottom:1px solid var(--line);scroll-margin-top:120px}.selection-controls{display:grid;grid-template-columns:1fr 1.5fr .65fr;gap:16px}.selection-controls label{display:grid;gap:8px;font-size:12px;color:var(--gold);min-width:0}.selection-controls select{width:100%;min-width:0;min-height:44px;padding:10px 32px 10px 12px;font:inherit;color:var(--ink);background:#211a17;border:1px solid #ffffff26;border-radius:8px}.selection-controls select:disabled{opacity:.5}.selection-controls select:focus-visible{outline:2px solid var(--gold);outline-offset:3px}.selection-description{font-size:13px;color:var(--muted);line-height:1.8;margin-top:16px;max-width:860px}.selection-source{font-size:11px;margin-top:10px}.selection-actions{display:flex;gap:18px;align-items:center;flex-wrap:wrap;margin-top:22px}.selection-actions p,.selection-loading{font-size:12px;color:var(--muted)}.selection-actions p{max-width:500px}.selection-actions button:disabled{cursor:default}.selection-source .text-link{padding:0;color:var(--gold);text-decoration:underline}.selection-loading{padding:30px 0}
@media(max-width:650px){.selection-controls{grid-template-columns:1fr}.selection-filters{scroll-margin-top:150px}.selection-actions{align-items:flex-start}.selection-actions .button{width:100%}.selection-controls select{font-size:16px}}