/* Slovo v44 — a floating glass control layer over sky, mint and warm daylight.
   Optical edges are static. Only selection transforms move; lesson paper stays calm. */
:root {
  --bg:#e9f2f7; --cream:var(--bg); --ink:#143b40; --navy:var(--ink);
  --ink-soft:#425e65; --ink-light:var(--ink-soft); --card:#fdfdf9;
  --card-border:#b9cdd0; --control-border:#6e898e;
  --glass-fill:rgba(248,255,253,.48); --glass-panel:rgba(255,255,250,.64);
  --glass-edge:rgba(255,255,255,.88); --glass-edge-low:rgba(255,255,255,.32);
  --glass-shade:rgba(30,72,79,.12); --glass-tint:rgba(186,231,219,.62);
  --glass-selected:linear-gradient(145deg,rgba(255,255,255,.91),rgba(193,235,224,.74) 58%,rgba(227,248,247,.62));
  --glass-sheen:linear-gradient(145deg,rgba(255,255,255,.64),rgba(255,255,255,.06) 42%,rgba(255,255,255,.19) 75%,rgba(255,255,255,.44));
  --glass-shadow:0 18px 48px -22px rgba(29,75,83,.3),0 4px 12px -6px rgba(29,75,83,.12);
  --glass-rim:inset 0 1px 0 var(--glass-edge),inset 1px 0 0 var(--glass-edge-low),inset 0 -1px 0 rgba(255,255,255,.45);
  --glass-radius:28px; --glass-control-radius:18px;
  --sheet:#fcfdf9; --glass-ground:radial-gradient(ellipse at 6% 22%,#a4d9d5 0,transparent 43%),radial-gradient(ellipse at 96% 5%,#cee6f9 0,transparent 46%),radial-gradient(ellipse at 82% 85%,#f4dfb6 0,transparent 46%),linear-gradient(150deg,#e2f1f7,#e5f3ee 53%,#edf0e9);
}
body.night {
  --bg:#102d35; --cream:var(--bg); --ink:#edf8f5; --navy:var(--ink);
  --ink-soft:#b9d1d3; --ink-light:var(--ink-soft); --card:#1c3940;
  --card-border:#456269; --control-border:#8faeb2;
  --glass-fill:rgba(22,53,63,.62); --glass-panel:rgba(27,55,63,.79);
  --glass-edge:rgba(216,255,248,.37); --glass-edge-low:rgba(198,236,240,.14);
  --glass-shade:rgba(0,10,18,.42); --glass-tint:rgba(59,117,111,.42);
  --glass-selected:linear-gradient(145deg,rgba(114,188,174,.36),rgba(66,126,122,.58) 58%,rgba(36,76,90,.72));
  --glass-sheen:linear-gradient(145deg,rgba(187,244,235,.11),rgba(255,255,255,0) 44%,rgba(142,203,218,.03) 76%,rgba(190,255,239,.12));
  --glass-shadow:0 22px 54px -22px rgba(0,10,18,.62),0 5px 14px -6px rgba(0,10,18,.35);
  --glass-rim:inset 0 1px 0 var(--glass-edge),inset 1px 0 0 var(--glass-edge-low),inset 0 -1px 0 rgba(144,211,212,.12);
  --sheet:#1b353d; --glass-ground:radial-gradient(ellipse at 3% 25%,#215950 0,transparent 45%),radial-gradient(ellipse at 95% 0%,#254a64 0,transparent 48%),radial-gradient(ellipse at 86% 92%,#4a4535 0,transparent 46%),linear-gradient(150deg,#112e37,#132f37 55%,#192f35);
}
html{min-height:100%;scroll-padding-bottom:130px}
body,body.night{background:var(--bg);isolation:isolate}
body::before{content:'';position:fixed;inset:0;z-index:-1;pointer-events:none;background:var(--glass-ground)}
#app{max-width:1500px;padding:20px 40px 64px 270px}
header.top{min-height:72px;padding:8px 0 20px;margin-bottom:28px;border:0;gap:12px}
header.top h1{font-size:23px;letter-spacing:-.035em}
header.top h1 small{font-size:12px}
#studio-status{gap:10px;margin:0;padding:9px 13px;border-radius:18px;background:var(--glass-panel);box-shadow:var(--glass-rim);min-height:44px}
.status-pill{font-weight:600}
.direction-selector,.icon-toggle{background:var(--glass-fill);background-image:var(--glass-sheen);border:1px solid var(--glass-edge-low);box-shadow:var(--glass-rim),0 4px 10px -6px var(--glass-shade);border-radius:var(--glass-control-radius);color:var(--ink)}
.direction-selector{max-width:235px;padding-inline:14px;font-size:13px}
.direction-selector option{background:var(--card);color:var(--ink)}
.icon-toggle:hover{background-color:var(--glass-tint)}

/* One elevated rail on desktop, a compact detached dock on phones. */
nav.bottom,body.night nav.bottom{left:max(20px,calc((100vw - 1500px)/2 + 20px));top:20px;bottom:auto;width:214px;height:min(690px,calc(100dvh - 40px));padding:24px 12px 18px;gap:8px;border:1px solid var(--glass-edge-low);border-radius:32px;background:var(--glass-fill);background-image:var(--glass-sheen);box-shadow:var(--glass-rim),var(--glass-shadow);backdrop-filter:blur(24px) saturate(1.55);-webkit-backdrop-filter:blur(24px) saturate(1.55);overflow:auto;isolation:isolate;z-index:20}
.nav-brand{position:relative;z-index:1;margin:0 8px 38px;gap:10px}
.nav-brand b{font-size:30px;letter-spacing:-.05em}
.nav-brand b span{font-size:10px;line-height:1.5;font-weight:650;letter-spacing:0;max-width:135px}
.nav-foot{position:relative;z-index:1;padding:18px 10px 0;border-color:var(--card-border);margin-top:auto}
.nav-foot p{font-size:12px;line-height:1.8}
nav.bottom button{z-index:1;isolation:auto;border-radius:20px;min-height:56px;padding:14px 16px;gap:12px;background:transparent;color:var(--ink-soft);font-size:14px;overflow:visible}
nav.bottom button:hover{background:rgba(255,255,255,.14);color:var(--ink)}
nav.bottom button.active,body.night nav.bottom button.active{color:var(--ink);background:var(--glass-selected);box-shadow:var(--glass-rim)}
nav.bottom.glass-ready button.active,body.night nav.bottom.glass-ready button.active{background:transparent;box-shadow:none}
nav.bottom button.active .ic{color:var(--accent);transform:scale(1.08)}
nav.bottom button:focus-visible{outline-offset:-3px}
.liquid-selection{position:absolute;left:0;top:0;z-index:0;pointer-events:none;border-radius:20px;background:var(--glass-selected);box-shadow:var(--glass-rim),0 6px 16px -8px var(--glass-shade);border:1px solid var(--glass-edge-low);transform-origin:center;transition:none}
.liquid-selection::after{content:'';position:absolute;inset:1px;border-radius:inherit;pointer-events:none;background:linear-gradient(120deg,rgba(255,255,255,.3),transparent 28%,transparent 72%,rgba(255,255,255,.1));box-shadow:inset 0 -2px 5px -3px var(--glass-edge)}
.glass-ready .liquid-selection{transition:transform 430ms cubic-bezier(.16,1,.3,1)}

/* A small number of large material surfaces; no per-card backdrop filters. */
.welcome-panel,.ru-vi-welcome,.direction-welcome,.ru-vi-route-cover,.trail-detail{background:var(--glass-fill);background-image:var(--glass-sheen);border:1px solid var(--glass-edge-low);box-shadow:var(--glass-rim),var(--glass-shadow);border-radius:32px;backdrop-filter:blur(18px) saturate(1.3);-webkit-backdrop-filter:blur(18px) saturate(1.3)}
.welcome-panel,.ru-vi-welcome{min-height:330px;padding:32px;position:relative;overflow:hidden}
.welcome-panel::before,.ru-vi-welcome::before{content:'';position:absolute;right:-15%;top:-30%;width:65%;height:155%;border-radius:50%;pointer-events:none;background:radial-gradient(ellipse at 50% 55%,rgba(237,183,91,.38),rgba(237,183,91,.12) 48%,transparent 70%);z-index:-1}
.welcome-copy h3,.ru-vi-welcome h3{font-size:clamp(42px,4.4vw,64px);line-height:1.25;letter-spacing:-.035em}
.welcome-copy .hero-translation,.ru-vi-welcome .hero-translation{font-size:21px!important;font-weight:550;line-height:1.6}
.ru-vi-welcome p,.hero-description{color:var(--ink-soft)}
.ru-vi-home{grid-template-columns:minmax(0,1fr) 235px;gap:22px}
.studio-grid{gap:24px;grid-template-columns:minmax(0,1fr) 220px}
.ru-vi-next,.next-panel{border:1px solid var(--glass-edge-low);border-radius:24px;background:var(--glass-panel);background-image:var(--glass-sheen);box-shadow:var(--glass-rim),0 12px 28px -20px var(--glass-shade);padding:24px}
.next-panel{margin-top:20px}
.ru-vi-daily,.ru-vi-progress,.daily-panel,.progress-panel,.discovery-panel{background:var(--glass-panel);border:1px solid var(--glass-edge-low);border-radius:24px;box-shadow:var(--glass-rim);padding:23px}
.ru-vi-home-tools>section,.focus-card,.library-card,.scenario-card,.ru-vi-study-list>button{background:var(--glass-panel);border:1px solid var(--glass-edge-low);border-radius:22px;box-shadow:var(--glass-rim);color:var(--ink)}
.ru-vi-home-tools>section{padding:24px}
.focus-card,.library-card,.scenario-card{padding:22px}
.focus-card:hover,.library-card:hover,.ru-vi-study-list>button:hover{background-color:var(--glass-tint);border-color:var(--glass-edge)}
.ru-vi-home-route{background:var(--glass-panel);border:1px solid var(--glass-edge-low);border-radius:26px;box-shadow:var(--glass-rim);margin:0;padding:20px}
.ru-vi-route-art.compact{border-radius:18px}
.ru-vi-study-entry{margin-top:0}
.page-heading,.dashboard-heading{margin-bottom:24px}
.page-heading h2,.dashboard-heading h2{font-weight:750;letter-spacing:-.03em}
.ru-vi-draft{margin:0 0 14px}
.ru-vi-route-intro{display:grid;grid-template-columns:minmax(0,1fr) auto;margin-bottom:20px;gap:6px 20px}
.ru-vi-route-intro p:first-child{grid-column:1/-1}
.ru-vi-route-intro .text-btn{margin:0}
input.sr-only[type=file]{width:1px;max-width:1px;min-width:0}

/* Segmented stage tray with an actual moving lens, not separate flat tiles. */
.ru-vi-route-levels{position:relative;isolation:isolate;gap:6px;padding:7px;border-radius:26px;border:1px solid var(--glass-edge-low);background:var(--glass-fill);background-image:var(--glass-sheen);box-shadow:var(--glass-rim);backdrop-filter:blur(18px) saturate(1.4);-webkit-backdrop-filter:blur(18px) saturate(1.4);margin-bottom:24px}
.ru-vi-route-levels a{position:relative;z-index:1;border:0;border-radius:20px;background:transparent;padding:14px 12px;gap:10px;align-items:center}
.ru-vi-route-levels a[aria-current]{background:var(--glass-selected);box-shadow:var(--glass-rim);color:var(--ink)}
.ru-vi-route-levels.glass-ready a[aria-current]{background:transparent;box-shadow:none}
.ru-vi-route-levels a:hover{background:rgba(255,255,255,.12);transform:none}
.ru-vi-route-levels strong{font-size:13px;line-height:1.5}
.ru-vi-level-number{font-size:24px;min-width:20px}
.ru-vi-route-levels small{font-size:12px}
.ru-vi-route-cover{position:relative;grid-template-columns:minmax(200px,.7fr) 1.3fr;padding:12px;gap:10px;overflow:hidden;margin-bottom:32px}
.ru-vi-route-cover .ru-vi-route-art{border-radius:23px;align-self:stretch;aspect-ratio:1;min-height:280px;width:100%;box-shadow:inset 0 0 0 1px rgba(255,255,255,.4)}
.ru-vi-route-cover>div:last-child{padding:22px}
.ru-vi-route-cover h3{font-size:29px;line-height:1.35}
.ru-vi-route-layout{gap:32px}
.ru-vi-route-detail{padding:26px;border-radius:26px;background:var(--glass-panel);box-shadow:var(--glass-rim)}
.ru-vi-route-map a{padding:10px;border-radius:18px}
.ru-vi-route-map a[aria-current]{background:var(--glass-selected);box-shadow:var(--glass-rim)}
.ru-vi-route-node,.trail-node{border:1px solid var(--glass-edge-low);background:var(--glass-panel);box-shadow:var(--glass-rim),0 5px 10px -7px var(--glass-shade)}
.trail-summary{border:0;padding:0 0 20px}
.trail-detail{padding:16px;gap:26px;margin-bottom:30px}
.trail-landscape>.workshop-art{border-radius:22px;max-width:100%}
.trail-chapter-copy{padding:14px 16px 14px 0}
.trail-region{gap:14px}
.trail-destination{border:1px solid var(--glass-edge-low);border-radius:22px;background:var(--glass-panel);box-shadow:var(--glass-rim);padding:14px}
.trail-destination.selected{background:var(--glass-selected);border-color:var(--accent)}
.trail-field-notes{background:var(--glass-panel);box-shadow:var(--glass-rim);border-radius:24px}

/* Lesson paper rests inside a lit frame. Text and answers never refract. */
.exercise-stage,.ru-vi-study-stage,.lesson-result,.ru-vi-lesson-complete{background:var(--sheet);border:8px solid var(--glass-panel);background-clip:padding-box;border-radius:30px;box-shadow:var(--glass-rim),var(--glass-shadow);padding:30px}
.lesson-topbar,.ru-vi-lesson-header{padding:14px 18px;background:var(--glass-fill);background-image:var(--glass-sheen);box-shadow:var(--glass-rim);border:1px solid var(--glass-edge-low);border-radius:22px;gap:14px}
.lesson-topbar{margin-bottom:22px}
.ru-vi-lesson-header{max-width:820px}
.primary-btn,body.night .primary-btn,.next-panel .primary-btn,body.night .next-panel .primary-btn{border-radius:17px;background-color:var(--action);background-image:linear-gradient(160deg,rgba(255,255,255,.13),transparent 55%,rgba(0,35,36,.08));border:1px solid rgba(255,255,255,.18);box-shadow:inset 0 1px 0 rgba(255,255,255,.22),0 7px 16px -10px rgba(9,57,50,.45);color:var(--on-action)}
.primary-btn:disabled,body.night .primary-btn:disabled{background-image:none;box-shadow:none}
.secondary-btn,.speak-btn,.key,.spell-key,.sentence-token,.goal-option{border-radius:15px;background:var(--glass-panel);background-image:var(--glass-sheen);border:1px solid var(--card-border);box-shadow:inset 0 1px 0 var(--glass-edge);color:var(--ink)}
.answer-option,.ru-vi-options button,.ru-vi-study-options button{background:var(--card);background-image:none;border:1px solid var(--control-border);border-radius:16px;box-shadow:none}
.answer-input{border-radius:17px;background:var(--card);box-shadow:inset 0 2px 4px rgba(24,57,64,.04)}
.profile-identity,.settings-panel,[data-direction=ru-vi] .settings-panel{border:1px solid var(--glass-edge-low);border-radius:26px;background:var(--glass-panel);box-shadow:var(--glass-rim);padding:26px}
.goal-option.active,.goal-option[aria-pressed=true]{background:var(--glass-selected);border-color:var(--accent);color:var(--ink)}
#modal{background:rgba(16,40,48,.26);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
#modal-card,.modal-box,body.night .modal-box{background:var(--glass-panel);background-image:var(--glass-sheen);border:1px solid var(--glass-edge-low);border-radius:30px;box-shadow:var(--glass-rim),0 24px 80px -20px rgba(0,20,30,.38);backdrop-filter:blur(28px) saturate(1.5);-webkit-backdrop-filter:blur(28px) saturate(1.5);color:var(--ink)}
progress,.progress-track,.lesson-progress{box-shadow:inset 0 1px 3px rgba(20,55,65,.12)}
.ru-vi-route-cover progress,.lesson-progress{height:8px}
.view details{scroll-margin-bottom:130px}
.ru-vi-draft[open],.ru-vi-keys[open],.trail-hint[open]{background:var(--glass-panel);border-radius:18px;padding:12px 16px;box-shadow:var(--glass-rim)}

@media(min-width:1600px){#app{padding-right:46px}}
@media(max-width:1150px){#app{padding-left:235px;padding-right:26px}nav.bottom,body.night nav.bottom{width:190px;left:18px}.nav-brand{margin-inline:2px}.nav-brand b{font-size:28px}.nav-brand b span{font-size:9px}.ru-vi-home,.studio-grid{grid-template-columns:minmax(0,1fr) 195px;gap:18px}.ru-vi-welcome,.welcome-panel{padding:26px}.ru-vi-route-cover h3{font-size:25px}.ru-vi-route-cover>div:last-child{padding:16px}.ru-vi-route-layout{grid-template-columns:230px minmax(0,1fr);gap:22px}#studio-status{padding:8px;gap:8px}.direction-selector{max-width:200px}}
@media(max-width:900px){
 #app{padding:14px 28px 140px}header.top{padding-bottom:12px;margin-bottom:22px}
 nav.bottom,body.night nav.bottom{left:50%;right:auto;top:auto;bottom:max(14px,env(safe-area-inset-bottom));transform:translateX(-50%);width:calc(100% - 32px);max-width:600px;height:auto;min-height:76px;border-radius:28px;padding:7px;gap:3px;flex-direction:row;overflow:visible}
 nav.bottom button{flex:1 1 0;min-width:0;min-height:60px;flex-direction:column;gap:4px;padding:7px 2px;border-radius:21px;justify-content:center;font-size:11px;line-height:1.4;text-align:center}
 nav.bottom .nav-brand,nav.bottom .nav-foot{display:none}
 nav.bottom button .ic,nav.bottom button .ic svg{width:23px;height:23px}
 nav.bottom .liquid-selection{border-radius:21px}
 .ru-vi-home,.studio-grid{grid-template-columns:minmax(0,1fr) 220px;gap:22px}
 .ru-vi-route-levels{grid-template-columns:repeat(4,minmax(0,1fr))}.ru-vi-route-levels a{padding:12px 8px;gap:7px}.ru-vi-route-levels strong{font-size:12px}
}
@media(max-width:700px){
 #app{padding:12px 20px 135px}header.top{row-gap:10px;flex-wrap:wrap;min-height:70px}header.top h1{font-size:21px}.direction-selector{max-width:220px}
 .ru-vi-home{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px}.ru-vi-welcome,.ru-vi-next,.ru-vi-home-tools{grid-column:1/-1}.ru-vi-daily{grid-row:auto;grid-column:1}.ru-vi-progress{grid-row:auto;grid-column:2}.studio-grid{display:block}
 .ru-vi-welcome,.welcome-panel{padding:26px;min-height:295px;border-radius:28px}.ru-vi-welcome h3,.welcome-copy h3{font-size:46px}.ru-vi-welcome .hero-translation,.welcome-copy .hero-translation{font-size:18px!important}
 .ru-vi-daily,.ru-vi-progress,.daily-panel,.progress-panel{padding:18px}.ru-vi-daily h3,.ru-vi-progress h3{font-size:18px}.ru-vi-daily p,.ru-vi-progress p{font-size:13px}
 .ru-vi-route-levels{grid-template-columns:repeat(2,minmax(0,1fr));gap:5px;padding:6px;border-radius:24px}.ru-vi-route-levels strong{font-size:13px}.ru-vi-route-levels a{padding:12px;min-height:80px}.ru-vi-level-number{font-size:23px}
 .ru-vi-route-cover{display:grid;grid-template-columns:100px minmax(0,1fr);padding:12px;gap:14px;border-radius:26px;align-items:start}.ru-vi-route-cover .ru-vi-route-art{float:none;width:100px;min-height:100px;max-height:none;aspect-ratio:1;align-self:start;justify-self:start;margin:0;border-radius:18px}.ru-vi-route-cover>div:last-child{padding:3px 2px 4px 0}.ru-vi-route-cover h3{font-size:22px;margin-bottom:10px}.ru-vi-route-cover p{font-size:14px}.ru-vi-route-cover .ru-vi-route-grammar{clear:none}.ru-vi-route-cover:after{display:none}
 .ru-vi-route-layout{grid-template-columns:1fr;gap:24px}.ru-vi-route-detail{padding:22px}.ru-vi-route-quick{margin:4px 0 18px}
 .trail-detail{grid-template-columns:1fr;padding:18px;gap:14px;border-radius:26px}.trail-landscape{max-width:220px}.trail-chapter-copy{padding:0}.trail-chapter-copy h3{font-size:29px}
 .exercise-stage,.ru-vi-study-stage,.lesson-result,.ru-vi-lesson-complete{padding:22px;border-width:6px;border-radius:26px}.ru-vi-lesson-header{padding:14px 16px}.lesson-topbar{padding:12px}
 .profile-identity,.settings-panel,[data-direction=ru-vi] .settings-panel{padding:22px;border-radius:24px}.ru-vi-home-route{padding:18px;gap:16px}
}
@media(max-width:450px){
 #app{padding-inline:16px}header.top{display:grid;grid-template-columns:minmax(0,1fr) 44px 44px;gap:10px;margin-bottom:20px}header.top h1{grid-column:1;grid-row:1;min-width:0;margin:0}header.top h1 small{max-width:100%;font-size:11px}header.top .spacer{display:none}#sound-toggle{grid-column:2;grid-row:1}#night-toggle{grid-column:3;grid-row:1}body[data-direction=ru-vi] header.top h1{grid-column:1/3}#studio-status{order:0;grid-column:2/4;grid-row:2;justify-self:end;margin:0;background:transparent;box-shadow:none;padding:0;font-size:11px;min-height:44px}.status-pill{font-size:11px}.direction-selector{order:0;grid-column:1;grid-row:2;width:100%;max-width:100%;min-width:0;font-size:12px;padding-inline:10px}.icon-toggle{border-radius:16px}
 .welcome-panel,.ru-vi-welcome{min-height:270px;padding:22px;gap:8px}.welcome-copy h3,.ru-vi-welcome h3{font-size:37px}.welcome-copy .hero-translation,.ru-vi-welcome .hero-translation{font-size:16px!important}.welcome-panel{grid-template-columns:minmax(0,1fr) 106px}.mascot-orbit{width:106px}.ru-vi-home-bear{width:96px}.ru-vi-home-bear .slovo-bear{width:116px;height:150px}
 .ru-vi-next,.next-panel{padding:20px;border-radius:23px}.ru-vi-next .primary-btn{width:100%}.ru-vi-home-tools{gap:12px}.ru-vi-home-tools>section{padding:18px}.ru-vi-home-tools button{min-width:0;overflow-wrap:anywhere}
 .ru-vi-route-cover{grid-template-columns:76px minmax(0,1fr);gap:12px}.ru-vi-route-cover .ru-vi-route-art{width:76px;min-height:76px;border-radius:14px}.ru-vi-route-cover h3{font-size:19px}.ru-vi-route-cover>div:last-child{padding:0}.ru-vi-route-cover .ru-vi-route-limit{font-size:12px}.ru-vi-route-intro p{font-size:14px}
 .ru-vi-route-levels a{padding:10px 9px;gap:8px;min-height:84px}.ru-vi-route-levels strong{font-size:12px}.ru-vi-route-levels small{font-size:11px}.ru-vi-route-detail{padding:20px}.ru-vi-route-detail h3{font-size:23px}
 .exercise-stage,.ru-vi-study-stage,.lesson-result,.ru-vi-lesson-complete{padding:18px;border-width:5px;border-radius:24px}.exercise-stage h2{font-size:21px}.ru-vi-exercise>h3{font-size:23px}.exercise-actions .primary-btn{font-size:15px}.lesson-topbar>span{max-width:100px}
 .trail-region{gap:10px}.trail-destination{padding:12px 8px;border-radius:18px}.trail-destination small{font-size:12px}
 nav.bottom,body.night nav.bottom{width:calc(100% - 24px);bottom:max(12px,env(safe-area-inset-bottom));padding:6px;border-radius:26px}nav.bottom button{font-size:11px;min-height:59px;gap:5px}
 .page-heading{margin-bottom:16px}.page-heading h2{font-size:30px;margin:0}.dashboard-heading h2{font-size:25px}.profile-identity,.settings-panel,[data-direction=ru-vi] .settings-panel{padding:20px}.ru-vi-route-intro{grid-template-columns:1fr;gap:6px}.ru-vi-route-intro .text-btn{justify-self:start}.ru-vi-draft summary{padding-block:4px}
}
@media(max-width:350px){#app{padding-inline:12px}#studio-status{gap:5px}.ru-vi-welcome,.welcome-panel{padding:18px}.ru-vi-welcome h3,.welcome-copy h3{font-size:32px}.ru-vi-route-levels strong{font-size:11px}.ru-vi-route-levels a{gap:6px}.ru-vi-route-cover{grid-template-columns:60px minmax(0,1fr);gap:10px}.ru-vi-route-cover .ru-vi-route-art{width:60px;min-height:60px}.ru-vi-route-cover h3{font-size:18px}.exercise-stage,.ru-vi-study-stage{padding:15px}.ru-vi-home{gap:12px}.ru-vi-daily,.ru-vi-progress{padding:15px}nav.bottom button{font-size:10px}}
@supports not (backdrop-filter:blur(1px)){
 :root{--glass-fill:#e3f1ef;--glass-panel:#f5f9f4}body.night{--glass-fill:#21434b;--glass-panel:#243f46}
}
@media(prefers-reduced-transparency:reduce),(prefers-contrast:more){
 :root{--glass-fill:#edf5f2;--glass-panel:#fcfdf9;--glass-selected:linear-gradient(#d6eae3,#d6eae3);--glass-sheen:none}body.night{--glass-fill:#203e46;--glass-panel:#1c3940;--glass-selected:linear-gradient(#325f59,#325f59);--glass-sheen:none}
 nav.bottom,body.night nav.bottom,.welcome-panel,.ru-vi-welcome,.direction-welcome,.ru-vi-route-cover,.trail-detail,.ru-vi-route-levels,#modal,#modal-card{backdrop-filter:none;-webkit-backdrop-filter:none}body::before{background:var(--bg)}
}
@media(prefers-reduced-motion:reduce){.glass-ready .liquid-selection{transition:none!important}}
body[data-reduce-motion=true] .liquid-selection{transition:none!important}
@media(forced-colors:active){
 body::before{display:none}.liquid-selection{display:none}nav.bottom,body.night nav.bottom,.ru-vi-route-levels{background:Canvas;box-shadow:none;border:1px solid CanvasText;backdrop-filter:none}
 nav.bottom.glass-ready button.active,body.night nav.bottom.glass-ready button.active,.ru-vi-route-levels.glass-ready a[aria-current]{color:HighlightText;background:Highlight;outline:2px solid Highlight}
}