:root{
  --bl-bg:#f7f3ea;--bl-paper:#fffdf8;--bl-white:#fff;--bl-ink:#111111;--bl-soft:#38373d;--bl-muted:#78757c;--bl-line:rgba(17,17,17,.12);
  --bl-violet:#797ef6;--bl-violet-soft:#ececff;--bl-gold:#eabf4b;--bl-teal:#2dd4bf;--bl-dark:#090a0f;--bl-dark-2:#0d0f16;
  --bl-dark-line:rgba(255,255,255,.14);--bl-serif:'Playfair Display','Amiri',serif;--bl-sans:'Montserrat','Noto Naskh Arabic',system-ui,sans-serif;--bl-ar:'Noto Naskh Arabic','Amiri',serif;
  --bl-radius:28px;--bl-shadow:0 30px 90px rgba(17,17,17,.08);--bl-max:1320px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--bl-bg)}body{margin:0;background:var(--bl-bg);color:var(--bl-ink);font-family:var(--bl-sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:1rem;top:1rem;z-index:9999;background:#fff;padding:.75rem 1rem}.bl-container{width:min(calc(100% - 54px),var(--bl-max));margin-inline:auto}.bl-site[dir=rtl] [data-ar],.blr-app[dir=rtl] [data-ar]{font-family:var(--bl-ar)}.bl-site[dir=ltr] [data-en],.blr-app[dir=ltr] [data-en]{font-family:var(--bl-sans)}

/* shared navigation */
.bl-nav{position:fixed;top:0;left:0;right:0;z-index:50;height:82px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 clamp(18px,3vw,46px);background:rgba(247,243,234,.82);backdrop-filter:blur(20px);border-bottom:1px solid rgba(17,17,17,.06)}.bl-brand{display:inline-flex;align-items:center;gap:11px;width:max-content}.bl-brand-ar{font-family:var(--bl-ar);font-size:29px;font-weight:700;line-height:1}.bl-brand-rule{display:block;width:34px;height:1px;background:var(--bl-ink);opacity:.48}.bl-brand-en{font-size:10px;font-weight:700;letter-spacing:.22em}.bl-nav-links{display:flex;align-items:center;gap:27px;font-size:12px}.bl-nav-links a{opacity:.67;transition:.25s ease}.bl-nav-links a:hover{opacity:1}.bl-nav-actions{display:flex;justify-content:flex-end;align-items:center;gap:9px}.bl-icon-button{width:38px;height:38px;border-radius:50%;border:1px solid var(--bl-line);background:transparent;color:inherit;display:grid;place-items:center;cursor:pointer;font-size:11px}.bl-enter{display:inline-flex;align-items:center;gap:22px;border:1px solid var(--bl-ink);border-radius:999px;padding:14px 18px 14px 22px;font-weight:600;font-size:12px;transition:.28s ease;background:var(--bl-ink);color:white}.bl-enter:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(17,17,17,.10)}.bl-enter-small{padding:10px 14px 10px 16px}.bl-arrow{display:grid;place-items:center;width:25px;height:25px;border-radius:50%;background:rgba(255,255,255,.12)}.bl-text-link{display:inline-flex;gap:11px;align-items:center;font-size:12px;font-weight:600}.bl-section-index{font-size:10px;letter-spacing:.14em;text-transform:uppercase;opacity:.52;margin:0}.bl-live{display:flex;align-items:center;gap:8px}.bl-live i{width:7px;height:7px;border-radius:50%;background:var(--bl-teal);box-shadow:0 0 0 6px rgba(45,212,191,.11)}

/* hero */
.bl-hero{min-height:100vh;position:relative;overflow:hidden;padding:155px 0 95px;display:flex;align-items:center}.bl-hero-grid{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(460px,.96fr);gap:86px;align-items:center;position:relative;z-index:2}.bl-kicker{display:flex;align-items:center;gap:10px;font-size:12px;font-weight:600;margin-bottom:28px}.bl-kicker-dot{width:9px;height:9px;border-radius:50%;background:var(--bl-teal);box-shadow:0 0 0 7px rgba(45,212,191,.12)}.bl-hero h1{font-family:var(--bl-ar);font-size:clamp(56px,6.4vw,100px);line-height:.98;letter-spacing:-.035em;font-weight:500;margin:0;max-width:9ch}.bl-hero h1 span,.bl-hero h1 em{display:block}.bl-hero h1 em{font-style:normal;color:var(--bl-violet);margin-top:10px}.bl-hero-lede{max-width:710px;font-family:var(--bl-ar);font-size:20px;line-height:1.95;color:#3e3b42;margin:34px 0}.bl-hero-actions{display:flex;align-items:center;gap:24px}.bl-orbit{position:absolute;inset:0;pointer-events:none}.bl-orbit>span{position:absolute;border:1px solid rgba(121,126,246,.13);border-radius:50%}.bl-orbit>span:nth-child(1){width:780px;height:780px;top:16%;right:-290px}.bl-orbit>span:nth-child(2){width:1120px;height:1120px;top:-360px;right:-90px;border-color:rgba(234,191,75,.10)}.bl-orbit>i{position:absolute;width:8px;height:8px;border-radius:50%;animation:blFloat 6s ease-in-out infinite}.bl-orbit>i:nth-of-type(1){right:12%;top:28%;background:var(--bl-violet)}.bl-orbit>i:nth-of-type(2){right:28%;top:70%;background:var(--bl-gold);animation-delay:1.5s}.bl-orbit>i:nth-of-type(3){right:5%;top:56%;background:var(--bl-teal);animation-delay:3s}
.bl-hero-presence{background:rgba(255,255,255,.69);border:1px solid rgba(17,17,17,.08);border-radius:36px;padding:25px 26px 27px;box-shadow:var(--bl-shadow);backdrop-filter:blur(26px);transform:rotate(-1deg);min-height:500px;display:flex;flex-direction:column;position:relative;overflow:hidden}.bl-hero-presence:before{content:'';position:absolute;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(121,126,246,.12),transparent 70%);top:110px;left:50%;transform:translateX(-50%)}.bl-presence-top{display:flex;justify-content:space-between;align-items:center;font-size:10px;letter-spacing:.12em;text-transform:uppercase;border-bottom:1px solid var(--bl-line);padding-bottom:18px}.bl-live b{font-weight:500;letter-spacing:0}.bl-presence-face{width:156px;height:156px;margin:42px auto 28px;position:relative;display:grid;place-items:center}.bl-presence-face>span{width:92px;height:92px;border-radius:50%;display:grid;place-items:center;background:var(--bl-dark);color:white;font-family:var(--bl-ar);font-size:44px;font-weight:700;position:relative;z-index:2;box-shadow:0 12px 40px rgba(9,10,15,.18)}.bl-presence-ring{position:absolute;inset:18px;border:1px solid rgba(121,126,246,.22);border-radius:50%;animation:blPulse 3.2s ease-in-out infinite}.bl-presence-ring.second{inset:0;border-color:rgba(45,212,191,.16);animation-delay:1.1s}.bl-presence-copy{text-align:center;max-width:420px;margin:0 auto}.bl-presence-copy small{display:block;font-size:10px;color:var(--bl-muted);margin-bottom:8px}.bl-presence-copy strong{display:block;font-family:var(--bl-ar);font-size:25px;line-height:1.55;font-weight:600}.bl-wave,.bl-big-wave,.blr-voice-wave{display:flex;align-items:center;justify-content:center;gap:4px}.bl-wave{height:62px;margin-top:26px}.bl-wave i,.bl-big-wave i,.blr-voice-wave i{display:block;width:3px;border-radius:999px;background:var(--bl-violet);transform-origin:center}.bl-wave i{height:calc(10px + (var(--i,1) * 1px));animation:blWave 1.7s ease-in-out infinite}.bl-wave i:nth-child(3n){height:28px;animation-delay:.18s}.bl-wave i:nth-child(4n){height:38px;animation-delay:.32s}.bl-wave i:nth-child(5n){height:20px;animation-delay:.44s}.bl-presence-foot{margin-top:auto;display:flex;justify-content:center;gap:10px;font-size:9px;color:#8b898f;letter-spacing:.08em;text-transform:uppercase}

/* black manifesto */
.bl-manifesto{background:var(--bl-dark);color:white;padding:124px 0}.bl-manifesto-grid{display:grid;grid-template-columns:220px 1fr;gap:64px}.bl-big-statement{font-family:var(--bl-ar);font-size:clamp(42px,5vw,74px);line-height:1.25;max-width:15ch;margin:0}.bl-body-large{font-family:var(--bl-ar);font-size:20px;line-height:2;max-width:790px;color:#c9cad0;margin:40px 0 0}

/* generic section */
.bl-teacher,.bl-evidence{padding:132px 0;background:var(--bl-paper)}.bl-section-head{display:grid;grid-template-columns:220px minmax(0,1fr);gap:28px 42px;align-items:start}.bl-section-head h2{grid-column:2;font-family:var(--bl-ar);font-size:clamp(40px,5vw,72px);line-height:1.22;font-weight:500;letter-spacing:-.025em;margin:0;max-width:16ch}.bl-section-head>p:not(.bl-section-index){grid-column:2;font-family:var(--bl-ar);font-size:18px;line-height:2;color:#625f65;max-width:770px;margin:0}

/* teacher */
.bl-teacher-grid{margin-top:78px;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--bl-line);border-bottom:1px solid var(--bl-line)}.bl-teacher-grid article{padding:28px 24px 35px;min-height:260px;border-inline-start:1px solid var(--bl-line)}.bl-teacher-grid article:first-child{border-inline-start:0}.bl-teacher-grid article>span{font-size:10px;color:#a19fa5}.bl-teacher-grid h3{font-family:var(--bl-ar);font-size:25px;line-height:1.5;margin:56px 0 13px;font-weight:600}.bl-teacher-grid p{font-family:var(--bl-ar);font-size:15px;line-height:1.9;color:#77747a;margin:0}

/* room story */
.bl-room-story{padding:135px 0;background:#f1ede4;overflow:hidden}.bl-room-story-grid{display:grid;grid-template-columns:.88fr 1.12fr;gap:80px;align-items:center}.bl-room-story-copy h2,.bl-modality-copy h2{font-family:var(--bl-ar);font-size:clamp(42px,5.2vw,74px);line-height:1.2;font-weight:500;letter-spacing:-.025em;margin:25px 0 26px}.bl-room-story-copy p:not(.bl-section-index),.bl-modality-copy>p:not(.bl-section-index){font-family:var(--bl-ar);font-size:18px;line-height:2;color:#5c5960;max-width:690px}.bl-room-orbit{height:590px;position:relative;display:grid;place-items:center}.bl-room-orbit:before,.bl-room-orbit:after{content:'';position:absolute;border:1px solid rgba(17,17,17,.11);border-radius:50%}.bl-room-orbit:before{width:430px;height:430px}.bl-room-orbit:after{width:560px;height:560px;border-style:dashed;opacity:.55}.bl-room-core{position:relative;z-index:3;width:180px;height:180px;border-radius:50%;background:var(--dark,var(--bl-dark));color:white;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;box-shadow:0 25px 60px rgba(17,17,17,.16)}.bl-room-core span{font-family:var(--bl-ar);font-size:45px}.bl-room-core strong{font-size:10px;letter-spacing:.12em}.bl-room-orbit .cap{position:absolute;padding:12px 16px;border-radius:999px;background:var(--bl-white);border:1px solid var(--bl-line);font-size:9px;font-weight:700;letter-spacing:.12em;box-shadow:0 12px 34px rgba(17,17,17,.05)}.bl-room-orbit .c1{top:8%;left:45%}.bl-room-orbit .c2{top:24%;right:6%}.bl-room-orbit .c3{bottom:24%;right:4%}.bl-room-orbit .c4{bottom:7%;left:44%}.bl-room-orbit .c5{bottom:26%;left:5%}.bl-room-orbit .c6{top:24%;left:4%}

/* modality sections */
.bl-voice,.bl-video{padding:138px 0;background:var(--bl-paper)}.bl-video{background:var(--bl-dark);color:white}.bl-modality-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:92px;align-items:center}.bl-modality-grid.reverse{grid-template-columns:.9fr 1.1fr}.bl-video .bl-modality-copy>p:not(.bl-section-index){color:#c5c7cd}.bl-modality-visual{border-radius:34px;border:1px solid var(--bl-line);background:var(--bl-white);min-height:530px;box-shadow:var(--bl-shadow);padding:30px}.bl-voice-visual{display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}.bl-voice-status{display:flex;align-items:center;gap:10px;font-family:var(--bl-ar);font-size:16px}.bl-voice-status i{width:9px;height:9px;border-radius:50%;background:var(--bl-teal);box-shadow:0 0 0 8px rgba(45,212,191,.12)}.bl-big-wave{height:190px;width:90%;gap:5px;margin:28px 0}.bl-big-wave i{width:4px;background:linear-gradient(180deg,var(--bl-violet),#a3a6ff);height:30px;animation:blWave 1.8s ease-in-out infinite}.bl-big-wave i:nth-child(3n){height:84px}.bl-big-wave i:nth-child(4n){height:132px}.bl-big-wave i:nth-child(5n){height:62px}.bl-big-wave i:nth-child(7n){height:110px}.bl-voice-steps{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;font-size:8px;letter-spacing:.09em;text-transform:uppercase;color:#85838a}.bl-voice-steps b{font-weight:400;color:#bbb}.bl-privacy-chip{margin-top:28px;padding:11px 14px;border-radius:999px;background:#eefaf7;color:#24796c;font-family:var(--bl-ar);font-size:12px}.bl-clean-list{list-style:none;margin:32px 0 0;padding:0;border-top:1px solid var(--bl-line)}.bl-clean-list li{font-family:var(--bl-ar);font-size:15px;padding:13px 0;border-bottom:1px solid var(--bl-line)}.bl-clean-list li:before{content:'·';color:var(--bl-violet);font-weight:700;margin-inline-end:10px}
.bl-video-player{border:1px solid rgba(255,255,255,.12);border-radius:32px;padding:18px;background:#11131a;box-shadow:0 30px 80px rgba(0,0,0,.35)}.bl-video-frame{height:390px;border-radius:22px;background:linear-gradient(145deg,#232631,#15171f);position:relative;overflow:hidden}.bl-video-shape{position:absolute;border-radius:50%;filter:blur(.1px)}.bl-video-shape.one{width:240px;height:240px;background:rgba(121,126,246,.38);left:14%;top:16%}.bl-video-shape.two{width:220px;height:220px;background:rgba(45,212,191,.28);right:12%;bottom:9%;mix-blend-mode:screen}.bl-video-caption{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);width:82%;background:rgba(9,10,15,.72);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.12);padding:12px 16px;border-radius:12px;text-align:center;font-family:var(--bl-ar);font-size:15px}.bl-video-play{position:absolute;left:22px;top:20px;width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.12);display:grid;place-items:center}.bl-video-meta{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:13px;padding:18px 2px 4px;font-size:9px;color:#9b9da5}.bl-video-track{height:3px;background:#2e313a;border-radius:20px;position:relative}.bl-video-track i{display:block;height:100%;background:var(--bl-violet)}.bl-video-track b{position:absolute;top:50%;transform:translate(-50%,-50%);width:8px;height:8px;border-radius:50%;background:var(--bl-gold)}.bl-video-tutor{display:flex;gap:12px;align-items:center;margin-top:18px;padding:16px;border-radius:16px;background:#0b0d13;border:1px solid rgba(255,255,255,.08)}.bl-mini-presence{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--bl-violet);color:white;font-family:var(--bl-ar);font-weight:700;flex:none}.bl-video-tutor div{display:flex;flex-direction:column;gap:4px}.bl-video-tutor small{font-size:8px;color:#7f818a}.bl-video-tutor strong{font-family:var(--bl-ar);font-size:14px;font-weight:500}.bl-media-flow{display:flex;align-items:center;flex-wrap:wrap;gap:9px;margin-top:30px;font-size:8px;letter-spacing:.11em}.bl-media-flow span{padding:8px 11px;border:1px solid rgba(255,255,255,.14);border-radius:999px}.bl-media-flow b{color:#666;font-weight:400}

/* evidence */
.bl-evidence-path{margin-top:72px;display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--bl-line);border-bottom:1px solid var(--bl-line)}.bl-evidence-path article{min-height:150px;padding:24px 18px;border-inline-start:1px solid var(--bl-line)}.bl-evidence-path article:first-child{border-inline-start:0}.bl-evidence-path span{font-size:9px;color:#aaa}.bl-evidence-path strong{display:block;font-family:var(--bl-ar);font-size:18px;line-height:1.6;margin-top:38px}.bl-false-mastery{margin-top:68px;background:var(--bl-dark);color:white;border-radius:30px;padding:36px 40px;display:grid;grid-template-columns:180px 1fr 1.25fr;gap:26px;align-items:center}.bl-false-mastery>span{font-family:var(--bl-ar);font-size:13px;color:#aaa}.bl-false-mastery>strong{font-family:var(--bl-sans);font-size:26px;letter-spacing:.08em;color:var(--bl-gold)}.bl-false-mastery>p{font-family:var(--bl-ar);font-size:16px;line-height:1.7;color:#d0d1d5;margin:0}

/* trust/footer */
.bl-trust{background:var(--bl-dark);color:white;padding:132px 0}.bl-trust .bl-section-head h2{color:white}.bl-trust-grid{display:grid;gap:78px}.bl-trust-lines{border-top:1px solid var(--bl-dark-line)}.bl-trust-lines>div{display:grid;grid-template-columns:90px 1fr;align-items:center;border-bottom:1px solid var(--bl-dark-line);padding:24px 0}.bl-trust-lines span{color:#777}.bl-trust-lines p{font-family:var(--bl-ar);font-size:19px;margin:0;color:#ddd}.bl-final-cta{padding:145px 0;background:var(--bl-violet);color:white}.bl-final-cta-inner{text-align:center;display:flex;flex-direction:column;align-items:center}.bl-presence-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:50%;background:var(--bl-ink);color:white;font-family:var(--bl-ar);font-size:20px;font-weight:700;flex:none}.bl-presence-mark-large{width:58px;height:58px;background:white;color:var(--bl-violet);font-size:30px}.bl-final-cta p{font-family:var(--bl-ar);font-size:15px;margin:25px 0}.bl-final-cta h2{font-family:var(--bl-ar);font-size:clamp(46px,6vw,84px);line-height:1.15;max-width:14ch;margin:0 auto 38px;font-weight:500}.bl-enter-light{background:white;color:var(--bl-ink);border-color:white}.bl-enter-light .bl-arrow{background:#eee}.bl-footer{background:var(--bl-dark);color:white;padding:32px 0}.bl-footer-inner{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:30px}.bl-brand-footer .bl-brand-rule{background:white}.bl-footer p{margin:0;color:#9ea0a8;font-family:var(--bl-ar);text-align:center;font-size:12px}.bl-footer-inner>span{font-size:10px;color:#777}

/* Room application */
.blr-app{min-height:100vh;background:#f4f1e9;color:var(--bl-ink)}.blr-shell{min-height:100vh;display:grid;grid-template-rows:72px 1fr auto}.blr-header{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 22px;border-bottom:1px solid var(--bl-line);background:rgba(247,243,234,.92);backdrop-filter:blur(18px);position:relative;z-index:20}.blr-brand{transform:scale(.9);transform-origin:right center}.blr-breadcrumb{text-align:center}.blr-breadcrumb small{display:block;font-size:8px;letter-spacing:.16em;color:#999}.blr-breadcrumb strong{font-family:var(--bl-ar);font-size:13px}.blr-header-actions{justify-self:end;display:flex;gap:7px}.blr-session{width:38px;height:38px;border:1px solid var(--bl-line);border-radius:50%;background:transparent;color:inherit}.blr-body{min-height:0;display:grid;grid-template-columns:90px minmax(0,1fr) 268px}.blr-left{border-left:1px solid var(--bl-line);padding:24px 13px;display:flex;flex-direction:column;background:#f7f3ea}.blr-progress{padding:0 6px 20px;border-bottom:1px solid var(--bl-line)}.blr-progress span{display:block;font-size:24px;font-weight:600}.blr-progress small{font-size:9px;color:#999}.blr-left nav{display:flex;flex-direction:column;gap:8px;margin-top:25px}.blr-left nav button{border:0;background:transparent;padding:11px 5px;color:#aaa;display:flex;flex-direction:column;align-items:center;gap:6px;font-family:var(--bl-ar);font-size:10px;cursor:pointer}.blr-left nav i{width:8px;height:8px;border-radius:50%;border:1px solid #bbb}.blr-left nav button.is-active{color:var(--bl-ink)}.blr-left nav button.is-active i{background:var(--bl-violet);border-color:var(--bl-violet);box-shadow:0 0 0 6px rgba(121,126,246,.1)}.blr-connection{margin-top:auto;display:flex;align-items:center;justify-content:center;gap:6px;font-size:9px;color:#888}.blr-connection i{width:6px;height:6px;background:var(--bl-teal);border-radius:50%}.blr-canvas{background:var(--bl-white);padding:28px clamp(28px,5vw,78px) 24px;display:flex;flex-direction:column;min-height:calc(100vh - 72px);position:relative;overflow:hidden}.blr-topline{display:flex;justify-content:space-between;gap:20px;align-items:center}.blr-goal{display:flex;align-items:center;gap:16px;font-family:var(--bl-ar)}.blr-goal small{font-size:9px;color:#999}.blr-goal span{font-size:12px}.blr-teacher-state{display:flex;align-items:center;gap:8px}.blr-teacher-state small{font-family:var(--bl-ar);font-size:10px;color:#8a878d}.blr-teacher-dot{width:7px;height:7px;border-radius:50%;background:var(--bl-teal);box-shadow:0 0 0 6px rgba(45,212,191,.1)}.blr-mode-panel{display:none;min-height:0;flex:1;position:relative}.blr-mode-panel.is-active{display:flex;flex-direction:column;animation:blFade .4s ease both}.blr-dialogue{margin:auto 0;max-width:860px}.blr-tutor-line{display:flex;align-items:center;gap:12px;margin-bottom:42px}.blr-tutor-line div{display:flex;flex-direction:column}.blr-tutor-line small{font-size:8px;color:#999}.blr-tutor-line p{font-family:var(--bl-ar);margin:2px 0 0;font-size:14px}.blr-dialogue h1{font-family:var(--bl-ar);font-size:clamp(38px,5vw,68px);line-height:1.35;font-weight:500;max-width:12ch;margin:0}.blr-prompt-note{font-family:var(--bl-ar);font-size:14px;color:#777;margin:18px 0 0}
.blr-whiteboard{position:relative;height:480px;margin:auto 0;display:flex;align-items:center;justify-content:center;gap:55px}.blr-whiteboard svg{position:absolute;inset:0;width:100%;height:100%;z-index:0}.blr-whiteboard path{fill:none;stroke:rgba(17,17,17,.10);stroke-width:2;stroke-dasharray:4 9}.wb-node{width:110px;height:110px;border-radius:50%;display:grid;place-items:center;font-family:var(--bl-ar);font-weight:700;position:relative;z-index:2}.wb-node.violet{background:rgba(121,126,246,.15);color:#5a60df}.wb-node.dark{background:var(--bl-dark);color:white}.wb-node.teal{background:rgba(45,212,191,.17);color:#177c70}.blr-whiteboard>i{width:65px;height:1px;background:#bbb;position:relative;z-index:2}.blr-inline-teacher{display:flex;align-items:center;gap:10px;padding:14px 16px;border:1px solid var(--bl-line);border-radius:15px;max-width:600px}.blr-inline-teacher p{font-family:var(--bl-ar);font-size:13px;margin:0}.blr-video-room{margin:auto 0}.blr-video-screen{height:min(52vh,460px);background:linear-gradient(145deg,#1d2029,#0e1016);border-radius:22px;position:relative;overflow:hidden}.blr-video-abstract{position:absolute;border-radius:50%}.blr-video-abstract.a{width:300px;height:300px;background:rgba(121,126,246,.42);left:14%;top:12%}.blr-video-abstract.b{width:260px;height:260px;background:rgba(45,212,191,.28);right:14%;bottom:8%;mix-blend-mode:screen}.blr-video-pause{position:absolute;left:20px;top:20px;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:rgba(255,255,255,.10);color:white}.blr-video-subtitle{position:absolute;left:50%;transform:translateX(-50%);bottom:24px;width:min(760px,84%);padding:10px 14px;border-radius:10px;background:rgba(9,10,15,.72);border:1px solid rgba(255,255,255,.10);color:white;text-align:center;font-family:var(--bl-ar);font-size:14px}.blr-video-controls{display:grid;grid-template-columns:36px auto 1fr auto 38px;align-items:center;gap:10px;margin-top:12px;font-size:9px;color:#777}.blr-video-controls button{border:1px solid var(--bl-line);background:transparent;border-radius:50%;width:34px;height:34px;color:inherit}.blr-video-track{height:3px;background:#e1ded7;border-radius:999px;position:relative}.blr-video-track i{display:block;width:41%;height:100%;background:var(--bl-violet)}.blr-video-track b{position:absolute;top:50%;transform:translate(-50%,-50%);width:8px;height:8px;border-radius:50%;background:var(--bl-gold)}.blr-video-track .m1{left:41%}.blr-video-track .m2{left:68%}.blr-video-intervention{margin-top:14px;display:flex;gap:12px;align-items:center;padding:13px 14px;border:1px solid var(--bl-line);border-radius:14px}.blr-video-intervention div{display:flex;flex-direction:column;gap:3px}.blr-video-intervention small{font-size:8px;color:#999}.blr-video-intervention strong{font-family:var(--bl-ar);font-size:13px}.blr-sim{margin:auto 0}.blr-sim-chart{height:320px;display:flex;align-items:end;gap:12px;border-bottom:1px solid var(--bl-line);padding:20px 8px}.blr-sim-chart i{flex:1;min-width:12px;background:linear-gradient(180deg,var(--bl-violet),rgba(121,126,246,.22));border-radius:7px 7px 0 0}.blr-sim label{display:grid;grid-template-columns:150px 1fr 56px;gap:15px;align-items:center;margin-top:28px;font-family:var(--bl-ar);font-size:12px}.blr-sim input{accent-color:var(--bl-violet)}.blr-code{margin:auto 0;border:1px solid var(--bl-line);border-radius:18px;overflow:hidden;background:#0d0f16;color:#e9e9ef}.blr-code-head{display:flex;justify-content:space-between;align-items:center;padding:11px 14px;border-bottom:1px solid rgba(255,255,255,.09);font-size:9px;color:#8e919b}.blr-code-head button{border:0;background:var(--bl-violet);color:white;padding:7px 12px;border-radius:999px;font-family:var(--bl-ar)}.blr-code pre{margin:0;padding:28px;min-height:280px;overflow:auto;font:13px/1.9 ui-monospace,SFMono-Regular,Menlo,monospace}.blr-code code span{color:#aeb1ff}.blr-code-output{padding:14px 28px;border-top:1px solid rgba(255,255,255,.09);color:var(--bl-teal);font:12px ui-monospace,SFMono-Regular,Menlo,monospace}
.blr-composer{margin-top:18px;border:1px solid var(--bl-line);border-radius:22px;padding:11px 12px 11px 16px;display:flex;align-items:end;gap:12px;box-shadow:0 12px 34px rgba(17,17,17,.045);position:relative;z-index:5}.blr-composer textarea{border:0;outline:none;background:transparent;resize:none;flex:1;font-family:var(--bl-ar);font-size:15px;min-height:36px;max-height:130px;color:inherit}.blr-compose-actions{display:flex;gap:8px}.blr-compose-actions button{width:38px;height:38px;border-radius:50%;cursor:pointer}.blr-voice{border:1px solid var(--bl-line);background:white;color:var(--bl-violet);display:grid;place-items:center}.mic-dot{width:10px;height:10px;border:2px solid currentColor;border-radius:50%;position:relative}.mic-dot:after{content:'';position:absolute;width:1px;height:7px;background:currentColor;left:50%;top:8px}.blr-send{border:0;background:var(--bl-ink);color:white}.blr-right{border-right:1px solid var(--bl-line);padding:26px 20px;background:#faf8f3}.blr-teacher-card{display:flex;gap:10px;align-items:center;padding-bottom:20px;margin-bottom:22px;border-bottom:1px solid var(--bl-line);position:relative}.blr-teacher-card div{display:flex;flex-direction:column}.blr-teacher-card small{font-size:8px;color:#999}.blr-teacher-card strong{font-family:var(--bl-ar);font-size:12px}.blr-teacher-card>i{margin-inline-start:auto;width:7px;height:7px;border-radius:50%;background:var(--bl-teal)}.blr-state-block{padding-bottom:22px;margin-bottom:22px;border-bottom:1px solid var(--bl-line)}.blr-state-block small{display:block;font-size:8px;color:#999;margin-bottom:8px}.blr-state-block strong{font-family:var(--bl-ar);font-size:16px}.blr-state-meter{height:4px;background:#e2ded6;border-radius:10px;margin-top:13px;overflow:hidden}.blr-state-meter i{display:block;width:58%;height:100%;background:var(--bl-violet)}.blr-state-block ul{list-style:none;padding:0;margin:0}.blr-state-block li{font-family:var(--bl-ar);font-size:11px;padding:7px 0;color:#999}.blr-state-block li:before{content:'○';display:inline-block;margin-inline-end:8px}.blr-state-block li.done{color:#277e71}.blr-state-block li.done:before{content:'●';color:var(--bl-teal)}.blr-next{position:relative;background:var(--bl-dark);color:white;border-radius:16px;padding:17px;margin-top:34px}.blr-next small{display:block;color:#888;font-size:8px}.blr-next strong{font-family:var(--bl-ar);font-size:12px}.blr-next span{position:absolute;left:16px;bottom:16px}.blr-demo-note{text-align:center;font-family:var(--bl-ar);font-size:10px;padding:7px 12px;background:#fff8d8;color:#76641e;border-top:1px solid rgba(234,191,75,.25)}

/* voice dock */
.blr-voice-dock{position:absolute;left:50%;bottom:92px;transform:translate(-50%,18px);width:min(560px,calc(100% - 36px));background:rgba(9,10,15,.96);color:white;border:1px solid rgba(255,255,255,.10);border-radius:24px;padding:18px;box-shadow:0 28px 80px rgba(0,0,0,.28);backdrop-filter:blur(20px);opacity:0;pointer-events:none;transition:.3s ease;z-index:15}.blr-voice-dock.is-open{opacity:1;pointer-events:auto;transform:translate(-50%,0)}.blr-voice-head{display:flex;justify-content:space-between;align-items:center}.blr-voice-head>div{display:flex;align-items:center;gap:10px}.blr-voice-head>div>div{display:flex;flex-direction:column}.blr-voice-head small{font-size:8px;color:#888}.blr-voice-head strong{font-family:var(--bl-ar);font-size:13px}.blr-voice-head>button{border:0;background:transparent;color:#aaa;font-size:24px;cursor:pointer}.blr-voice-wave{height:80px;margin:10px 0}.blr-voice-wave i{height:13px;background:var(--bl-violet);animation:none}.blr-voice-dock[data-state="listening"] .blr-voice-wave i,.blr-voice-dock[data-state="speaking"] .blr-voice-wave i{animation:blWave 1.4s ease-in-out infinite}.blr-voice-dock[data-state="listening"] .blr-voice-wave i:nth-child(3n),.blr-voice-dock[data-state="speaking"] .blr-voice-wave i:nth-child(4n){height:40px}.blr-voice-dock[data-state="thinking"] .blr-voice-wave i{height:4px;animation:blThink 1.1s ease-in-out infinite}.blr-voice-dock p{font-family:var(--bl-ar);font-size:11px;line-height:1.7;color:#9fa1aa;margin:0 0 14px}.blr-voice-main{width:100%;border:0;border-radius:999px;background:white;color:var(--bl-dark);padding:11px 14px;font-family:var(--bl-ar);font-weight:600;cursor:pointer}

/* runtime mount */
.blr-runtime-mount{min-height:100vh;background:var(--bl-paper)}

/* dark mode */
body.bl-dark{--bl-bg:#090a0f;--bl-paper:#0d0f16;--bl-white:#11131a;--bl-ink:#f1f1f3;--bl-soft:#d7d8dd;--bl-muted:#a4a6ad;--bl-line:rgba(255,255,255,.13);background:var(--bl-bg);color:var(--bl-ink)}body.bl-dark .bl-nav{background:rgba(9,10,15,.84);border-color:rgba(255,255,255,.08)}body.bl-dark .bl-brand-rule{background:white}body.bl-dark .bl-hero-lede,body.bl-dark .bl-section-head>p:not(.bl-section-index),body.bl-dark .bl-room-story-copy p:not(.bl-section-index),body.bl-dark .bl-modality-copy>p:not(.bl-section-index){color:#b8bac1}body.bl-dark .bl-hero-presence,body.bl-dark .bl-modality-visual{background:#11131a;border-color:rgba(255,255,255,.09)}body.bl-dark .bl-room-story{background:#0b0d13}body.bl-dark .bl-room-orbit .cap{background:#11131a}body.bl-dark .bl-teacher,body.bl-dark .bl-voice,body.bl-dark .bl-evidence,body.bl-dark .blr-canvas{background:#11131a}body.bl-dark .blr-app,body.bl-dark .blr-left{background:#090a0f}body.bl-dark .blr-header{background:rgba(9,10,15,.91)}body.bl-dark .blr-right{background:#0d0f16}body.bl-dark .blr-composer{background:#0d0f16}body.bl-dark .blr-voice{background:#11131a}body.bl-dark .blr-video-track{background:#333640}body.bl-dark .blr-whiteboard path{stroke:rgba(255,255,255,.11)}

[data-reveal]{opacity:1;transform:none}[data-reveal].is-visible{animation:blReveal .72s ease both}[data-delay="1"].is-visible{animation-delay:.12s}@keyframes blReveal{from{opacity:.01;transform:translateY(14px)}to{opacity:1;transform:none}}@keyframes blFade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@keyframes blFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}@keyframes blPulse{0%,100%{transform:scale(.95);opacity:.55}50%{transform:scale(1.08);opacity:1}}@keyframes blWave{0%,100%{transform:scaleY(.45);opacity:.45}50%{transform:scaleY(1);opacity:1}}@keyframes blThink{0%,100%{opacity:.25;transform:translateY(0)}50%{opacity:1;transform:translateY(-6px)}}

@media (max-width:1100px){.bl-nav{grid-template-columns:1fr auto}.bl-nav-links{display:none}.bl-hero-grid,.bl-modality-grid,.bl-modality-grid.reverse,.bl-room-story-grid{grid-template-columns:1fr;gap:56px}.bl-hero-presence{max-width:760px}.bl-teacher-grid{grid-template-columns:repeat(2,1fr)}.bl-teacher-grid article:nth-child(3){border-inline-start:0;border-top:1px solid var(--bl-line)}.bl-teacher-grid article:nth-child(4){border-top:1px solid var(--bl-line)}.bl-evidence-path{grid-template-columns:repeat(3,1fr)}.bl-evidence-path article:nth-child(4){border-inline-start:0;border-top:1px solid var(--bl-line)}.bl-evidence-path article:nth-child(4),.bl-evidence-path article:nth-child(5){border-top:1px solid var(--bl-line)}.bl-section-head{grid-template-columns:160px 1fr}.bl-manifesto-grid{grid-template-columns:160px 1fr}.blr-body{grid-template-columns:74px 1fr}.blr-right{display:none}}
@media (max-width:760px){.bl-container{width:min(calc(100% - 28px),var(--bl-max))}.bl-nav{height:68px;padding:0 14px}.bl-brand-ar{font-size:23px}.bl-brand-rule{width:22px}.bl-brand-en{font-size:8px}.bl-nav-actions .bl-icon-button:nth-child(2){display:none}.bl-enter-small{padding:9px 12px}.bl-enter-small .bl-arrow{display:none}.bl-hero{padding:112px 0 70px;min-height:auto}.bl-hero h1{font-size:56px}.bl-hero-lede{font-size:17px}.bl-hero-actions{flex-wrap:wrap}.bl-hero-presence{min-height:450px;padding:20px}.bl-presence-copy strong{font-size:22px}.bl-manifesto,.bl-teacher,.bl-room-story,.bl-voice,.bl-video,.bl-evidence,.bl-trust{padding:88px 0}.bl-manifesto-grid,.bl-section-head{grid-template-columns:1fr}.bl-section-head h2,.bl-section-head>p:not(.bl-section-index){grid-column:1}.bl-big-statement{font-size:42px}.bl-body-large{font-size:17px}.bl-teacher-grid{grid-template-columns:1fr}.bl-teacher-grid article{border-inline-start:0;border-top:1px solid var(--bl-line)}.bl-teacher-grid article:first-child{border-top:0}.bl-room-orbit{height:440px}.bl-room-orbit:before{width:300px;height:300px}.bl-room-orbit:after{width:410px;height:410px}.bl-room-core{width:140px;height:140px}.bl-room-orbit .cap{font-size:7px;padding:8px 10px}.bl-modality-visual{min-height:420px;padding:20px}.bl-big-wave{height:150px}.bl-video-frame{height:300px}.bl-evidence-path{grid-template-columns:1fr}.bl-evidence-path article{border-inline-start:0;border-top:1px solid var(--bl-line)}.bl-evidence-path article:first-child{border-top:0}.bl-false-mastery{grid-template-columns:1fr;padding:28px}.bl-footer-inner{grid-template-columns:1fr;text-align:center}.bl-brand-footer{margin:auto}.blr-header{grid-template-columns:1fr auto;padding:0 13px}.blr-breadcrumb{display:none}.blr-body{grid-template-columns:1fr}.blr-left{display:none}.blr-canvas{min-height:calc(100vh - 72px);padding:22px 16px 18px}.blr-topline{align-items:flex-start}.blr-goal{flex-direction:column;align-items:flex-start;gap:2px}.blr-dialogue h1{font-size:43px}.blr-whiteboard{height:390px;gap:18px}.wb-node{width:76px;height:76px}.blr-whiteboard>i{width:25px}.blr-video-screen{height:330px}.blr-sim-chart{height:260px}.blr-demo-note{font-size:9px}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}[data-reveal]{opacity:1;transform:none}}
.bl-teacher-actions{margin-top:34px;display:flex;align-items:center;gap:9px;flex-wrap:wrap;padding:19px 0;border-top:1px solid var(--bl-line);border-bottom:1px solid var(--bl-line)}.bl-teacher-actions span{font-family:var(--bl-ar);font-size:12px;color:#5f5d63}.bl-teacher-actions i{width:3px;height:3px;border-radius:50%;background:var(--bl-violet);opacity:.5}.bl-age-rail{display:flex;align-items:center;gap:10px;margin-top:18px}.bl-age-rail small{font-family:var(--bl-ar);color:#8b898f;margin-inline-end:auto}.bl-age-rail span{padding:7px 10px;border:1px solid var(--bl-line);border-radius:999px;font-size:9px}.bl-prose{padding:120px 0}.bl-prose h1{font-family:var(--bl-ar);font-size:clamp(42px,5vw,72px)}
@media(max-width:760px){.bl-age-rail{align-items:flex-start;flex-wrap:wrap}.bl-age-rail small{width:100%;margin-bottom:4px}}
body.bl-dark .bl-teacher-actions span{color:#b8bac1}