@font-face{font-family:'DM Sans';font-style:normal;font-weight:400 500;font-display:swap;src:url('./assets/fonts/dm-sans.ttf') format('truetype')}
@font-face{font-family:'DM Sans';font-style:normal;font-weight:600 700;font-display:swap;src:url('./assets/fonts/dm-sans-semibold.ttf') format('truetype')}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:400 700;font-display:swap;src:url('./assets/fonts/space-grotesk.ttf') format('truetype')}
:root{--bg:#10182e;--panel:#18223b;--line:#ffffff1c;--ink:#f6f7fc;--muted:#a7b2c9;--lime:#d9fc85;--blue:#496dff;--paper:#fafbf7;--dark:#17233b;--font:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC',sans-serif;--display:'Space Grotesk',var(--font)}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.5}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.65}button:focus-visible,a:focus-visible{outline:3px solid #87aeff;outline-offset:5px}input:focus,textarea:focus,select:focus{outline:3px solid #496dff44;border-color:var(--blue)}[lang=zh]{font-weight:400}small{font-size:12px}::selection{background:var(--lime);color:var(--dark)}
.preview-bar{display:flex;justify-content:space-between;padding:7px 4vw;background:#d9fc85;color:#1c2925;font-size:11px;letter-spacing:.05em;font-weight:700}.preview-bar span[lang]{margin-left:7px}.site-header{max-width:1440px;margin:auto;display:flex;align-items:center;gap:30px;padding:25px 4vw;border-bottom:1px solid var(--line)}.wordmark{display:flex;align-items:center;gap:11px;font-family:var(--display);font-size:17px;font-weight:700;letter-spacing:.05em;white-space:nowrap}.wordmark small{display:block;color:var(--muted);font-family:var(--font);font-size:10px;letter-spacing:.13em;margin-top:2px}.brand-mark{display:grid;place-items:center;width:40px;height:44px;border:1px solid var(--lime);border-radius:50%;font-size:29px;color:var(--lime);transform:rotate(-15deg)}nav{display:flex;gap:27px;margin:auto;font-size:13px}nav a{position:relative;color:var(--muted);padding:7px 0}nav a[aria-current=page]{color:white}nav a[aria-current=page]:after{content:'';height:2px;position:absolute;bottom:-7px;left:0;right:0;background:var(--lime)}nav span{display:block;font-size:11px}.logo-plate{background:#fff;padding:7px 12px;border-radius:4px;width:158px;flex-shrink:0}.logo-plate img{display:block;width:100%;height:auto}
#app{min-height:calc(100vh - 242px);max-width:1440px;margin:auto;padding:0 4vw;outline:none}.site-footer{max-width:1440px;margin:auto;border-top:1px solid var(--line);padding:22px 4vw;display:flex;justify-content:space-between;gap:20px;font-size:11px;color:var(--muted)}.site-footer [lang]{font-size:10px}.site-footer a{color:var(--lime);align-self:center}
.eyebrow{display:flex;align-items:center;gap:9px;font-size:11px;text-transform:uppercase;letter-spacing:.17em;font-weight:600;color:var(--lime)}.tiny-dot{width:6px;height:6px;background:currentColor;border-radius:100%}.hero{display:grid;grid-template-columns:1.04fr 1fr;align-items:center;min-height:545px;position:relative;gap:20px}.hero-copy{padding:46px 0 40px;z-index:1}.hero h1{font-family:var(--display);font-size:clamp(48px,6.5vw,88px);line-height:1.03;font-weight:500;letter-spacing:-.055em;margin:25px 0 14px}.hero h1 em{font-family:Georgia,serif;font-weight:400;color:var(--lime);letter-spacing:-.055em}.hero-zh{font-size:20px;color:#c1cadb;letter-spacing:.08em;margin:0 0 23px}.hero-desc{font-size:15px;color:var(--muted);max-width:390px;line-height:1.8}.hero-desc span{display:block;font-size:13px}.hero-actions{display:flex;align-items:center;gap:20px;margin-top:29px}.hero-micro{font-size:11px;color:var(--muted);margin-top:15px}.hero-art{position:relative;width:100%;aspect-ratio:1;max-height:600px;display:grid;place-items:center}.hero-art>img{display:block;width:110%;max-width:650px;mix-blend-mode:lighten;animation:float 8s ease-in-out infinite}.orbit-label{position:absolute;right:0;top:16%;font-family:var(--display);font-size:11px;border:1px solid #ffffff38;border-radius:30px;padding:9px 15px;backdrop-filter:blur(12px);transform:rotate(7deg);color:var(--lime)}.artifact-label{position:absolute;bottom:12%;left:8%;font-size:11px;border-left:2px solid var(--lime);padding-left:12px;color:var(--muted)}.artifact-label b{display:block;color:white;font-size:13px;font-weight:500}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:15px;min-height:49px;padding:12px 22px;background:var(--lime);color:var(--dark);border:1px solid transparent;border-radius:8px;font-weight:600;font-size:14px;transition:transform .18s,background .18s}.btn:hover{background:#e6ffa7;transform:translateY(-2px)}.btn span[lang]{font-size:12px;font-weight:400}.btn.secondary{color:var(--ink);border-color:#ffffff36;background:transparent}.btn.secondary:hover{background:#ffffff0c}.btn.light{background:#edf0f6;color:var(--dark)}.btn.blue{background:var(--blue);color:white}.btn.text{background:transparent;color:var(--muted);padding:10px 0;min-height:40px}.btn.small{min-height:38px;padding:8px 13px;font-size:12px}.btn.danger{background:#ffdeca;color:#793222}.btn.full{width:100%}.arrow{font-size:20px;font-weight:400}.link-button{border:0;background:none;color:inherit;text-decoration:underline;text-underline-offset:4px;font-size:13px;padding:8px 0}
.journey{display:flex;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:35px}.journey-item{flex:1;padding:23px 17px 23px 0;position:relative}.journey-item:not(:first-child){padding-left:23px;border-left:1px solid var(--line)}.journey-item .number{font-family:var(--display);color:var(--lime);font-size:11px;display:block;margin-bottom:7px}.journey-item strong{font-family:var(--display);font-size:15px;font-weight:500}.journey-item [lang]{display:block;color:var(--muted);font-size:12px;margin-top:3px}.journey-item small{position:absolute;right:14px;top:23px;color:#75819c;font-size:14px}
.workspace{display:grid;grid-template-columns:300px minmax(0,1fr);gap:65px;max-width:1110px;margin:42px auto 55px;align-items:start}.sidebar{position:sticky;top:24px}.sidebar .eyebrow{margin-bottom:20px}.sidebar h2{font-family:var(--display);font-size:29px;letter-spacing:-.035em;line-height:1.2;margin:10px 0}.sidebar h2 span{display:block;font-size:17px;font-family:var(--font);font-weight:400;color:var(--muted);margin-top:10px}.progress-track{height:3px;background:#ffffff16;margin:26px 0}.progress-track i{height:100%;display:block;background:var(--lime);transition:width .35s}.steps{display:flex;flex-direction:column;gap:19px;margin:0;padding:0;list-style:none}.steps li{display:flex;gap:13px;align-items:center;color:#8693af;font-size:14px}.steps li>span{border:1px solid #ffffff2a;width:31px;height:31px;border-radius:50%;display:grid;place-items:center;font-size:12px;flex-shrink:0}.steps li.active{color:var(--lime)}.steps li.active>span{background:var(--lime);color:var(--dark);border-color:var(--lime)}.steps li.done>span{color:var(--lime);border-color:#d9fc8570}.steps small{display:block;font-size:11px;opacity:.8}.sidebar-bottom{font-size:12px;color:var(--muted);margin-top:32px;line-height:1.8}.sidebar-bottom img{width:170px;margin-bottom:4px;display:block;border-radius:18px}
.form-card{background:var(--paper);color:var(--dark);border-radius:18px;padding:36px 39px;box-shadow:0 20px 70px #00000020;min-width:0}.form-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;gap:12px}.mission{font-size:11px;font-weight:700;letter-spacing:.15em;color:#63717e}.save-status{font-size:11px;color:#466557}.form-card h1{font-family:var(--display);font-size:34px;font-weight:500;letter-spacing:-.04em;line-height:1.16;margin:0 0 8px}.form-card h1+[lang]{font-size:17px;color:#627080;margin:0 0 13px}.intro{color:#627080;font-size:14px;line-height:1.7;margin:12px 0 25px}.intro [lang]{display:block;font-size:12px}.field{display:block;margin:20px 0}.field-label{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:9px;font-size:14px;font-weight:600}.field-label [lang]{font-size:12px;font-weight:400;color:#6a7384}.field-label small{color:#6a7384;font-weight:400}.field input,.field textarea,.field select{width:100%;background:#fff;border:1px solid #d8dee5;border-radius:8px;padding:13px 14px;color:var(--dark);min-height:47px;font-size:16px;transition:box-shadow .15s}.field textarea{resize:vertical;min-height:100px;line-height:1.6}.field textarea::placeholder,.field input::placeholder{font-size:14px;color:#929aaa}.field-help{display:flex;justify-content:space-between;gap:12px;font-size:11px;color:#6e7888;margin-top:6px}.field-help .count{white-space:nowrap}.form-actions{display:flex;justify-content:space-between;align-items:center;gap:18px;border-top:1px solid #dfe3e7;margin-top:29px;padding-top:23px}.form-actions .btn.text{color:#697789}.privacy-note{font-size:12px;color:#647568;margin-top:20px;line-height:1.7}.privacy-note span{display:block}.avatars{display:flex;gap:10px;flex-wrap:wrap;margin:8px 0 22px}.avatar-choice{width:50px;height:50px;border:2px solid transparent;border-radius:50%;font-size:23px;background:#eceff1;transition:transform .15s}.avatar-choice.selected{border-color:var(--blue);background:#e5eaff;transform:translateY(-2px)}.pill{display:inline-flex;border:1px solid #d5dddf;border-radius:20px;font-size:11px;padding:5px 10px;color:#687887}.chips{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}.chip{background:#edf0e9;border:1px solid #d7ded0;border-radius:30px;padding:6px 11px;font-size:12px;color:#4b624d}.chip:hover{background:#e1ebd6}.draft-notice{padding:12px 14px;background:#eef3e4;border-radius:8px;font-size:12px;color:#566741;margin:18px 0;line-height:1.7}.error{color:#b33f24;background:#fff1e9;border-radius:8px;font-size:13px;padding:12px 14px;margin:12px 0;display:none}.error:not(:empty){display:block}
.qr-pair{display:grid;grid-template-columns:180px 1fr;align-items:center;gap:25px;margin:25px 0}.qr-wrap{background:white;padding:7px;border:1px solid #e0e5e7;border-radius:12px;text-align:center}.qr-wrap img{display:block;width:100%;height:auto;aspect-ratio:1}.qr-wrap small{color:#788292;display:block;font-size:10px;margin:0 0 9px}.recipient{font-family:var(--display);font-size:24px;letter-spacing:-.03em;overflow-wrap:anywhere}.recipient small{display:block;color:#637080;font-size:13px;font-family:var(--font);margin-top:5px}.mini-stat{font-size:13px;color:#526572;margin:17px 0}.mini-stat b{color:var(--dark);font-size:22px;margin-right:8px}.peer-links{display:flex;gap:8px;flex-wrap:wrap}.peer-links a{font-size:12px;padding:8px 10px;border:1px solid #d5dcd4;border-radius:6px}.peer-links a:hover{background:#eaf1df}.public-choice{display:grid;grid-template-columns:1fr 1fr;gap:12px}.public-choice label{border:1px solid #d9dfda;background:white;padding:15px 12px;border-radius:9px;cursor:pointer;font-size:13px}.public-choice label:has(input:checked){border-color:var(--blue);background:#f0f3ff}.public-choice small{display:block;font-size:11px;color:#647084;margin:7px 0 0 23px}.public-choice input{accent-color:var(--blue);margin-right:6px}.return-link{margin-top:20px;font-size:13px}.review-item{padding:16px 0;border-bottom:1px solid #dde3df}.review-item span{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:#6d7b82}.review-item p{white-space:pre-wrap;overflow-wrap:anywhere;margin:8px 0 0;font-size:15px}.check-row{display:flex;gap:11px;align-items:flex-start;font-size:12px;line-height:1.8;margin:23px 0}.check-row input{accent-color:var(--blue);width:18px;height:18px;margin-top:3px;flex-shrink:0}.seal-btn{background:var(--dark);color:var(--lime);width:100%;letter-spacing:.04em;min-height:57px}.seal-btn:hover{background:#253657}.seal-info{display:flex;gap:12px;justify-content:space-between;flex-wrap:wrap;margin-top:15px;font-size:11px;color:#69798a}.inbox{display:grid;gap:12px;margin:20px 0}.inbox .note{transform:none!important;margin:0;min-height:120px}.sealed-page{max-width:800px;margin:35px auto 55px;text-align:center}.sealed-page .eyebrow{justify-content:center}.sealed-page img{width:290px;max-width:90%;border-radius:50%;mix-blend-mode:lighten}.sealed-page h1{font-family:var(--display);font-size:clamp(42px,6vw,70px);letter-spacing:-.055em;font-weight:500;margin:7px 0}.sealed-page h1 em{font-family:Georgia,serif;font-weight:400;color:var(--lime)}.sealed-page>p{color:var(--muted)}.seal-ticket{max-width:540px;margin:28px auto;background:#17233b;border:1px solid #ffffff28;border-radius:13px;display:grid;grid-template-columns:1fr 1fr;text-align:left;padding:22px 28px;gap:22px}.seal-ticket span{display:block;font-size:11px;color:var(--muted);margin-bottom:4px}.seal-ticket strong{font-size:14px;overflow-wrap:anywhere}.sealed-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}.seal-sub{color:var(--lime)!important;font-size:18px}
.wall-page{padding:34px 0 45px}.wall-top{display:flex;justify-content:space-between;align-items:center;gap:25px}.wall-top h1{font-family:var(--display);font-size:48px;line-height:1.1;font-weight:500;letter-spacing:-.05em;margin:15px 0 8px}.wall-top h1 em{color:var(--lime);font-family:Georgia,serif;font-weight:400}.wall-sub{color:var(--muted);font-size:13px;margin-top:9px}.wall-actions{display:flex;gap:10px;align-items:center}.wall-tally{display:flex;gap:22px;font-family:var(--display);padding-right:10px}.wall-tally strong{font-size:27px;font-weight:500;display:block;line-height:1.3}.wall-tally span{font-size:10px;color:var(--muted);display:block}.note-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:23px;padding:32px 3px 16px;align-items:start}.note{position:relative;color:#24322e;background:#dcf4b1;padding:23px 21px 18px;min-height:210px;box-shadow:3px 7px 0 #00000016;border-radius:2px 2px 13px 2px;transform:rotate(var(--rotate,0deg));animation:pop-in .45s both;animation-delay:var(--delay,0ms);display:flex;flex-direction:column;overflow-wrap:anywhere}.note:after{content:'';position:absolute;right:0;bottom:0;border-style:solid;border-width:0 0 18px 18px;border-color:transparent transparent #10182e30 transparent}.note:nth-child(4n+2){background:#c5c7ff}.note:nth-child(4n+3){background:#ffc79e}.note:nth-child(4n+4){background:#fff0a3}.note:nth-child(4n+5){background:#b7dff1}.note-to{font-size:10px;letter-spacing:.08em;font-weight:600;border-bottom:1px solid #24322e30;padding-bottom:9px;display:flex;justify-content:space-between;gap:12px}.note p{font-size:18px;line-height:1.5;margin:16px 0;white-space:pre-wrap;flex:1;font-weight:500}.note-from{font-size:11px;display:flex;justify-content:space-between;gap:10px;opacity:.8}.note button{background:none;border:0;padding:4px;color:#26382c;font-size:11px;text-decoration:underline}.wall-bottom{margin-top:17px;padding-top:20px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:12px}.empty-state{padding:55px 20px;text-align:center;border:1px dashed #ffffff36;border-radius:12px;color:var(--muted);margin:25px 0}.empty-state strong{font-size:22px;color:white;display:block;margin-bottom:8px}
.teacher-page{padding:32px 0 45px}.teacher-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px;gap:20px}.teacher-head h1{font-family:var(--display);font-size:35px;letter-spacing:-.035em;font-weight:500;margin:10px 0}.teacher-head p{font-size:13px;color:var(--muted);margin:0}.teacher-layout{display:grid;grid-template-columns:1.25fr 1fr;gap:28px}.teacher-panel{background:var(--panel);border:1px solid var(--line);border-radius:13px;padding:25px}.teacher-panel h2{font-family:var(--display);font-size:21px;font-weight:500;margin:0 0 17px}.teacher-panel h2 span{font-size:13px;color:var(--muted);margin-left:7px}.teacher-panel input,.teacher-panel select{background:#10182e;border-color:#ffffff24;color:white}.teacher-panel .field-label [lang]{color:var(--muted)}.teacher-panel .field{margin:12px 0}.teacher-panel .qr-pair{margin:18px 0}.teacher-panel .qr-pair .recipient{font-size:21px}.teacher-panel .mini-stat{color:var(--muted)}.stats{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:18px 0;margin:20px 0}.stats strong{display:block;font-family:var(--display);font-size:35px;font-weight:400;line-height:1.2;color:var(--lime)}.stats span{font-size:11px;color:var(--muted)}.class-timeline{list-style:none;padding:0;margin:22px 0}.class-timeline li{display:flex;align-items:center;gap:17px;border-bottom:1px solid var(--line);padding:11px 0;font-size:14px}.class-timeline li>span{font-family:var(--display);font-size:12px;color:var(--lime);min-width:56px}.class-timeline small{display:block;color:var(--muted);font-size:11px}.teacher-panel .hint{color:var(--muted);font-size:12px;line-height:1.8}.teacher-tools{display:flex;gap:12px;flex-wrap:wrap}.moderation{margin-top:28px}.moderation header{display:flex;justify-content:space-between;align-items:center;gap:15px}.moderation h2{font-size:20px;font-weight:500}.moderation h2 span{font-size:13px;color:var(--muted)}.moderation .note-grid{padding-top:8px}.moderation .note{min-height:170px}.moderation .note p{font-size:15px}.moderation .note.hidden-note{opacity:.5}.sound-button{border:1px solid #ffffff38;background:transparent;border-radius:7px;padding:9px;color:var(--muted);font-size:12px}.projection .site-header,.projection .site-footer,.projection .preview-bar{display:none}.projection #app{max-width:none;padding:0 4vw}.projection .wall-top{padding-top:5px}.projection .note-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.projection .note{min-height:180px}.projection .wall-top h1{font-size:56px}.projection .wall-sub{font-size:16px}
dialog{border:1px solid #ffffff28;background:var(--bg);color:white;border-radius:18px;padding:32px;max-width:540px;width:calc(100% - 32px);box-shadow:0 24px 100px #0007}dialog::backdrop{background:#050c21bb;backdrop-filter:blur(10px)}dialog h2{font-family:var(--display);font-size:29px;margin:0 0 13px;font-weight:500}dialog p{font-size:14px;color:var(--muted);line-height:1.8}dialog .dialog-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:25px}dialog .qr-wrap{width:230px;margin:25px auto}dialog .qr-wrap small{font-size:12px}.countdown-dialog{text-align:center;border:0;background:transparent;box-shadow:none;overflow:hidden}.countdown-number{font-family:var(--display);font-size:160px;color:var(--lime);line-height:1.2;animation:count-in .8s both}.countdown-dialog h2{font-size:34px}.countdown-dialog .eyebrow{justify-content:center}.countdown-dialog p{color:#d1d8e9}.confirm-icon{font-size:65px;color:var(--lime);margin:0 0 14px}#toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%,18px);background:var(--lime);color:var(--dark);padding:12px 23px;border-radius:9px;box-shadow:0 10px 35px #0004;opacity:0;pointer-events:none;transition:.2s;max-width:calc(100% - 32px);z-index:10;font-size:13px;text-align:center}#toast.visible{opacity:1;transform:translate(-50%,0)}.opening-preview{padding:11px 15px;border:1px solid #c9af723f;background:#f9d27315;border-radius:8px;font-size:12px;color:#f6d487;margin-bottom:20px}.teacher-preview-caption{font-size:11px;color:var(--muted);margin-top:12px}
@keyframes float{0%,100%{transform:translateY(0) rotate(-2deg)}50%{transform:translateY(-11px) rotate(1deg)}}@keyframes pop-in{from{opacity:0;translate:0 14px}to{opacity:1;translate:0 0}}@keyframes count-in{from{transform:scale(1.15);opacity:.3}to{transform:scale(1);opacity:1}}
@media(min-width:1600px){.hero{min-height:630px}.hero h1{font-size:94px}}
@media(max-width:1050px){.workspace{grid-template-columns:240px minmax(0,1fr);gap:30px}.note-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.site-header{gap:20px}nav{gap:18px}.logo-plate{width:128px}.hero h1{font-size:66px}.teacher-layout{grid-template-columns:1fr 1fr}.teacher-panel .qr-pair{grid-template-columns:140px 1fr;gap:15px}.projection .note-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media(max-width:760px){.preview-bar{font-size:9px;padding:6px 18px}.preview-bar>span:last-child{font-size:9px}.preview-bar span[lang]{display:none}.site-header{padding:18px 20px;flex-wrap:wrap;gap:17px}.wordmark{font-size:14px;gap:8px}.brand-mark{width:31px;height:35px;font-size:23px}.wordmark small{font-size:9px}.logo-plate{width:120px;margin-left:auto;padding:5px 8px}nav{order:3;width:100%;margin:0;justify-content:space-between;font-size:12px;gap:12px;border-top:1px solid var(--line);padding-top:9px}nav span{display:inline;font-size:10px;margin-left:4px}nav a[aria-current=page]:after{bottom:-4px}#app{padding:0 22px}.hero{grid-template-columns:1fr;gap:0;min-height:0}.hero-copy{padding:32px 0 0}.hero .eyebrow{font-size:10px}.hero h1{font-size:clamp(48px,12vw,72px);margin:20px 0 12px;line-height:1.02}.hero-zh{font-size:17px;margin-bottom:17px}.hero-desc{font-size:14px;max-width:100%}.hero-desc span{font-size:12px}.hero-actions{margin-top:23px;gap:15px}.hero-actions .btn{font-size:13px;padding:12px 17px}.hero-micro{font-size:10px}.hero-art{width:86%;max-width:410px;margin:-10px auto -22px;aspect-ratio:1.1}.hero-art>img{width:110%}.orbit-label{font-size:9px;right:-5%;top:20%;padding:6px 9px}.artifact-label{bottom:14%;left:-4%;font-size:9px}.artifact-label b{font-size:11px}.journey{overflow-x:auto;margin:20px 0 27px}.journey-item{min-width:105px;padding:16px 10px 16px 0}.journey-item:not(:first-child){padding-left:13px}.journey-item strong{font-size:12px}.journey-item [lang]{font-size:10px}.journey-item small{display:none}.site-footer{padding:20px 22px;font-size:10px;flex-wrap:wrap;gap:12px}.site-footer>span:nth-child(2){display:none}.workspace{display:block;margin:23px auto 30px;max-width:580px}.sidebar{position:static;margin:0 0 23px}.sidebar .eyebrow{font-size:10px;margin-bottom:10px}.sidebar h2{display:none}.progress-track{margin:12px 0 15px}.steps{flex-direction:row;justify-content:space-between;gap:6px}.steps li{display:block;text-align:center;font-size:10px}.steps li>span{margin:0 auto 7px;width:26px;height:26px;font-size:10px}.steps li small{display:none}.sidebar-bottom{display:none}.form-card{padding:26px 22px;border-radius:14px}.form-top{margin-bottom:23px}.form-card h1{font-size:30px}.form-card h1+[lang]{font-size:15px}.form-actions{gap:12px;margin-top:23px;padding-top:19px}.form-actions .btn{padding:12px 16px;font-size:13px}.qr-pair{grid-template-columns:145px 1fr;gap:17px}.recipient{font-size:21px}.mini-stat{font-size:11px}.qr-pair .btn{font-size:11px;padding:8px 10px;gap:6px}.peer-links a{font-size:11px}.wall-top{display:block}.wall-top h1{font-size:40px}.wall-actions{margin-top:20px;justify-content:space-between}.wall-tally{gap:23px}.wall-tally strong{font-size:23px}.note-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:17px;padding-top:25px}.note{padding:16px 14px;min-height:185px}.note p{font-size:15px}.note-to{font-size:9px}.note-from{font-size:10px}.wall-bottom{font-size:11px;display:block}.wall-bottom span{display:block;margin-bottom:5px}.teacher-head{align-items:start;flex-wrap:wrap}.teacher-head h1{font-size:29px}.teacher-layout{grid-template-columns:1fr}.teacher-panel{padding:22px}.teacher-panel .qr-pair{grid-template-columns:150px 1fr}.teacher-tools .btn{font-size:12px}.moderation header{flex-wrap:wrap}.sealed-page{margin-top:26px}.sealed-page>img{width:230px}.sealed-page h1{font-size:44px}.seal-ticket{padding:20px;gap:18px}.seal-ticket strong{font-size:12px}.sealed-page>p{font-size:13px}.projection .note-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.projection .wall-top h1{font-size:38px}.public-choice{gap:8px}.public-choice label{padding:12px 8px;font-size:12px}.public-choice small{font-size:10px}dialog{padding:25px}.countdown-number{font-size:125px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media(max-width:760px){.form-actions .btn{gap:7px;white-space:nowrap;padding:12px 13px}.form-actions .btn.text{padding:8px 0;font-size:12px;gap:5px}.form-actions .btn span[lang]{font-size:11px}.avatars{gap:8px}.avatar-choice{width:42px;height:42px;font-size:21px}.steps li small{display:block;font-size:9px;margin-top:3px}.hero-actions{flex-wrap:wrap;gap:8px 15px}.hero-actions .btn{gap:8px;white-space:nowrap}.hero-actions .btn.text{font-size:12px}.hero-actions .btn.text span[lang]{font-size:10px}}
/* Live classroom additions; preserve the original course visual system. */
.teacher-panel select{width:100%;padding:14px;border-radius:12px;border:1px solid #d9dfeb;font:inherit;background:#fff;color:#17213a;min-height:48px}
.teacher-panel form+form,.teacher-panel #new-class-form{margin-top:28px}
.form-card .inbox{display:grid;gap:20px;margin:24px 0}
.form-card .inbox .note{color:#17213a;transform:none}
.form-card .light.full{margin:12px 0}
.preview-bar #connection{white-space:nowrap}