/* prevent-auth-view-flash */
body.app-booting{background:#eef3f8}
body.app-booting>#authView,body.app-booting>#appView{visibility:hidden!important}
:root{font-family:"Microsoft YaHei UI","Segoe UI",sans-serif;color:#14213d;background:linear-gradient(135deg,#eaf2ff 0%,#f7f9fd 46%,#fff4ec 100%)}*{box-sizing:border-box}body{margin:0;min-height:100vh}.hidden{display:none!important}header,main{max-width:1180px;margin:auto}header{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;padding:36px 28px 22px}.brand{min-width:0}.brand b{color:#2e6cf6}h1{font-size:38px;margin:5px 0}h2{margin:0 0 12px}p{color:#72809b}.auth-shell{position:relative;display:flex;align-items:center;justify-content:center;min-height:100vh;padding:32px 20px;overflow:auto;background:linear-gradient(135deg,#08172bbf,#17356380),url("assets/auth-classroom-bg.png") center/cover no-repeat fixed;color:#14213d}.auth-shell:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at center,#07172a24 0%,#07172a73 100%);pointer-events:none}.auth-center{position:relative;z-index:1;width:min(520px,100%);margin:auto}.auth-brand{display:flex;align-items:center;justify-content:center;gap:12px;margin:0 0 20px;color:#fff;text-align:left;text-shadow:0 2px 14px #05102080}.brand-mark{position:relative;display:grid;place-items:center;width:46px;height:46px;flex:0 0 auto;border:1px solid #ffffff5c;border-radius:15px;background:linear-gradient(145deg,#5e8cff 0%,#2362ed 48%,#ff8b4a 100%);box-shadow:0 14px 30px #06142c52}.brand-mark span{width:15px;height:19px;border:2px solid #fff;border-top:0;border-radius:3px;transform:skewY(-7deg)}.auth-brand strong,.auth-brand small{display:block}.auth-brand strong{font-size:20px;letter-spacing:.03em}.auth-brand small{margin-top:3px;color:#d6e2f5;font-size:11px;letter-spacing:.12em}.auth-card{padding:36px 40px;border:1px solid #ffffffa6;border-radius:28px;background:#ffffffed;box-shadow:0 30px 80px #020b1b73;backdrop-filter:blur(20px)}.auth-card-head{display:block;padding:0;margin:0 0 27px;text-align:center}.auth-badge{display:inline-block;margin-bottom:12px;padding:6px 10px;border-radius:999px;color:#2164e8;background:#eaf1ff;font-size:11px;font-weight:800;letter-spacing:.08em}.auth-card-head h2{margin:0 0 8px;color:#10203d;font-size:30px;letter-spacing:-.02em}.auth-card-head p{margin:0;color:#758198;font-size:13px;line-height:1.65}.auth-card form{display:grid;gap:15px}.field{display:block}.field-label{display:block;margin:0 0 7px;color:#33425f;font-size:13px;font-weight:800}.input-wrap{display:flex;align-items:center;gap:11px;height:50px;padding:0 14px;border:1px solid #d9e1ee;border-radius:13px;background:#f8faff;transition:border-color .2s,box-shadow .2s,background .2s}.input-wrap:focus-within{border-color:#5688ef;background:#fff;box-shadow:0 0 0 4px #2f6ef514}.auth-card .input-wrap input{width:100%;min-width:0;height:100%;padding:0;border:0;outline:0;border-radius:0;background:transparent;color:#14213d}.auth-card .input-wrap input::placeholder{color:#a3adbf}.user-icon,.lock-icon,.ticket-icon{position:relative;display:inline-block;width:17px;height:17px;flex:0 0 auto;color:#7b8aa6}.user-icon:before{content:"";position:absolute;left:5px;top:1px;width:6px;height:6px;border:1.6px solid currentColor;border-radius:50%}.user-icon:after{content:"";position:absolute;left:2px;bottom:0;width:12px;height:7px;border:1.6px solid currentColor;border-radius:8px 8px 3px 3px}.lock-icon:before{content:"";position:absolute;left:4px;top:1px;width:8px;height:8px;border:1.6px solid currentColor;border-bottom:0;border-radius:7px 7px 0 0}.lock-icon:after{content:"";position:absolute;left:2px;bottom:0;width:13px;height:10px;border-radius:3px;background:currentColor}.ticket-icon{border:1.6px solid currentColor;border-radius:3px}.ticket-icon:after{content:"";position:absolute;left:7px;top:2px;height:10px;border-left:1.5px dashed currentColor}.password-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.auth-submit{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;height:50px;margin-top:2px;padding:0 18px;border:0;border-radius:13px;color:#fff;background:linear-gradient(100deg,#2563eb,#3e78f5);box-shadow:0 13px 25px #2867ed35;font-size:15px;font-weight:800;transition:transform .2s,box-shadow .2s}.auth-submit:hover{transform:translateY(-1px);box-shadow:0 16px 30px #2867ed43}.auth-submit i{font-style:normal;font-size:18px;font-weight:400}.auth-result{min-height:16px;margin:-4px 0 -6px;color:#d14343;font-size:12px;text-align:center}.auth-switch{display:flex;align-items:center;justify-content:center;gap:5px;padding-top:15px;border-top:1px solid #e9edf4;color:#8792a6;font-size:13px}.auth-switch button{padding:3px;border:0;color:#2467eb;background:transparent;font-size:13px;font-weight:800}.tabs{display:grid;grid-template-columns:1fr 1fr;gap:9px}.tab{display:block;padding:11px 10px;border:1px solid #dce3ef;border-radius:12px;color:#53617a;background:#f8faff;text-align:left;transition:.2s}.tab strong,.tab small{display:block}.tab strong{font-size:13px}.tab small{margin-top:3px;color:#929db0;font-size:10px;font-weight:500}.tab.active{border-color:#8eb2ff;color:#1f62e8;background:#edf3ff;box-shadow:inset 0 0 0 1px #a9c4ff}.tab.active small{color:#6285c9}.auth-foot{margin:16px 0 0;color:#d9e4f5;font-size:11px;text-align:center;text-shadow:0 2px 10px #051020}.auth-card #registerForm{gap:12px}.teacher-panel{display:flex;align-items:flex-start;gap:12px;min-width:470px;justify-content:flex-end}.status,.pill{border-radius:999px;padding:9px 14px;font-weight:700;white-space:nowrap}.online{color:#087f5b;background:#dff8ee}.offline{color:#b42318;background:#fee4e2}.teacher-meta{display:grid;grid-template-columns:repeat(3,minmax(86px,1fr));gap:8px;padding:10px;border:1px solid #dfe7f5;border-radius:18px;background:#fff;box-shadow:0 12px 28px #1d355712}.teacher-meta div{min-width:0;padding:4px 8px;border-left:1px solid #edf1f8}.teacher-meta div:first-child{border-left:0}.teacher-meta small{display:block;margin-bottom:3px;color:#7c89a3;font-size:12px}.teacher-meta strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#14213d;font-size:14px}.small-button{padding:9px 14px;border:1px solid #d8e0ef;background:#fff;color:#14213d}main{padding:0 28px 40px}.card{background:#fff;border:1px solid #e3e9f4;border-radius:24px;padding:24px;margin-bottom:20px;box-shadow:0 16px 36px #1d355716}.row{display:grid;grid-template-columns:1fr 1.4fr auto;gap:12px}input,textarea,button{font:inherit;border-radius:14px;padding:14px 16px}input,textarea{border:1px solid #d8e0ef}input:disabled{background:#f3f6fb;color:#72809b}button{border:0;font-weight:700;cursor:pointer}.orange{color:#fff;background:#ff7a1a}.classes{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;margin-top:18px}.class-item{background:#f7f9fd;border:2px solid transparent;border-radius:18px;padding:15px;cursor:pointer}.class-item.selected{border-color:#2e6cf6;background:#edf3ff}.class-item small{display:block;color:#72809b;margin-top:6px}.code{margin-top:8px;padding:8px;color:#2e6cf6;background:#edf3ff}.grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.heading{display:flex;justify-content:space-between;align-items:center}.pill{background:#edf3ff;color:#2e6cf6;font-size:13px}textarea{width:100%;min-height:210px;margin:12px 0;resize:vertical}.primary{display:block;width:100%;margin-top:18px;color:#fff;background:#2e6cf6;font-size:18px}.primary:disabled{opacity:.4}.link{color:#2e6cf6;background:transparent}.history-item{border:1px solid #e6ebf4;border-radius:15px;padding:13px;margin:9px 0}.history-item p{color:#263653}.receipt{font-size:12px;color:#72809b}.empty{text-align:center;color:#98a2b3;padding:40px 10px}@media(max-width:1040px){header{flex-direction:column}.teacher-panel{width:100%;min-width:0;justify-content:space-between}.teacher-meta{flex:1}}@media(max-width:900px){.grid,.row{grid-template-columns:1fr}}@media(max-width:620px){.teacher-panel{flex-direction:column}.teacher-meta{width:100%;grid-template-columns:1fr}.teacher-meta div{border-left:0;border-top:1px solid #edf1f8}.teacher-meta div:first-child{border-top:0}}
@media(max-width:560px){.auth-shell{padding:22px 14px;background-attachment:scroll}.auth-center{margin:auto}.auth-brand{margin-bottom:15px}.auth-card{padding:27px 20px;border-radius:22px}.auth-card-head{margin-bottom:22px}.auth-card-head h2{font-size:27px}.password-grid{grid-template-columns:1fr}.tab small{display:none}.auth-foot{line-height:1.6}}
/* dashboard-background-redesign */
#appView{position:relative;min-height:100vh;padding:24px 0 52px;overflow:hidden;background:linear-gradient(135deg,#07172ad9 0%,#173563b8 52%,#142844c7 100%),url("assets/auth-classroom-bg.png") center/cover no-repeat fixed}#appView:before{content:"";position:fixed;inset:0;pointer-events:none;background:radial-gradient(circle at 18% 8%,#6da2ff2b 0%,transparent 34%),radial-gradient(circle at 86% 92%,#ffae7021 0%,transparent 30%)}#appView>header,#appView>main{position:relative;z-index:1;width:min(1240px,calc(100% - 40px));max-width:none}#appView>header{align-items:center;margin:0 auto 20px;padding:20px 22px;border:1px solid #ffffff38;border-radius:24px;background:#f8fbffe3;box-shadow:0 24px 60px #020b1b54;backdrop-filter:blur(22px)}#appView .brand b{display:inline-flex;align-items:center;gap:7px;color:#2467eb;font-size:13px}#appView .brand b:before{content:"";width:8px;height:8px;border-radius:50%;background:#2f74f5;box-shadow:0 0 0 5px #2f74f51a}#appView .brand h1{margin:4px 0 5px;color:#10203d;font-size:31px;letter-spacing:-.035em}#appView .brand p{margin:0;font-size:13px}.teacher-panel{align-items:center;min-width:0}.status{padding:8px 12px;font-size:12px}.teacher-meta{padding:6px;border-color:#dfe6f1;border-radius:15px;background:#ffffffb8;box-shadow:none}.teacher-meta div{padding:5px 10px}.teacher-meta small{font-size:10px}.teacher-meta strong{font-size:13px}.small-button{padding:9px 13px;border-color:#d6dfed;border-radius:11px;background:#ffffffb5;transition:.2s}.small-button:hover{border-color:#8eb2ff;color:#2467eb;background:#fff}#appView>main{margin:auto;padding:0}.card{border:1px solid #ffffff73;border-radius:22px;background:#f9fbffe5;box-shadow:0 22px 54px #020b1b42;backdrop-filter:blur(22px)}#appView main>.card{padding:25px 26px}.card h2{color:#10203d;font-size:21px;letter-spacing:-.02em}.row{grid-template-columns:.9fr 1.5fr auto;gap:11px}.row input,.card textarea{border-color:#d9e2ef;background:#ffffffc9;transition:border-color .2s,box-shadow .2s,background .2s}.row input:focus,.card textarea:focus{outline:0;border-color:#6593f4;background:#fff;box-shadow:0 0 0 4px #2f6ef514}.row input:disabled{color:#65738d;background:#edf2f8b8}.orange{min-width:116px;color:#fff;background:linear-gradient(110deg,#ff8a34,#ff6b18);box-shadow:0 10px 22px #ff711f30;transition:.2s}.orange:hover{transform:translateY(-1px);box-shadow:0 14px 28px #ff711f40}.classes{gap:13px;margin-top:17px}.class-item{position:relative;border:1px solid #dfe7f2;background:#ffffff9e;transition:transform .2s,border-color .2s,box-shadow .2s}.class-item:hover{transform:translateY(-2px);border-color:#b6cdf8;box-shadow:0 12px 25px #1d355718}.class-item.selected{border-color:#5b8df4;background:linear-gradient(145deg,#edf4ff,#f8fbff);box-shadow:0 11px 26px #2967dc20}.class-item strong{color:#132542;font-size:17px}.class-item .code{border-radius:9px;background:#e8f0ff}.grid{grid-template-columns:1.05fr .95fr;gap:20px}.grid>.card{min-height:430px;margin-bottom:0;padding:25px}.heading{gap:12px}.pill{padding:8px 12px;color:#2467eb;background:#e9f1ff;font-size:12px}.card textarea{min-height:225px;border-radius:15px}.grid .primary{height:52px;border-radius:13px;background:linear-gradient(100deg,#2563eb,#3e78f5);box-shadow:0 13px 25px #2867ed2d;transition:.2s}.grid .primary:not(:disabled):hover{transform:translateY(-1px);box-shadow:0 16px 30px #2867ed40}.grid .primary:disabled{color:#f7f9ff;background:#90afea;box-shadow:none}.history-item{border-color:#dfe6f1;background:#ffffffa8;transition:.2s}.history-item:hover{border-color:#b9cff7;background:#fff}.empty{display:grid;place-items:center;min-height:110px;color:#8491a8;border:1px dashed #cdd8e8;border-radius:16px;background:#ffffff52}.grid .empty{min-height:250px}.link{padding:8px 10px;border-radius:9px;background:#edf3ff}.receipt{display:block;margin-top:8px}
@media(max-width:1040px){#appView>header{align-items:stretch}.teacher-panel{width:100%}.grid{grid-template-columns:1fr}.grid>.card{min-height:0}.grid .empty{min-height:150px}}
@media(max-width:680px){#appView{padding:12px 0 28px;background-attachment:scroll}#appView>header,#appView>main{width:min(100% - 20px,1240px)}#appView>header{padding:18px;border-radius:19px}.teacher-panel{align-items:stretch}.teacher-meta{grid-template-columns:1fr}.small-button{width:100%}#appView main>.card,.grid>.card{padding:19px;border-radius:19px}.row{grid-template-columns:1fr}.orange{width:100%}.card textarea{min-height:190px}}
/* class-sidebar-layout */
.dashboard-layout{display:grid;grid-template-columns:310px minmax(0,1fr);gap:20px;align-items:start}.class-sidebar.card{position:sticky;top:20px;min-height:590px;margin:0;padding:22px 18px;background:#f9fbffe8}.sidebar-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.sidebar-heading h2{margin:3px 0 0;font-size:22px}.sidebar-kicker,.section-kicker{display:block;color:#6f83a6;font-size:9px;font-weight:900;letter-spacing:.18em}.class-count{display:grid;place-items:center;width:34px;height:34px;border-radius:11px;color:#2467eb;background:#e8f0ff;font-size:14px;font-weight:900}.sidebar-actions{display:grid;grid-template-columns:1fr;gap:8px}.sidebar-action{display:flex;align-items:center;justify-content:center;gap:5px;min-width:0;padding:11px 8px;border:1px solid #d8e2ef;border-radius:11px;color:#385071;background:#ffffffa8;font-size:12px;transition:.2s}.sidebar-action i{font-style:normal;font-size:17px;line-height:1}.sidebar-action:hover:not(:disabled){transform:translateY(-1px);border-color:#8fb2f7;color:#2467eb;background:#fff}.sidebar-action.primary-action{border-color:#3272ee;color:#fff;background:linear-gradient(110deg,#2563eb,#3d79f3);box-shadow:0 9px 20px #2467eb28}.sidebar-action.primary-action:hover{color:#fff}.sidebar-action:disabled{cursor:not-allowed;opacity:.45}.sidebar-class-form{margin-top:12px;padding:13px;border:1px solid #dbe4f0;border-radius:14px;background:#f4f7fc}.sidebar-class-form label span{display:block;margin-bottom:7px;color:#56647c;font-size:11px;font-weight:800}.sidebar-class-form input{width:100%;padding:11px 12px;border-radius:10px;background:#fff}.sidebar-class-form>div{display:grid;grid-template-columns:1fr auto;gap:7px;margin-top:9px}.sidebar-class-form .orange{min-width:0;padding:10px}.text-button{padding:10px;color:#65748e;background:transparent}.binding-panel{margin-top:12px;padding:14px;border:1px solid #9fbcf6;border-radius:15px;background:linear-gradient(145deg,#eaf2ff,#f7faff);box-shadow:0 10px 24px #2467eb17}.binding-panel>div{display:flex;align-items:center;justify-content:space-between;gap:8px}.binding-panel span{color:#60708d;font-size:10px;font-weight:800}.binding-panel strong{color:#145ee8;font-size:19px;letter-spacing:.12em}.binding-panel p{margin:8px 0 10px;color:#73819a;font-size:10px;line-height:1.5}.binding-panel button{width:100%;padding:8px;border-radius:9px;color:#2467eb;background:#fff;font-size:11px}.class-list-label{display:flex;align-items:center;justify-content:space-between;margin:21px 2px 9px;color:#40506c;font-size:12px;font-weight:900}.class-list-label small{color:#929db0;font-size:10px;font-weight:500}.classes.class-list{display:flex;flex-direction:column;gap:8px;max-height:430px;margin:0;padding-right:3px;overflow-y:auto}.classes.class-list::-webkit-scrollbar{width:5px}.classes.class-list::-webkit-scrollbar-thumb{border-radius:999px;background:#cbd7e9}.class-list .class-item{flex:0 0 auto;margin:0;padding:13px;border-radius:14px}.class-item-top{display:flex;align-items:center;justify-content:space-between;gap:8px}.class-item-top strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:15px}.class-item-top span{flex:0 0 auto;padding:4px 7px;border-radius:999px;color:#63728c;background:#eef2f8;font-size:9px;font-weight:800}.class-list .class-item>small{margin-top:5px;font-size:10px}.class-device-state{display:flex;align-items:center;gap:6px;margin-top:9px;color:#7c899f;font-size:10px}.class-device-state i{width:7px;height:7px;border-radius:50%}.device-online{background:#1db77a;box-shadow:0 0 0 4px #1db77a18}.device-offline{background:#aeb9ca}.class-list .class-item.selected .class-item-top span{color:#2467eb;background:#dce9ff}.sidebar-empty{display:flex;flex-direction:column;justify-content:center;gap:6px;min-height:150px;padding:18px}.sidebar-empty strong{color:#50607a;font-size:13px}.sidebar-empty span{font-size:10px}.workspace{min-width:0}.workspace-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:20px}.workspace-grid>.card{min-height:590px;margin:0;padding:25px}.workspace-grid .heading h2{margin:3px 0 0}.notice-card{display:flex;flex-direction:column}.notice-card textarea{flex:1;min-height:280px}.speech-option{display:flex;align-items:center;gap:8px;width:max-content;color:#40506c;font-size:13px}.speech-option input{width:auto}.send-result{min-height:18px;margin:10px 0 0;font-size:12px}.history-card{min-width:0}.history-card #history{max-height:490px;overflow-y:auto}.history-card #history::-webkit-scrollbar{width:5px}.history-card #history::-webkit-scrollbar-thumb{border-radius:999px;background:#cbd7e9}
@media(max-width:1080px){.dashboard-layout{grid-template-columns:270px minmax(0,1fr)}.workspace-grid{grid-template-columns:1fr}.workspace-grid>.card{min-height:430px}.class-sidebar.card{min-height:0}.classes.class-list{max-height:520px}}
@media(max-width:820px){.dashboard-layout{grid-template-columns:1fr}.class-sidebar.card{position:relative;top:auto}.classes.class-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));max-height:none}.workspace-grid>.card{min-height:0}.notice-card textarea{min-height:210px}.history-card #history{max-height:none}}
@media(max-width:520px){.sidebar-actions{grid-template-columns:1fr}.classes.class-list{grid-template-columns:1fr}.workspace-grid>.card{padding:19px}}
/* inline-class-binding-code */
.class-binding-code{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:7px;width:100%;margin-top:11px;padding:8px 9px;border:1px solid #b8cdf7;border-radius:10px;color:#2467eb;background:linear-gradient(135deg,#edf4ff,#fff);text-align:left;transition:transform .2s,border-color .2s,box-shadow .2s}.class-binding-code:hover{transform:translateY(-1px);border-color:#6f9cf5;box-shadow:0 8px 18px #2467eb1c}.class-binding-code span{font-size:9px;font-weight:800}.class-binding-code strong{overflow:hidden;color:#155fe8;font-size:15px;letter-spacing:.13em;text-align:center;text-overflow:ellipsis}.class-binding-code em{color:#7d8ba4;font-size:9px;font-style:normal;font-weight:600}.class-item.selected .class-binding-code{border-color:#78a1f4;background:#fff}
/* class-quota */
.quota-summary{display:grid;grid-template-columns:1fr auto;align-items:center;gap:7px;margin-top:11px;padding:11px 12px;border:1px solid #dbe4f0;border-radius:13px;background:#ffffff80}.quota-summary>div:first-child{display:flex;align-items:center;gap:7px}.quota-summary span{color:#65748e;font-size:10px;font-weight:700}.quota-summary strong{color:#2467eb;font-size:12px}.quota-summary button{padding:4px;color:#2467eb;background:transparent;font-size:10px}.quota-track{grid-column:1/-1;height:4px;overflow:hidden;border-radius:999px;background:#dfe7f3}.quota-track i{display:block;width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,#3173f4,#6d9bfa);transition:width .3s}.quota-form{margin-top:10px;padding:12px;border:1px solid #9fbcf6;border-radius:14px;background:linear-gradient(145deg,#eaf2ff,#f8fbff)}.quota-form label span{display:block;margin-bottom:6px;color:#52617b;font-size:10px;font-weight:800}.quota-form input{width:100%;padding:10px 11px;border-radius:9px;background:#fff;font-size:12px;text-transform:uppercase}.quota-form>div{display:grid;grid-template-columns:1fr auto;gap:6px;margin-top:8px}.quota-form>div button{padding:9px;border-radius:9px;font-size:10px}.quota-form>p{min-height:14px;margin:6px 0 0;color:#c23934;font-size:9px;line-height:1.4}
.notice-settings{margin-top:4px;border:1px solid #dce5f1;border-radius:15px;background:#f7f9fdb8;overflow:hidden}
.notice-settings summary{position:relative;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:13px 34px 13px 15px;cursor:pointer;list-style:none;color:#263a5d;font-size:13px;font-weight:900}
.notice-settings summary::-webkit-details-marker{display:none}
.notice-settings summary:after{content:"";position:absolute;right:15px;top:50%;width:7px;height:7px;border-right:2px solid #8390a5;border-bottom:2px solid #8390a5;transform:translateY(-65%) rotate(45deg);transition:transform .2s}
.notice-settings[open] summary:after{transform:translateY(-20%) rotate(225deg)}
.notice-settings summary small{margin-left:auto;color:#8995a9;font-size:10px;font-weight:500}
.settings-body{display:grid;gap:10px;padding:0 12px 12px}
.setting-row,.setting-block{border:1px solid #e0e7f2;border-radius:13px;background:#ffffffc9}
.setting-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px}
.setting-row strong,.setting-title strong{display:block;color:#203454;font-size:12px}
.setting-row small,.setting-title small{display:block;margin-top:3px;color:#8793a7;font-size:9px;line-height:1.45}
.switch{position:relative;display:block;width:42px;height:24px;flex:0 0 auto}
.switch input{position:absolute;opacity:0}
.switch i{position:absolute;inset:0;border-radius:999px;background:#c9d2df;transition:.2s}
.switch i:after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 2px 6px #24344c33;transition:.2s}
.switch input:checked+i{background:#3273f1}
.switch input:checked+i:after{transform:translateX(18px)}
.setting-block{padding:12px 13px}
.setting-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px}
.setting-title small{margin:0;text-align:right}
.choice-grid{display:grid;gap:7px}
.repeat-grid{grid-template-columns:repeat(4,1fr)}
.duration-grid{grid-template-columns:repeat(3,1fr)}
.choice-grid label{min-width:0}
.choice-grid input{position:absolute;opacity:0;pointer-events:none}
.choice-grid span{display:block;padding:9px 7px;border:1px solid #dce4f0;border-radius:9px;color:#57657d;background:#fbfcff;text-align:center;font-size:10px;font-weight:800;cursor:pointer;transition:.18s}
.choice-grid input:checked+span{border-color:#77a0f4;color:#1f64eb;background:#eaf2ff;box-shadow:inset 0 0 0 1px #a9c3f7}
.choice-grid.disabled{opacity:.42;pointer-events:none}
.display-template-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.display-template-grid label{min-width:0}.display-template-grid input{position:absolute;opacity:0;pointer-events:none}.display-template-preview{display:flex;min-height:118px;padding:13px;border:2px solid transparent;border-radius:14px;cursor:pointer;flex-direction:column;transition:.18s}.display-template-preview i{display:grid;width:34px;height:34px;margin-bottom:auto;border-radius:10px;place-items:center;font-size:17px;font-style:normal}.display-template-preview b,.display-template-preview small{display:block}.display-template-preview b{margin-top:12px;font-size:12px}.display-template-preview small{margin-top:4px;font-size:9px;line-height:1.4}.default-preview{border-color:#dbe5f3;color:#263a59;background:#f8faff}.default-preview i{background:#ffedaa}.morning-preview{color:#fff;background:linear-gradient(145deg,#2879ff,#1559d8)}.morning-preview i{background:#ffffff2e}.record-preview{color:#fff;background:linear-gradient(145deg,#171a20,#050609)}.record-preview i{color:#fff;background:#2878ff}.display-template-grid input:checked+.display-template-preview{border-color:#efb45b;box-shadow:0 0 0 3px #efb45b24,0 8px 18px #253b6514;transform:translateY(-1px)}
.template-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
.template-item{position:relative;display:flex;min-width:0;border:1px solid #dfe6f1;border-radius:10px;background:#fbfcff;overflow:hidden}
.template-item>button:first-child{display:block;min-width:0;flex:1;padding:9px 10px;color:#263a5d;background:transparent;text-align:left}
.template-item strong,.template-item span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.template-item strong{font-size:10px}.template-item span{margin-top:3px;color:#8390a5;font-size:8px}
.template-item em{position:absolute;top:6px;right:7px;padding:2px 5px;border-radius:999px;color:#6680a9;background:#edf2fa;font-size:7px;font-style:normal}
.template-delete{width:30px;padding:0;color:#b04747;background:#fff2f2;font-size:15px}
.template-create{display:grid;grid-template-columns:1fr auto;gap:7px;margin-top:8px}
.template-create input{min-width:0;padding:9px 10px;border-radius:9px;background:#fff;font-size:10px}
.template-create button{padding:9px 11px;border-radius:9px;color:#2467eb;background:#e8f0ff;font-size:10px}
.notice-meta{display:block;margin-top:7px;color:#5270a6;font-size:10px;font-weight:700}
@media(max-width:560px){.repeat-grid,.duration-grid,.template-list{grid-template-columns:repeat(2,1fr)}.setting-title{align-items:flex-start;flex-direction:column}.setting-title small{text-align:left}.template-create{grid-template-columns:1fr}}

.repeat-input{display:flex;align-items:center;overflow:hidden;border:1px solid #dce4f0;border-radius:10px;background:#fff;transition:.2s}
.repeat-input:focus-within{border-color:#77a0f4;box-shadow:0 0 0 3px #2f6ef512}
.repeat-input input{width:100%;min-width:0;padding:10px 12px;border:0;outline:0;border-radius:0;background:transparent;color:#203454;font-size:12px;font-weight:800}
.repeat-input>span{padding:0 13px;color:#65748e;font-size:11px;font-weight:800;white-space:nowrap}
.repeat-input.disabled{opacity:.42;pointer-events:none}
.template-student-field{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:10px;margin-bottom:9px;padding:8px 10px;border:1px solid #dfe6f1;border-radius:10px;background:#fbfcff}
.template-student-field>span{color:#334967;font-size:10px;font-weight:900;white-space:nowrap}
.template-student-field>span small{margin-left:3px;color:#8a96aa;font-size:8px;font-weight:500}
.template-student-field input{min-width:0;padding:8px 10px;border:1px solid #dce4ef;border-radius:8px;background:#fff;font-size:10px}
.template-student-field input:focus{outline:0;border-color:#77a0f4;box-shadow:0 0 0 3px #2f6ef510}

.collaboration-button{position:relative;display:flex;align-items:center;gap:7px;white-space:nowrap}
.invitation-badge,.collaboration-alert-dot{width:9px;height:9px;flex:0 0 9px;border-radius:50%;background:#ef4444;box-shadow:0 0 0 4px #ef44441a}
.invitation-badge{position:absolute;top:5px;right:5px}
.collaboration-alert-dot{position:absolute;top:7px;right:7px;margin:0;padding:0;text-decoration:none}
.collaboration-modal{position:fixed;inset:0;z-index:10000;display:grid;place-items:center;padding:24px;background:#07172abf;backdrop-filter:blur(8px)}
.collaboration-dialog{width:min(900px,100%);max-height:min(760px,90vh);overflow:auto;border:1px solid #ffffff75;border-radius:24px;background:#f6f9feeF;box-shadow:0 30px 90px #020b1b88}
.collaboration-dialog .collaboration-head{display:flex;align-items:flex-start;justify-content:space-between;max-width:none;margin:0;padding:24px 26px 18px;border-bottom:1px solid #dfe7f2}
.collaboration-head h2{margin:3px 0 4px;color:#10203d;font-size:25px}.collaboration-head p{margin:0;font-size:12px}
.collaboration-head>button{width:36px;height:36px;padding:0;border-radius:10px;color:#64748b;background:#e9eef6;font-size:23px}
.collaboration-columns{display:grid;grid-template-columns:1fr 1.15fr;gap:16px;padding:20px}
.collaboration-section{min-width:0;padding:17px;border:1px solid #dfe7f2;border-radius:17px;background:#fff}
.collaboration-title{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:13px}
.collaboration-title h3{margin:0;color:#203454;font-size:16px}.collaboration-title>span{color:#71809a;font-size:10px}
.collaboration-list,.member-list{display:grid;gap:8px}
.collaboration-item,.member-list article{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px;border:1px solid #e1e7f0;border-radius:11px;background:#f9fbff}
.collaboration-item>div:first-child,.member-list article>div{min-width:0}
.collaboration-item strong,.collaboration-item span,.member-list strong,.member-list span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.collaboration-item strong,.member-list strong{color:#263a59;font-size:12px}.collaboration-item span,.member-list span{margin-top:3px;color:#7b889e;font-size:9px}
.request-actions{display:flex;gap:5px;flex:0 0 auto}.request-actions button,.member-list article>button{padding:7px 9px;border-radius:8px;font-size:9px}
.request-actions .secondary-action,.member-list article>button{color:#a33d3d;background:#fff0f0}
.collaboration-empty{display:grid;place-items:center;gap:6px;min-height:120px;padding:20px;color:#8793a7;border:1px dashed #d6deeb;border-radius:12px;text-align:center;font-size:11px}
.collaboration-empty strong{color:#42526d}.collaboration-empty span{max-width:280px;line-height:1.6}.collaboration-empty.compact{min-height:64px}
.invite-teacher-form{display:grid;grid-template-columns:1fr auto;gap:8px;align-items:end}
.invite-teacher-form label span{display:block;margin-bottom:6px;color:#455570;font-size:10px;font-weight:800}
.invite-teacher-form input{width:100%;padding:10px 11px;border-radius:9px;background:#fff;font-size:11px}
.invite-teacher-form button{padding:10px 12px;border-radius:9px;font-size:10px}
.invite-result{min-height:15px;margin:7px 0 0;color:#2467eb;font-size:9px}
.member-group{margin-top:16px}.member-group h4{margin:0 0 8px;color:#41516c;font-size:11px}
.class-list .class-item>small{line-height:1.4}
@media(max-width:760px){.collaboration-modal{padding:10px}.collaboration-columns{grid-template-columns:1fr}.collaboration-dialog{max-height:94vh}.collaboration-dialog .collaboration-head{padding:19px}.invite-teacher-form{grid-template-columns:1fr}}

.collaboration-title select{max-width:190px;min-width:130px;padding:8px 28px 8px 10px;border:1px solid #d8e1ee;border-radius:9px;color:#334967;background:#f8faff;font-size:10px;font-weight:800}.collaboration-title select:focus{outline:0;border-color:#77a0f4;box-shadow:0 0 0 3px #2f6ef512}.collaboration-title select:disabled{color:#8995a9;background:#eef2f7}
.class-multi-picker{position:relative;z-index:4}
.class-multi-picker>button{min-width:150px;padding:9px 30px 9px 12px;border:1px solid #d8e1ee;border-radius:10px;color:#334967;background:#f8faff;font-size:10px;font-weight:900;text-align:left}
.class-multi-picker>button:after{content:"";position:absolute;right:12px;top:12px;width:6px;height:6px;border-right:2px solid #64748b;border-bottom:2px solid #64748b;transform:rotate(45deg)}
.class-picker-options{position:absolute;right:0;top:calc(100% + 6px);width:220px;max-height:240px;padding:8px;overflow:auto;border:1px solid #d9e2ef;border-radius:12px;background:#fff;box-shadow:0 16px 36px #10213b30}
.class-picker-options label{display:flex;align-items:center;gap:8px;padding:9px;border-radius:8px;color:#42526d;font-size:10px;font-weight:700;cursor:pointer}
.class-picker-options label:hover{background:#f0f5ff}.class-picker-options label.picker-all{margin-bottom:5px;border-bottom:1px solid #e7ecf4;border-radius:8px 8px 0 0;color:#2467eb}
.class-picker-options input{width:15px;height:15px;margin:0;padding:0;accent-color:#2f73f3}
.picker-empty{padding:14px;color:#8793a7;text-align:center;font-size:10px}
.invite-teacher-form .invitation-submit{color:#fff;background:linear-gradient(110deg,#ff8a34,#ff6b18);box-shadow:0 8px 18px #ff711f35}
.class-collaboration-group{margin-top:9px;padding:11px;border:1px solid #e0e7f1;border-radius:12px;background:#f9fbff}
.class-collaboration-group>h4{margin:0 0 8px;color:#263a59;font-size:11px}
.pending-inline{display:grid;gap:6px;margin-top:7px}
.pending-inline article{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 9px;border-radius:9px;background:#fff7ed}
.pending-inline strong,.pending-inline span{display:block}.pending-inline strong{font-size:10px;color:#594735}.pending-inline span{margin-top:2px;color:#a07043;font-size:8px}
.pending-inline button{padding:6px 8px;border-radius:7px;color:#a33d3d;background:#fff0f0;font-size:8px}


/* mobile-controller-experience */
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
button,input,textarea{touch-action:manipulation}

@media(max-width:820px){
  #appView{padding:8px 0 calc(24px + env(safe-area-inset-bottom));overflow:visible}
  #appView>header,#appView>main{width:calc(100% - 16px)}
  #appView>header{gap:14px;margin-bottom:10px;padding:16px;border-radius:18px}
  #appView .brand h1{font-size:26px}
  #appView .brand p{font-size:12px;line-height:1.55}
  .teacher-panel{display:grid;grid-template-columns:1fr 1fr;gap:8px;width:100%}
  .teacher-panel .status{grid-column:1/-1;justify-self:start}
  .teacher-meta{grid-column:1/-1;grid-row:auto;display:grid!important;grid-template-columns:repeat(3,minmax(0,1fr))!important;width:100%}
  .teacher-meta div{padding:6px 8px!important;border-top:0!important;border-left:1px solid #edf1f8!important}
  .teacher-meta div:first-child{border-left:0!important}
  .teacher-meta small{font-size:9px}
  .teacher-meta strong{font-size:12px}
  .small-button{display:flex;align-items:center;justify-content:center;width:100%;min-height:44px}
  .dashboard-layout{gap:10px}
  .class-sidebar.card{padding:17px 15px;border-radius:18px}
  .sidebar-heading{margin-bottom:12px}
  .sidebar-heading h2{font-size:19px}
  .sidebar-action,.quota-summary button,.sidebar-class-form button{min-height:44px}
  .class-list-label{margin-top:16px}
  .classes.class-list{display:flex;max-width:100%;margin-right:-15px;padding:0 15px 7px 0;overflow-x:auto;overflow-y:hidden;scroll-padding-left:0;scroll-snap-type:x mandatory;overscroll-behavior-x:contain}
  .classes.class-list::-webkit-scrollbar{height:4px;width:auto}
  .class-list .class-item{flex:0 0 min(78vw,280px);scroll-snap-align:start}
  .workspace-grid{gap:10px}
  .workspace-grid>.card,#appView main>.card,.grid>.card{padding:17px;border-radius:18px}
  .heading{align-items:flex-start;flex-wrap:wrap}
  .heading h2{font-size:19px}
  .pill{max-width:100%;overflow:hidden;text-overflow:ellipsis}
  .notice-card textarea{min-height:160px;margin:10px 0;font-size:16px;line-height:1.6}
  .notice-settings{order:2}
  .notice-card #send{order:3;position:sticky;bottom:max(8px,env(safe-area-inset-bottom));z-index:8;min-height:50px;margin-top:14px;box-shadow:0 12px 28px #174fbf52}
  .notice-card .send-result{order:4}
  .notice-settings summary{min-height:48px;padding:12px 4px}
  .setting-row{min-height:54px}
  .choice-grid span{display:grid;place-items:center;min-height:44px;padding:10px 7px}
  .template-item>button:first-child,.template-delete,.template-create button{min-height:44px}
  .template-student-field{grid-template-columns:1fr;gap:6px}
  .template-student-field input,.template-create input,.repeat-input input,.sidebar-class-form input,.quota-form input{font-size:16px}
  .history-card #history{max-height:none}
}

@media(max-width:560px){
  .auth-shell{min-height:100dvh;padding:calc(14px + env(safe-area-inset-top)) 10px calc(14px + env(safe-area-inset-bottom))}
  .auth-card{padding:23px 16px;border-radius:20px}
  .auth-card-head h2{font-size:25px}
  .auth-card .input-wrap{height:52px}
  .auth-card input{font-size:16px}
  .auth-submit{min-height:52px}
  .tabs{gap:7px}
  .tab{min-height:48px;text-align:center}
  #appView .brand h1{font-size:24px}
  .teacher-meta{padding:5px}
  .teacher-meta div{padding:5px 6px!important}
  .teacher-meta strong{font-size:11px}
  .class-count{width:32px;height:32px}
  .quota-summary{grid-template-columns:1fr}
  .quota-summary>button{width:100%}
  .quota-track{grid-column:1}
  .sidebar-class-form>div,.quota-form>div{grid-template-columns:1fr 1fr}
  .duration-grid,.repeat-grid,.template-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .collaboration-modal{align-items:stretch;padding:0}
  .collaboration-dialog{width:100%;height:100dvh;max-height:none;border:0;border-radius:0}
  .collaboration-dialog .collaboration-head{position:sticky;top:0;z-index:10;align-items:center;padding:calc(14px + env(safe-area-inset-top)) 14px 13px;background:#f6f9fef5;backdrop-filter:blur(16px)}
  .collaboration-head h2{font-size:21px}
  .collaboration-head p{font-size:10px;line-height:1.45}
  .collaboration-head>button{flex:0 0 auto;width:44px;height:44px}
  .collaboration-columns{gap:10px;padding:10px 10px calc(16px + env(safe-area-inset-bottom))}
  .collaboration-section{padding:13px;border-radius:14px}
  .collaboration-title{align-items:flex-start;flex-direction:column}
  .class-multi-picker,.class-multi-picker>button{width:100%}
  .class-picker-options{left:0;right:auto;width:100%}
  .collaboration-item,.member-list article{align-items:stretch;flex-direction:column}
  .request-actions{display:grid;grid-template-columns:1fr 1fr;width:100%}
  .request-actions button,.member-list article>button,.invite-teacher-form button{min-height:44px;font-size:11px}
  .invite-teacher-form input{min-height:46px;font-size:16px}
}

@media(max-width:360px){
  #appView>header,#appView>main{width:calc(100% - 10px)}
  #appView>header{padding:13px}
  .teacher-meta{grid-template-columns:1fr 1fr!important}
  .teacher-meta div:nth-child(3){grid-column:1/-1;border-top:1px solid #edf1f8!important;border-left:0!important}
  .class-list .class-item{flex-basis:86vw}
}

/* native-mobile-controller */
.mobile-app-bar,.mobile-bottom-nav,.mobile-profile{display:none}

@media(max-width:820px){
  body{background:#f4f7fb}
  #appView{min-height:100dvh;padding:0 0 calc(78px + env(safe-area-inset-bottom));overflow:visible;background:#f4f7fb}
  #appView:before{display:none}
  #appView>.desktop-header{display:none!important}
  #appView>.mobile-app-bar{position:sticky;top:0;z-index:900;display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;margin:0;padding:calc(11px + env(safe-area-inset-top)) 14px 11px;border:0;border-bottom:1px solid #e4e9f1;border-radius:0;background:#fffffff2;box-shadow:0 5px 20px #17355f10;backdrop-filter:blur(18px)}
  .mobile-brand{display:flex;min-width:0;flex-direction:column}
  .mobile-brand small{color:#3474ef;font-size:10px;font-weight:900;letter-spacing:.12em}
  .mobile-brand strong{margin-top:2px;overflow:hidden;color:#15233c;font-size:20px;line-height:1.2;text-overflow:ellipsis;white-space:nowrap}
  .mobile-class-chip{display:flex;align-items:center;gap:7px;max-width:56%;min-height:38px;padding:8px 11px;border:1px solid #d8e3f4;border-radius:999px;color:#355071;background:#eef4ff;font-size:11px}
  .mobile-class-chip span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .mobile-class-chip i{width:8px;height:8px;flex:0 0 auto;border-radius:50%}
  .mobile-class-chip .online-dot{background:#18ae72;box-shadow:0 0 0 4px #18ae7218}
  .mobile-class-chip .offline-dot{background:#f05a5a;box-shadow:0 0 0 4px #f05a5a18}
  #appView>main.dashboard-layout{display:block;width:100%;margin:0;padding:0}
  .workspace,.workspace-grid{display:contents}
  #appView [data-mobile-page]{display:none!important}
  #appView [data-mobile-page].mobile-page-active{display:block!important}
  #appView [data-mobile-page].mobile-page-active.notice-card{display:flex!important}
  #appView main>.card,.workspace-grid>.card,.class-sidebar.card,.mobile-profile.card{min-height:calc(100dvh - 136px);margin:0;padding:16px 14px 26px;border:0;border-radius:0;background:#f4f7fb;box-shadow:none;backdrop-filter:none}
  .class-sidebar.card{position:static}
  .class-sidebar .sidebar-heading{margin:2px 0 14px}
  .class-sidebar .sidebar-heading h2{font-size:24px}
  .class-sidebar .sidebar-kicker,.notice-card .section-kicker,.history-card .section-kicker{font-size:9px}
  .sidebar-actions{margin-bottom:10px}
  .sidebar-action.primary-action{min-height:50px;border-radius:14px;font-size:14px}
  .quota-summary,.sidebar-class-form,.quota-form{border-radius:15px;background:#fff}
  .class-list-label{margin:20px 2px 10px}
  .classes.class-list{display:flex;max-height:none;margin:0;padding:0;overflow:visible;flex-direction:column;scroll-snap-type:none}
  .class-list .class-item{width:100%;flex:0 0 auto;padding:15px;border:1px solid #e1e7f0;border-radius:15px;background:#fff;box-shadow:0 5px 18px #17355f0a}
  .class-list .class-item+.class-item{margin-top:9px}
  .class-item:hover{transform:none}
  .class-item.selected{border-color:#6c99f2;background:#edf4ff}
  .sidebar-empty{background:#fff}
  .notice-card .heading,.history-card .heading{margin-bottom:8px}
  .notice-card .heading h2,.history-card .heading h2{font-size:24px}
  .notice-card .pill{width:100%;margin-top:4px;padding:9px 11px;border-radius:11px}
  .notice-card textarea{min-height:170px;padding:14px;border-radius:14px;background:#fff}
  .notice-settings{margin-top:4px;border-radius:15px;background:#fff}
  .settings-body{padding-bottom:4px}
  .notice-card #send{bottom:calc(72px + env(safe-area-inset-bottom));margin-top:14px;border-radius:14px}
  .history-card #history{max-height:none}
  .history-card .history-item{padding:14px;border-radius:14px;background:#fff}
  .history-card .empty{min-height:45vh;background:#fff}
  .mobile-profile-head{padding:8px 2px 18px}
  .mobile-profile-head>span{color:#6f83a6;font-size:9px;font-weight:900;letter-spacing:.18em}
  .mobile-profile-head h2{margin:4px 0 6px;font-size:25px}
  .mobile-profile-head p{margin:0;font-size:12px}
  .mobile-profile-list{overflow:hidden;margin-bottom:14px;border:1px solid #e0e7f1;border-radius:16px;background:#fff}
  .mobile-profile-list>div{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:58px;padding:13px 15px;border-top:1px solid #edf1f6}
  .mobile-profile-list>div:first-child{border-top:0}
  .mobile-profile-list span{color:#78869d;font-size:12px}
  .mobile-profile-list strong{overflow:hidden;color:#203454;font-size:14px;text-align:right;text-overflow:ellipsis;white-space:nowrap}
  .mobile-profile-action{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;min-height:52px;margin-top:10px;border:1px solid #d8e3f4;border-radius:14px;color:#2467eb;background:#fff;font-size:14px}
  .mobile-profile-action.danger{border-color:#f2d3d3;color:#b24242;background:#fff7f7}
  .mobile-bottom-nav{position:fixed;left:0;right:0;bottom:0;z-index:950;display:grid;grid-template-columns:repeat(4,1fr);padding:6px 8px calc(6px + env(safe-area-inset-bottom));border-top:1px solid #e1e7ef;background:#fffffff2;box-shadow:0 -7px 24px #17355f12;backdrop-filter:blur(18px)}
  .mobile-bottom-nav button{position:relative;display:flex;align-items:center;justify-content:center;gap:2px;min-height:52px;padding:5px 3px;border-radius:12px;color:#8793a7;background:transparent;flex-direction:column;font-size:10px}
  .mobile-bottom-nav button i{height:20px;font-size:18px;font-style:normal;line-height:20px}
  .mobile-bottom-nav button span{font-weight:800}
  .mobile-bottom-nav button[aria-selected="true"]{color:#2467eb;background:#edf4ff}
  .mobile-nav-badge{position:absolute;top:4px;left:calc(50% + 8px);display:grid;place-items:center;min-width:17px;height:17px;padding:0 4px;border:2px solid #fff;border-radius:999px;color:#fff;background:#ef4444;font-size:8px}
}

@media(max-width:360px){
  .mobile-brand strong{font-size:18px}
  .mobile-class-chip{max-width:52%;padding:7px 9px}
  #appView main>.card,.workspace-grid>.card,.class-sidebar.card,.mobile-profile.card{padding-right:11px;padding-left:11px}
}

/* mobile-notice-visual-fix */
@media(max-width:820px){
  #appView>.mobile-app-bar{align-items:center!important;flex-direction:row!important;gap:10px;margin:0!important;padding:calc(10px + env(safe-area-inset-top)) 14px 10px!important;border-radius:0!important}
  .mobile-brand{flex:1 1 auto}
  .mobile-brand small{font-size:9px}
  .mobile-brand strong{font-size:19px}
  .mobile-class-chip{flex:0 1 auto;max-width:52%;min-height:36px;padding:7px 10px}
  #appView [data-mobile-page].notice-card{padding-top:12px}
  .notice-card>.heading{display:block;margin:0 0 10px}
  .notice-card>.heading>div:first-child{display:none}
  .notice-card .pill{display:block;width:100%;margin:0;padding:10px 12px;border-radius:12px;white-space:normal}
  .notice-card textarea{min-height:150px;margin:6px 0 12px;resize:none}
  .notice-settings{margin-top:0}
  .notice-settings summary{align-items:flex-start;min-height:0;padding:14px 40px 14px 14px;flex-wrap:wrap;line-height:1.35}
  .notice-settings summary small{width:100%;margin:2px 0 0;text-align:left;white-space:normal}
  .notice-settings summary:after{right:16px}
  .settings-body{gap:9px;padding:0 10px 10px}
  .setting-row,.setting-block{border-radius:12px}
  .setting-row{padding:12px}
  .setting-block{padding:12px}
  .setting-title{align-items:flex-start;flex-direction:column;gap:3px;margin-bottom:9px}
  .setting-title small{margin:0;text-align:left}
  .notice-card #send{position:static!important;bottom:auto!important;z-index:auto!important;order:3;margin:14px 0 0;box-shadow:0 10px 22px #2867ed2d}
  .notice-card .send-result{order:4;margin-bottom:0}
}

/* mobile-settings-bottom-sheet */
.mobile-settings-backdrop,.mobile-settings-sheet-head{display:none}

@media(max-width:820px){
  body.mobile-settings-open{overflow:hidden}
  body.mobile-settings-open .mobile-bottom-nav,body.mobile-class-sheet-open .mobile-bottom-nav{display:none}
  .notice-settings[open]>.mobile-settings-backdrop{position:fixed;inset:0;z-index:1200;display:block;width:100%;height:100%;padding:0;border:0;border-radius:0;background:#07172a8a;backdrop-filter:blur(3px)}
  .notice-settings[open]>.settings-body{position:fixed;left:0;right:0;bottom:0;z-index:1201;display:grid;max-height:min(84dvh,760px);padding:0 12px calc(28px + env(safe-area-inset-bottom));overflow-x:hidden;overflow-y:auto;overscroll-behavior:contain;border:0;border-radius:22px 22px 0 0;background:#f5f7fb;box-shadow:0 -18px 55px #06152d42;animation:mobile-sheet-in .22s ease-out}
  .mobile-settings-sheet-head{position:sticky;top:0;z-index:3;display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 -12px 2px;padding:14px 16px 12px;border-bottom:1px solid #e1e7f0;background:#f5f7fbf5;backdrop-filter:blur(14px)}
  .mobile-settings-sheet-head>div{min-width:0}
  .mobile-settings-sheet-head strong,.mobile-settings-sheet-head small{display:block}
  .mobile-settings-sheet-head strong{color:#172944;font-size:18px}
  .mobile-settings-sheet-head small{margin-top:3px;color:#8491a6;font-size:11px}
  .mobile-settings-sheet-head>button{flex:0 0 auto;min-width:64px;min-height:38px;padding:8px 14px;border-radius:999px;color:#fff;background:#2d6ff0;font-size:13px}
  .notice-settings[open]>.settings-body>.setting-row,.notice-settings[open]>.settings-body>.setting-block{background:#fff}
  .notice-settings[open] summary{position:relative;z-index:0}
}

@keyframes mobile-sheet-in{
  from{transform:translateY(100%)}
  to{transform:translateY(0)}
}

@media(prefers-reduced-motion:reduce){
  .notice-settings[open]>.settings-body{animation:none}
}

/* mobile-header-brand-icon */
@media(max-width:820px){
  .mobile-brand{display:flex;align-items:center;gap:10px;flex-direction:row!important}
  .mobile-brand img{display:block;width:38px;height:38px;flex:0 0 38px;border-radius:11px;box-shadow:0 5px 14px #204f9d25}
  .mobile-brand strong{margin:0;font-size:20px;line-height:1.2}
}

@media(max-width:360px){
  .mobile-brand{gap:8px}
  .mobile-brand img{width:34px;height:34px;flex-basis:34px;border-radius:10px}
  .mobile-brand strong{font-size:18px}
}

/* mobile-settings-button-menu */
.mobile-settings-menu,.mobile-settings-panel-head{display:none}

@media(max-width:820px){
  .mobile-settings-menu{display:grid;gap:9px;padding:2px 0}
  .mobile-settings-menu>button{position:relative;display:grid;grid-template-columns:42px minmax(0,1fr) auto 14px;align-items:center;gap:10px;width:100%;min-height:70px;padding:11px 12px;border:1px solid #e0e7f1;border-radius:14px;color:#243754;background:#fff;text-align:left;box-shadow:0 4px 14px #17355f08}
  .mobile-settings-menu>button>i{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;color:#2d6ff0;background:#edf4ff;font-size:20px;font-style:normal}
  .mobile-settings-menu>button>span{min-width:0}
  .mobile-settings-menu>button strong,.mobile-settings-menu>button small{display:block}
  .mobile-settings-menu>button strong{font-size:14px}
  .mobile-settings-menu>button small{margin-top:4px;overflow:hidden;color:#8491a6;font-size:10px;font-weight:500;text-overflow:ellipsis;white-space:nowrap}
  .mobile-settings-menu>button>em{max-width:82px;overflow:hidden;color:#4672bd;font-size:10px;font-style:normal;text-align:right;text-overflow:ellipsis;white-space:nowrap}
  .mobile-settings-menu>button>b{color:#91a0b6;font-size:22px;font-weight:400}
  .settings-body:not([data-active-panel])>[data-setting-panel]{display:none!important}
  .settings-body[data-active-panel]>.mobile-settings-sheet-head,.settings-body[data-active-panel]>.mobile-settings-menu{display:none}
  .settings-body[data-active-panel]>.mobile-settings-panel-head{position:sticky;top:0;z-index:4;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:8px;margin:0 -12px 4px;padding:12px 12px 11px;border-bottom:1px solid #e1e7f0;background:#f5f7fbf5;backdrop-filter:blur(14px)}
  .mobile-settings-panel-head strong{overflow:hidden;color:#172944;font-size:17px;text-align:center;text-overflow:ellipsis;white-space:nowrap}
  .mobile-settings-panel-head button{min-height:38px;padding:8px 11px;border-radius:999px;color:#2d6ff0;background:#e8f0ff;font-size:12px}
  .mobile-settings-panel-head button:last-child{color:#fff;background:#2d6ff0}
  .settings-body[data-active-panel]>[data-setting-panel]{display:none!important}
  .settings-body[data-active-panel="speech"]>[data-setting-panel="speech"]{display:flex!important}
  .settings-body[data-active-panel="templates"]>[data-setting-panel="templates"],.settings-body[data-active-panel="repeat"]>[data-setting-panel="repeat"],.settings-body[data-active-panel="display"]>[data-setting-panel="display"],.settings-body[data-active-panel="duration"]>[data-setting-panel="duration"]{display:block!important}
  .settings-body[data-active-panel]>[data-setting-panel]{margin-top:2px;animation:mobile-panel-in .18s ease-out}
  .settings-body[data-active-panel="speech"]>[data-setting-panel="speech"]{min-height:88px}
}

@keyframes mobile-panel-in{
  from{opacity:0;transform:translateX(12px)}
  to{opacity:1;transform:translateX(0)}
}

@media(max-width:380px){
  .mobile-settings-menu>button{grid-template-columns:38px minmax(0,1fr) 12px}
  .mobile-settings-menu>button>i{width:38px;height:38px}
  .mobile-settings-menu>button>em{display:none}
}

/* mobile-settings-inline-buttons */
@media(max-width:820px){
  .notice-card>.mobile-settings-menu{order:1;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:0 0 12px;padding:0}
  .notice-card>.mobile-settings-menu>button{grid-template-columns:34px minmax(0,1fr) 12px;grid-template-rows:auto auto;gap:1px 8px;min-height:64px;padding:9px 10px;border-radius:13px}
  .notice-card>.mobile-settings-menu>button>i{grid-column:1;grid-row:1/3;width:34px;height:34px;border-radius:10px;font-size:17px}
  .notice-card>.mobile-settings-menu>button>span{grid-column:2;grid-row:1}
  .notice-card>.mobile-settings-menu>button>span strong{overflow:hidden;font-size:12px;text-overflow:ellipsis;white-space:nowrap}
  .notice-card>.mobile-settings-menu>button>span small{display:none}
  .notice-card>.mobile-settings-menu>button>em{grid-column:2;grid-row:2;max-width:none;overflow:hidden;font-size:9px;text-align:left;text-overflow:ellipsis;white-space:nowrap}
  .notice-card>.mobile-settings-menu>button>b{grid-column:3;grid-row:1/3;align-self:center;font-size:19px}
  .notice-settings{order:2;margin:0;border:0;background:transparent;overflow:visible}
  .notice-settings>summary{display:none}
}

@media(max-width:360px){
  .notice-card>.mobile-settings-menu{gap:7px}
  .notice-card>.mobile-settings-menu>button{grid-template-columns:30px minmax(0,1fr) 10px;padding:8px;column-gap:6px}
  .notice-card>.mobile-settings-menu>button>i{display:grid;width:30px;height:30px;font-size:15px}
  .notice-card>.mobile-settings-menu>button>em{display:block}
}
/* mobile-class-action-sheet */
.mobile-class-sheet{display:none}
.mobile-class-entry b{display:none}
@media(max-width:820px){
  body.mobile-class-sheet-open{overflow:hidden}
  .notice-card .mobile-class-entry{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:54px;color:#2467eb;text-align:left;cursor:pointer}
  .notice-card .mobile-class-entry>span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .notice-card .mobile-class-entry>b{display:block;color:#7890b2;font-size:24px;font-weight:400;line-height:1}
  .mobile-class-sheet:not(.hidden){position:fixed;inset:0;z-index:1300;display:block}
  .mobile-class-backdrop{position:absolute;inset:0;width:100%;height:100%;padding:0;border:0;border-radius:0;background:#07172a94;backdrop-filter:blur(3px)}
  .mobile-class-dialog{position:absolute;left:0;right:0;bottom:0;display:flex;max-height:min(86dvh,780px);padding:0 12px calc(18px + env(safe-area-inset-bottom));overflow-x:hidden;overflow-y:auto;overscroll-behavior:contain;border-radius:24px 24px 0 0;background:#f5f7fb;box-shadow:0 -18px 55px #06152d42;flex-direction:column;animation:mobile-sheet-in .22s ease-out}
  .mobile-class-dialog>header{position:sticky;top:0;z-index:3;display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 -12px;padding:15px 16px 13px;border-bottom:1px solid #e1e7f0;background:#f5f7fbf5;backdrop-filter:blur(14px)}
  .mobile-class-dialog>header strong,.mobile-class-dialog>header small{display:block}.mobile-class-dialog>header strong{color:#172944;font-size:18px}.mobile-class-dialog>header small{margin-top:3px;color:#8491a6;font-size:11px}
  .mobile-class-dialog>header>button{min-width:64px;min-height:38px;padding:8px 14px;border-radius:999px;color:#fff;background:#2d6ff0;font-size:13px}
  .mobile-class-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:12px 0}
  .mobile-class-actions>button{display:grid;grid-template-columns:38px minmax(0,1fr);align-items:center;gap:9px;min-height:66px;padding:10px;border:1px solid #dfe7f2;border-radius:14px;color:#203654;background:#fff;text-align:left;box-shadow:0 4px 14px #17355f08}
  .mobile-class-actions>button>i{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;color:#2d6ff0;background:#edf4ff;font-size:18px;font-style:normal}.mobile-class-actions strong,.mobile-class-actions small{display:block}.mobile-class-actions strong{font-size:13px}.mobile-class-actions small{margin-top:3px;overflow:hidden;color:#8491a6;font-size:9px;text-overflow:ellipsis;white-space:nowrap}
  .mobile-class-inline-form{margin:0 0 12px;padding:12px;border:1px solid #dbe5f2;border-radius:14px;background:#fff}.mobile-class-inline-form label>span{display:block;margin-bottom:7px;color:#52647d;font-size:11px;font-weight:800}.mobile-class-inline-form input{width:100%;min-height:48px;padding:11px 13px;border:1px solid #d5dfed;border-radius:12px;background:#fbfcff;font-size:16px}.mobile-class-inline-form>div{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:9px}.mobile-class-inline-form button{min-height:44px;border-radius:11px;color:#fff;background:#2d6ff0;font-size:12px}.mobile-class-inline-form button+button{color:#5d6e86;background:#edf1f7}.mobile-class-inline-form>p{margin:8px 2px 0;color:#d24b4b;font-size:11px}
  .mobile-class-switch-title{display:flex;align-items:end;justify-content:space-between;gap:12px;margin:3px 2px 9px}.mobile-class-switch-title strong{color:#253a59;font-size:14px}.mobile-class-switch-title small{color:#8a97aa;font-size:10px}
  .mobile-class-options{display:grid;gap:8px}.mobile-class-options>button{display:grid;grid-template-columns:10px minmax(0,1fr) auto;align-items:center;gap:10px;min-height:66px;padding:11px 13px;border:1px solid #dfe7f2;border-radius:14px;color:#263a57;background:#fff;text-align:left}.mobile-class-options>button>i{width:9px;height:9px;border-radius:50%}.mobile-class-options>button span{min-width:0}.mobile-class-options>button strong,.mobile-class-options>button small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mobile-class-options>button strong{font-size:14px}.mobile-class-options>button small{margin-top:4px;color:#8491a6;font-size:10px}.mobile-class-options>button>b{padding:5px 8px;border-radius:999px;color:#6c7e96;background:#eef2f7;font-size:10px}.mobile-class-options>button.selected{border-color:#82a9f6;background:#edf4ff}.mobile-class-options>button.selected>b{color:#2467eb;background:#dce9ff}
  .mobile-class-empty{padding:24px 14px;border:1px dashed #ced9e8;border-radius:14px;color:#7d8ba0;background:#fff;text-align:center}.mobile-class-empty strong,.mobile-class-empty span{display:block}.mobile-class-empty strong{color:#40536f;font-size:14px}.mobile-class-empty span{margin-top:6px;font-size:11px}
}
@media(max-width:360px){.mobile-class-actions{gap:7px}.mobile-class-actions>button{grid-template-columns:34px minmax(0,1fr);padding:8px}.mobile-class-actions>button>i{width:34px;height:34px}}
/* mobile-class-list-first */
@media(max-width:820px){
  .mobile-class-dialog>header{order:0}
  .mobile-class-switch-title{order:1;margin-top:14px}
  .mobile-class-options{order:2}
  .mobile-class-actions{order:3;margin-top:14px}
  .mobile-class-inline-form{order:4}
}
/* mobile-class-form-popups */
@media(max-width:820px){
  .mobile-class-inline-form:not(.hidden){position:fixed;left:max(14px,calc((100vw - 520px)/2));right:max(14px,calc((100vw - 520px)/2));bottom:calc(18px + env(safe-area-inset-bottom));z-index:1402;display:block;max-height:calc(100dvh - 36px);margin:0;padding:18px;border:1px solid #dbe5f2;border-radius:22px;background:#fff;box-shadow:0 0 0 100vmax #07172aa6,0 -16px 50px #06152d42;animation:mobile-sheet-in .2s ease-out}
  .mobile-class-inline-form:not(.hidden) label>span{margin-bottom:11px;color:#172944;font-size:18px}
  .mobile-class-inline-form:not(.hidden) input{min-height:54px;padding:13px 14px;border-radius:13px}
  .mobile-class-inline-form:not(.hidden)>div{margin-top:12px}
  .mobile-class-inline-form:not(.hidden) button{min-height:48px;font-size:13px}
}
/* mobile-class-quota-top-done-bottom */
@media(max-width:820px){
  .mobile-class-dialog{padding-bottom:calc(92px + env(safe-area-inset-bottom))}
  .mobile-class-dialog>header{display:block;padding:16px;text-align:center}
  .mobile-class-dialog>header>div{display:flex;align-items:center;flex-direction:column}
  #mobileClassQuota{order:-1;margin:0 0 5px;color:#2467eb;font-size:23px;font-weight:900;line-height:1.15}
  #mobileClassSheetTitle{color:#53647d;font-size:14px;font-weight:800}
  .mobile-class-dialog>header>#closeMobileClassSheet{position:fixed;left:max(14px,calc((100vw - 520px)/2));right:max(14px,calc((100vw - 520px)/2));bottom:calc(14px + env(safe-area-inset-bottom));z-index:1320;width:auto;min-height:54px;padding:12px 18px;border-radius:15px;color:#fff;background:#2d6ff0;box-shadow:0 10px 28px #1d58c943;font-size:16px;font-weight:900}
}
/* mobile-three-tab-navigation */
@media(max-width:820px){
  .mobile-bottom-nav{grid-template-columns:repeat(3,1fr)}
}
/* mobile-class-real-top-and-bottom */
@media(max-width:820px){
  .mobile-class-dialog{padding-bottom:calc(12px + env(safe-area-inset-bottom))}
  .mobile-class-dialog>header{order:0}
  .mobile-class-dialog>header>div{display:flex;align-items:center;flex-direction:column}
  #mobileClassQuota{order:-1;display:block;margin:0 0 6px;color:#2467eb;font-size:24px;font-weight:900;line-height:1.15}
  #mobileClassSheetTitle{display:block;color:#53647d;font-size:14px;font-weight:800}
  .mobile-class-dialog>.mobile-class-done{position:sticky;left:auto;right:auto;bottom:0;z-index:6;order:5;width:100%;min-height:54px;margin:18px 0 0;padding:12px 18px;border-radius:15px;color:#fff;background:#2d6ff0;box-shadow:0 10px 28px #1d58c943;font-size:16px;font-weight:900}
}
/* mobile-two-tab-navigation */
@media(max-width:820px){
  .mobile-bottom-nav{grid-template-columns:repeat(2,1fr)}
}
.role-hidden{display:none!important}
@media(max-width:820px){.display-template-grid{grid-template-columns:1fr}.display-template-preview{min-height:92px}}

/* mobile-class-binding-code */
@media(max-width:820px){
  .mobile-class-options>article{display:grid;grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:8px;min-height:72px;padding:10px 11px;border:1px solid #dfe7f2;border-radius:14px;background:#fff}
  .mobile-class-options>article.selected{border-color:#82a9f6;background:#edf4ff}
  .mobile-class-main{display:grid;grid-template-columns:10px minmax(0,1fr);align-items:center;gap:10px;min-width:0;padding:0;color:#263a57;background:transparent;text-align:left}
  .mobile-class-main>i{width:9px;height:9px;border-radius:50%}
  .mobile-class-main>span{min-width:0}
  .mobile-class-main strong,.mobile-class-main small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .mobile-class-main strong{font-size:14px}.mobile-class-main small{margin-top:4px;color:#8491a6;font-size:10px}
  .mobile-class-code{display:flex;align-items:center;justify-content:center;min-width:86px;min-height:48px;padding:5px 9px;border:1px solid #d8e4f5;border-radius:11px;color:#2467eb;background:#f3f7ff;flex-direction:column}
  .mobile-class-code small,.mobile-class-code strong,.mobile-class-code em{display:block;line-height:1.15}
  .mobile-class-code small{color:#8292aa;font-size:8px}.mobile-class-code strong{margin-top:2px;font-size:13px;letter-spacing:.06em}.mobile-class-code em{margin-top:2px;color:#6082b9;font-size:8px;font-style:normal}
  .mobile-class-code-empty{min-width:86px;color:#9aa6b8;font-size:10px;text-align:center}
  .mobile-class-switch-button{padding:6px 9px;border-radius:999px;color:#6c7e96;background:#eef2f7;font-size:10px}
  .mobile-class-options>article.selected>.mobile-class-switch-button{color:#2467eb;background:#dce9ff}
}
@media(max-width:380px){
  .mobile-class-options>article{grid-template-columns:minmax(0,1fr) 76px auto;gap:6px;padding:9px}
  .mobile-class-code,.mobile-class-code-empty{min-width:76px}
  .mobile-class-code{padding-right:6px;padding-left:6px}
  .mobile-class-switch-button{padding-right:7px;padding-left:7px}
}
/* mobile-collaboration-bottom-sheet */
@media(max-width:820px){
  body.mobile-collaboration-open{overflow:hidden}
  body.mobile-collaboration-open .mobile-bottom-nav{display:none}
  .collaboration-modal{display:flex;align-items:flex-end;justify-content:center;padding:0;background:#07172a94;backdrop-filter:blur(3px)}
  .collaboration-dialog{width:min(560px,100%);height:auto;max-height:88dvh;overflow-x:hidden;overflow-y:auto;overscroll-behavior:contain;border:0;border-radius:24px 24px 0 0;background:#f5f7fb;box-shadow:0 -18px 55px #06152d42;animation:mobile-sheet-in .22s ease-out}
  .collaboration-dialog .collaboration-head{position:sticky;top:0;z-index:10;align-items:center;padding:15px 16px 13px;background:#f5f7fbf5;backdrop-filter:blur(14px)}
  .collaboration-head .section-kicker{display:none}
  .collaboration-head h2{margin:0 0 3px;font-size:20px}
  .collaboration-head p{font-size:10px;line-height:1.4}
  .collaboration-head>button{width:40px;height:40px;border-radius:12px}
  .collaboration-columns{padding:10px 10px calc(18px + env(safe-area-inset-bottom))}
}
/* mobile-collaboration-no-header */
@media(max-width:820px){
  .collaboration-dialog .collaboration-head{display:none}
  .collaboration-columns{padding-top:12px}
}
/* mobile-collaboration-current-first */
@media(max-width:820px){
  .collaboration-columns>.collaboration-section[data-teacher-only]{order:-1}
}
/* mobile-collaboration-panel-buttons */
.mobile-collaboration-panel-buttons,.mobile-collaboration-subpanel-head{display:none}
@media(max-width:820px){
  .collaboration-dialog{position:relative}
  .mobile-collaboration-panel-buttons{display:grid;gap:8px;margin:10px 0 4px}
  .mobile-collaboration-panel-buttons>button{display:grid;grid-template-columns:minmax(0,1fr) auto 14px;align-items:center;gap:8px;min-height:64px;padding:11px 12px;border:1px solid #dfe7f2;border-radius:14px;color:#263a57;background:#f8faff;text-align:left}
  .mobile-collaboration-panel-buttons span{min-width:0}.mobile-collaboration-panel-buttons strong,.mobile-collaboration-panel-buttons small{display:block}.mobile-collaboration-panel-buttons strong{font-size:13px}.mobile-collaboration-panel-buttons small{margin-top:4px;color:#8491a6;font-size:9px}.mobile-collaboration-panel-buttons em{color:#4672bd;font-size:10px;font-style:normal}.mobile-collaboration-panel-buttons b{color:#91a0b6;font-size:21px;font-weight:400}
  .collaboration-modal.teacher-mode #collaborationRequestsSection,.collaboration-modal.teacher-mode .member-group{display:none}
  .collaboration-modal.teacher-mode #collaborationRequestsSection.mobile-collaboration-panel-open,.collaboration-modal.teacher-mode .member-group.mobile-collaboration-panel-open{position:absolute;inset:0;z-index:30;display:block;margin:0;padding:0 12px calc(18px + env(safe-area-inset-bottom));overflow-x:hidden;overflow-y:auto;overscroll-behavior:contain;border:0;border-radius:24px 24px 0 0;background:#f5f7fb}
  .mobile-collaboration-subpanel-head{position:sticky;top:0;z-index:3;display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 -12px 10px;padding:14px 16px 12px;border-bottom:1px solid #e1e7f0;background:#f5f7fbf5;backdrop-filter:blur(14px)}
  .mobile-collaboration-subpanel-head strong{color:#172944;font-size:17px}.mobile-collaboration-subpanel-head button{min-width:64px;min-height:38px;padding:8px 14px;border-radius:999px;color:#fff;background:#2d6ff0;font-size:12px}
  .collaboration-modal.teacher-mode .member-group.mobile-collaboration-panel-open>h4{display:none}
  .collaboration-modal.teacher-mode #collaborationRequestsSection.mobile-collaboration-panel-open>.collaboration-title{margin:2px 0 10px}
}
/* mobile-collaboration-subpanel-header-visibility */
@media(max-width:820px){
  .mobile-collaboration-subpanel-head{display:none}
  .mobile-collaboration-panel-open>.mobile-collaboration-subpanel-head{display:flex}
}
/* mobile-collaboration-class-picker-large */
@media(max-width:820px){
  .class-multi-picker>button{min-height:58px;padding:14px 48px 14px 16px;border-radius:14px;font-size:14px;line-height:1.25}
  .class-multi-picker>button:after{right:18px;top:21px;width:9px;height:9px;border-width:0 3px 3px 0}
  .class-picker-options{margin-top:7px;padding:8px;border-radius:14px}
  .class-picker-options label{min-height:48px;padding:11px 10px;font-size:13px}
  .class-picker-options input{width:20px;height:20px}
}
/* mobile-collaboration-request-dot */
@media(max-width:820px){
  #mobileCollaborationRequestCount{display:flex;align-items:center;justify-content:flex-end;gap:6px}
  #mobileCollaborationRequestCount>i{display:none;width:9px;height:9px;flex:0 0 9px;border-radius:50%;background:#ef4444;box-shadow:0 0 0 4px #ef44441a}
  #mobileCollaborationRequestCount.has-alert>i{display:block}
}
/* template-single-line-expandable-list */
.template-preview-toggle{width:30px;padding:0;color:#7185a5;background:#f2f6fc;font-size:17px}
.template-preview-toggle span{display:block;transition:transform .18s}
.template-preview{display:none;margin:0;padding:9px 10px;border-top:1px solid #e5ebf4;color:#607089;background:#fff;font-size:9px;line-height:1.55}
.template-item.expanded .template-preview{display:block}
.template-item.expanded .template-preview-toggle span{transform:rotate(180deg)}
@media(max-width:820px){
  .template-list{grid-template-columns:1fr!important;gap:7px}
  .template-item{display:grid;grid-template-columns:minmax(0,1fr) auto 42px;align-items:center;min-height:54px;border-radius:12px;overflow:hidden}
  .template-item>.template-use{grid-column:1;grid-row:1;display:block;min-width:0;min-height:54px;padding:13px 12px;color:#263a5d;background:transparent;text-align:left}
  .template-item>.template-use strong{display:block;overflow:hidden;font-size:12px;text-overflow:ellipsis;white-space:nowrap}
  .template-item>em{position:static;grid-column:2;grid-row:1;margin:0 7px 0 0;padding:3px 7px;font-size:8px;white-space:nowrap}
  .template-item>.template-delete{grid-column:2;grid-row:1;width:42px;min-height:54px;padding:0;border-radius:0;font-size:18px}
  .template-item>.template-preview-toggle{grid-column:3;grid-row:1;width:42px;min-height:54px;padding:0;border-left:1px solid #e3eaf4;background:#f5f8fd;font-size:20px}
  .template-item>.template-preview{grid-column:1/-1;grid-row:2;padding:11px 12px;font-size:11px;line-height:1.55;white-space:normal}
}
/* mobile-template-fixed-scroll-list */
@media(max-width:820px){
  .template-block .template-list{
    height:310px;
    min-height:310px;
    max-height:310px;
    align-content:start;
    grid-auto-rows:max-content;
    overflow-x:hidden;
    overflow-y:auto;
    overscroll-behavior:contain;
    scrollbar-gutter:stable;
    -webkit-overflow-scrolling:touch;
    padding-right:3px;
  }
  .template-block .template-list::-webkit-scrollbar{width:5px}
  .template-block .template-list::-webkit-scrollbar-track{background:transparent}
  .template-block .template-list::-webkit-scrollbar-thumb{border-radius:999px;background:#c9d5e8}
}

/* template-edit-dialog */
.template-edit-button{width:52px;flex:0 0 52px;padding:0 8px;border-left:1px solid #e3eaf4;color:#2467eb;background:#f2f6ff;font-size:10px;font-weight:900}
.template-edit-modal{position:fixed;inset:0;z-index:15000;display:flex;align-items:center;justify-content:center;padding:20px;background:#07172ab8;backdrop-filter:blur(4px)}
.template-edit-dialog{width:min(460px,100%);padding:22px;border-radius:20px;background:#fff;box-shadow:0 24px 70px #06152d55}
.template-edit-dialog h3{margin:0;color:#172944;font-size:20px}.template-edit-dialog p{margin:5px 0 16px;color:#8190a7;font-size:12px}
.template-edit-dialog textarea{display:block;width:100%;min-height:120px;padding:14px;border:1px solid #d5dfed;border-radius:13px;outline:0;resize:vertical;color:#203454;background:#fbfcff;font:inherit;font-size:15px;line-height:1.55;box-sizing:border-box}
.template-edit-dialog textarea:focus{border-color:#6e9cf5;box-shadow:0 0 0 4px #2f6ef512}
.template-edit-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}.template-edit-actions button{min-height:48px;border-radius:12px;font-size:14px;font-weight:900}.template-edit-actions button:first-child{color:#61718a;background:#edf1f7}.template-edit-actions button:last-child{color:#fff;background:#2d6ff0}
body.template-edit-open{overflow:hidden}
@media(max-width:820px){
  .template-item{grid-template-columns:minmax(0,1fr) auto 58px}
  .template-item>.template-edit-button{grid-column:3;grid-row:1;width:58px;min-height:54px;padding:0;border-left:1px solid #e3eaf4;color:#2467eb;background:#f2f6ff;font-size:11px}
  .template-edit-modal{align-items:flex-end;padding:0;background:#07172a94}
  .template-edit-dialog{width:100%;padding:20px 18px calc(20px + env(safe-area-inset-bottom));border-radius:24px 24px 0 0;animation:mobile-sheet-in .22s ease-out}
  .template-edit-dialog textarea{min-height:132px;font-size:16px}
}

/* mobile-history-empty-action */
.history-empty strong,.history-empty span{display:block}.history-empty strong{color:#203454;font-size:15px}.history-empty span{margin-top:6px;color:#8190a7;font-size:11px}
.history-empty button{margin-top:16px;padding:11px 18px;border-radius:11px;color:#fff;background:#2d6ff0;font-size:12px;font-weight:900}
@media(max-width:820px){
  .history-card .heading{display:flex;align-items:center;justify-content:space-between}
  .history-empty{padding:56px 18px!important;text-align:center}
  .history-empty button{width:100%;min-height:48px;font-size:14px}
}

/* mobile-binding-code-inline */
@media(max-width:820px){
  .mobile-class-options>article{grid-template-columns:minmax(0,1fr) 120px auto}
  .mobile-class-code{
    width:120px;
    min-width:120px;
    min-height:42px;
    padding:7px 8px;
    gap:5px;
    flex-direction:row;
    white-space:nowrap;
  }
  .mobile-class-code small,.mobile-class-code strong,.mobile-class-code em{display:inline;margin:0;line-height:1}
  .mobile-class-code small{font-size:8px}
  .mobile-class-code strong{font-size:13px;letter-spacing:.04em}
  .mobile-class-code em{font-size:8px}
}
@media(max-width:420px){
  .mobile-class-options>article{grid-template-columns:minmax(0,1fr) 112px auto}
  .mobile-class-code{width:112px;min-width:112px;padding-right:6px;padding-left:6px;gap:4px}
}

/* one-time-class-binding-code */
.class-binding-actions{display:grid;grid-template-columns:minmax(0,1fr);align-items:stretch;gap:7px;margin-top:11px}
.class-binding-actions .class-binding-code{min-width:0;margin-top:0}
.class-binding-actions .class-binding-code strong{overflow:visible;text-overflow:clip;white-space:nowrap}
.class-binding-used{display:flex;align-items:center;justify-content:center;min-height:38px;padding:8px;border:1px dashed #cad5e7;border-radius:10px;color:#8491a6;background:#f5f7fb;font-size:10px;font-weight:800}
.class-binding-refresh{width:100%;min-height:34px;padding:7px 10px;border:1px solid #ffb278;border-radius:10px;color:#d85c0b;background:#fff4e9;font-size:10px;font-weight:900;white-space:nowrap;transition:.2s}
.class-binding-refresh:hover{border-color:#ff7a1a;color:#fff;background:#ff7a1a}.class-binding-refresh:disabled,.mobile-binding-refresh:disabled{cursor:wait;opacity:.55}
.binding-refresh-confirm{display:grid;gap:9px;padding:14px;border:1px solid #ffc89f;border-radius:13px;background:#fffaf5;box-shadow:0 16px 38px #52200630}.binding-refresh-popover{position:fixed;z-index:12000}.binding-refresh-confirm>strong{color:#73370f;font-size:13px;font-weight:900}.binding-refresh-confirm>span{color:#9b4b18;font-size:11px;font-weight:700;line-height:1.5}.binding-refresh-confirm>div{display:grid;grid-template-columns:1fr 1.25fr;gap:7px}.binding-refresh-confirm button{min-height:32px;padding:6px 8px;border:1px solid #e1e6ee;border-radius:8px;color:#63718a;background:#fff;font-size:10px;font-weight:900}.binding-refresh-confirm [data-binding-refresh-confirm]{border-color:#ff8d3c;color:#fff;background:#f47721}
@media(max-width:820px){
  .mobile-class-options>article{grid-template-columns:minmax(0,1fr) 124px auto}
  .mobile-binding-actions{display:grid;width:124px;gap:4px}
  .mobile-binding-actions .mobile-class-code,.mobile-binding-actions .mobile-class-code-empty{width:100%;min-width:0}
  .mobile-binding-actions .mobile-class-code{min-height:34px;padding:5px 6px}
  .mobile-binding-actions .mobile-class-code-empty{display:flex;align-items:center;justify-content:center;min-height:31px;border:1px dashed #d7e0ed;border-radius:9px;background:#f7f9fc}
  .mobile-binding-refresh{width:100%;min-height:26px;padding:5px 7px;border:1px solid #ffb278;border-radius:8px;color:#d85c0b;background:#fff4e9;font-size:9px;font-weight:900}
  .binding-refresh-popover{max-width:calc(100vw - 24px);padding:12px}.binding-refresh-confirm>div{grid-template-columns:1fr 1fr}.binding-refresh-confirm button{min-height:36px;font-size:11px}
}
@media(max-width:420px){
  .mobile-class-options>article{grid-template-columns:minmax(0,1fr) 112px auto}
  .mobile-binding-actions{width:112px}
}

/* remove-mobile-target-bar */
@media(max-width:820px){
  .notice-card>.heading{display:none!important}
}


/* used-binding-code-status */
.class-binding-code.is-used,.mobile-class-code.is-used{cursor:default}
.class-binding-code.is-used strong,.mobile-class-code.is-used strong{opacity:1}
.class-binding-code.is-used em,.mobile-class-code.is-used em{visibility:visible;color:#df4038;font-weight:900}
.class-binding-code.is-used:disabled,.mobile-class-code.is-used:disabled{opacity:1}
@media(max-width:820px){
  .mobile-class-options>article{grid-template-columns:minmax(0,1fr) 140px auto}
  .mobile-binding-actions{width:140px}
  .mobile-binding-actions .mobile-class-code{display:grid;grid-template-columns:auto minmax(48px,1fr) auto;align-items:center;justify-content:stretch;gap:4px}
  .mobile-binding-actions .mobile-class-code small,.mobile-binding-actions .mobile-class-code strong,.mobile-binding-actions .mobile-class-code em{display:block;min-width:0;margin:0;white-space:nowrap}
  .mobile-binding-actions .mobile-class-code strong{overflow:visible;color:#155fe8;text-align:center;text-overflow:clip}
  .mobile-binding-actions .mobile-class-code em{text-align:center}
  .mobile-binding-actions .mobile-class-code.is-used em{padding:2px 4px;border:1px solid #ef8b84;border-radius:4px;background:#fff7f5}
}
@media(max-width:420px){
  .mobile-class-options>article{grid-template-columns:minmax(0,1fr) 132px auto}
  .mobile-binding-actions{width:132px}
}

.notice-heading-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;min-width:0}.class-lock-button{padding:9px 15px;border:1px solid #ffb4a8;border-radius:999px;color:#c43220;background:#fff2ef;font-size:13px;font-weight:800;white-space:nowrap;box-shadow:0 6px 14px #bd2d1714}.class-lock-button:hover:not(:disabled){background:#ffe7e2}.class-lock-button.is-locked{border-color:#77a3ff;color:#fff;background:#2e6cf6;box-shadow:0 8px 18px #2e6cf633}.class-lock-button:disabled{cursor:not-allowed;opacity:.48}@media(max-width:820px){.notice-card>.heading{align-items:flex-start;gap:10px}.notice-heading-actions{max-width:68%;flex-wrap:wrap}.class-lock-button{padding:8px 12px}.notice-heading-actions .mobile-class-entry{max-width:100%}}
@media(max-width:820px){#mobileClassLock.is-locked{border-color:#8fb3ff;background:#edf4ff;box-shadow:inset 0 0 0 1px #bdd1ff}#mobileClassLock.is-locked>i{color:#fff;background:#2d6ff0}#mobileClassLock.is-locked strong,#mobileClassLock.is-locked em{color:#1e62e7}.mobile-settings-menu>button:disabled{cursor:not-allowed;opacity:.55}}
/* forgot-password */
.auth-forgot{margin:-8px 2px -3px;text-align:right}.auth-forgot button{padding:2px 0;border:0;border-radius:0;color:#2467eb;background:transparent;font-size:12px;font-weight:800}.auth-forgot button:hover{text-decoration:underline}.auth-result.success{color:#087f5b}
/* auth-classbell-brand */
.auth-brand-icon{display:block;width:46px;height:46px;flex:0 0 auto;border-radius:13px;object-fit:cover;box-shadow:0 14px 30px #06142c52}
/* dashboard-classbell-brand */
.brand-product{display:flex;align-items:center;gap:8px}.brand-product img{display:block;width:24px;height:24px;flex:0 0 auto;border-radius:7px;object-fit:cover;box-shadow:0 4px 10px #16499d26}#appView .brand-product b:before{display:none}#appView .brand-product b{font-size:14px}

/* class-and-history-management */
.class-manage-actions{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-top:8px}
.class-manage-actions button{padding:8px 10px;border:1px solid #dbe4f0;border-radius:9px;background:#fff;font-size:10px;font-weight:900}
.class-manage-actions .class-edit-button{color:#2467eb;background:#f2f6ff}
.class-manage-actions .class-delete-button{color:#c53d3d;background:#fff3f3}
.class-manage-actions button:hover{filter:brightness(.98)}
.history-item-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.history-delete-button{flex:0 0 auto;padding:6px 9px;border:1px solid #f1caca;border-radius:8px;color:#c53d3d;background:#fff3f3;font-size:10px;font-weight:900}
.history-delete-button:hover{border-color:#eaa7a7;background:#ffe9e9}
.mobile-class-manage-actions{grid-column:1/-1;margin:0 9px 9px}
@media(max-width:820px){.history-delete-button{min-height:38px;padding:8px 12px;font-size:12px}.mobile-class-manage-actions button{min-height:38px;font-size:11px}}