:root{color:#1d1d1f;font-synthesis:none;background:#f5f5f7;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button{cursor:pointer;border:0}button:disabled{opacity:.42;cursor:not-allowed}.shell{min-height:100vh}.topbar{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);z-index:5;background:#ffffffd1;border-bottom:1px solid #e9e9ed;align-items:center;gap:42px;height:68px;padding:0 max(28px,50vw - 620px);display:flex;position:sticky;top:0}.brand{cursor:pointer;white-space:nowrap;align-items:center;gap:9px;font-size:16px;font-weight:700;display:flex}.brand>span,.mark{color:#fff;background:#087cff;border-radius:8px;place-items:center;width:31px;height:31px;display:grid}.mark{width:48px;height:48px}.mark.small{flex:none;width:34px;height:34px}.topbar nav{gap:4px;height:100%;display:flex}.topbar nav button{color:#6e6e73;background:0 0;border-bottom:2px solid #0000;padding:0 14px}.profile{align-items:center;gap:9px;margin-left:auto;display:flex}.profile>span{color:#087cff;background:#dceeff;border-radius:50%;place-items:center;width:31px;height:31px;font-weight:700;display:grid}.profile b,.profile small{font-size:12px;display:block}.profile small{color:#86868b;margin-top:2px}.icon{color:#86868b;background:0 0;margin-left:8px;padding:6px}.page{max-width:1240px;margin:auto;padding:66px 28px 82px}.hero{color:#fff;background:#050505;min-height:430px;margin:0 -28px 54px;padding:82px max(28px,50vw - 620px);position:relative;overflow:hidden}.hero h1,.teacher-hero h1,.page-heading h1,.login-copy h1{letter-spacing:0;margin:10px 0 16px;font-size:clamp(40px,5vw,72px);line-height:1.05}.hero em,.teacher-hero em{color:#72b6ff;font-style:normal}.hero>p:not(.eyebrow){color:#a1a1a6;max-width:420px;margin-bottom:28px;font-size:18px;line-height:1.55}.eyebrow{letter-spacing:0;color:#087cff;text-transform:uppercase;margin:0;font-size:11px;font-weight:700}.primary{color:#fff;background:#087cff;border-radius:7px;justify-content:center;align-items:center;gap:7px;padding:11px 15px;font-weight:650;transition:transform .2s,background .2s;display:inline-flex}.primary:hover{background:#006ddb;transform:translateY(-1px)}.secondary{color:#343438;background:#f0f1f4;border-radius:7px;padding:9px 12px;font-size:13px;font-weight:600}.hero-rings{width:290px;height:290px;position:absolute;top:50%;right:8%;transform:translateY(-50%)}.hero-rings i{border:1px solid #ffffff42;border-radius:50%;position:absolute;inset:0}.hero-rings i:nth-child(2){inset:34px}.hero-rings i:nth-child(3){background:#087cff;border:0;inset:68px;box-shadow:0 0 85px #087cff}.metric-grid{grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:56px;display:grid}.metric{background:#fff;border:1px solid #e6e6ea;border-radius:8px;min-height:144px;padding:24px}.metric>span{color:#515158;background:#f0f1f4;border-radius:7px;place-items:center;width:34px;height:34px;display:grid}.metric p{color:#86868b;margin:18px 0 3px;font-size:13px}.metric strong{letter-spacing:0;font-size:28px}.two-col{grid-template-columns:1fr 1fr;gap:64px;display:grid}.section-title,.manage-head{justify-content:space-between;align-items:end;margin-bottom:16px;display:flex}.section-title h2,.manage-head h2{margin:5px 0 0;font-size:22px}.section-title>span,.manage-head p{color:#86868b;margin:0;font-size:13px}.activity{border-top:1px solid #dcdce0}.log,.order{border-bottom:1px solid #e7e7ea;align-items:center;gap:12px;padding:16px 2px;display:flex}.log>span:first-child{width:44px;font-size:14px;font-weight:700}.log b,.log small{font-size:14px;display:block}.log small,.order small{color:#86868b;margin-top:4px;font-size:12px}.log div{flex:1}.item-icon{color:#087cff;background:#e8f2ff;border-radius:7px;flex:none;place-items:center;width:32px;height:32px;display:grid}.pill{border-radius:99px;margin-left:auto;padding:5px 8px;font-size:11px;font-weight:650}.text-button{color:#087cff;background:0 0;font-size:13px}.page-heading{margin-bottom:42px}.page-heading h1{margin:7px 0 12px;font-size:clamp(35px,4vw,55px)}.page-heading p:not(.eyebrow){color:#6e6e73;margin:0;font-size:17px}.legend{color:#6e6e73;gap:18px;margin-top:22px;font-size:12px;display:flex}.legend span{align-items:center;gap:6px;display:flex}.legend i{border-radius:50%;width:8px;height:8px}.available{background:#d9d9dd}.bidding{background:#087cff}.owned{background:#1d1d1f}.classroom{background:#fff;border:1px solid #e4e4e8;border-radius:8px;padding:24px;overflow:auto}.board{color:#a9a9ad;letter-spacing:0;background:#252525;border-radius:3px;place-items:center;width:44%;min-width:230px;height:35px;margin:0 auto 32px;font-size:10px;display:grid}.seat-groups{grid-template-columns:repeat(4,1fr);gap:26px;min-width:790px;display:grid}.seat-group>small{text-align:center;color:#86868b;margin-bottom:9px;font-size:11px;display:block}.seat-group>div{grid-template-columns:repeat(2,1fr);gap:7px;display:grid}.seat{color:#1d1d1f;text-align:left;background:#f3f4f6;border-radius:6px;height:54px;padding:8px;transition:transform .2s,background .2s}.seat b,.seat span{display:block}.seat b{font-size:11px}.seat span{color:#86868b;white-space:nowrap;text-overflow:ellipsis;margin-top:4px;font-size:10px;overflow:hidden}.seat.bidding{color:#006dd9;background:#e3f0ff}.seat.bidding:hover{background:#cce5ff;transform:translateY(-2px)}.seat.disabled{opacity:.35}.auction-strip{margin-top:44px}.auction-list{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.auction-card{text-align:left;background:#fff;border:1px solid #e5e5e9;border-radius:8px;align-items:center;gap:10px;padding:14px;display:flex}.auction-card:hover{border-color:#087cff}.seat-avatar{color:#087cff;background:#eef5ff;border-radius:7px;place-items:center;width:36px;height:36px;font-size:11px;font-weight:700;display:grid}.auction-card div{flex:1}.auction-card b,.auction-card small{display:block}.auction-card b{font-size:13px}.auction-card small{color:#86868b;margin-top:3px;font-size:11px}.auction-card>strong{font-size:17px}.auction-card>strong small{font-weight:400}.overlay{z-index:10;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#00000061;place-items:end center;padding:20px;display:grid;position:fixed;inset:0}.sheet{background:#fff;border-radius:8px;width:min(500px,100%);padding:30px;animation:.28s up;position:relative;box-shadow:0 15px 60px #0000002e}.sheet h2{margin:8px 0;font-size:28px}.close{color:#555;background:#f0f0f2;border-radius:50%;place-items:center;width:30px;height:30px;display:grid;position:absolute;top:15px;right:15px}.close svg{width:17px}.muted{color:#6e6e73}.bid-input{border:1px solid #d6d6da;border-radius:8px;align-items:center;height:60px;margin:25px 0 9px;display:flex}.bid-input button{color:#087cff;background:#f6f6f7;width:55px;height:100%;font-size:24px}.bid-input input{text-align:center;border:0;outline:0;width:100%;font-size:24px;font-weight:700}.bid-input span{color:#86868b;padding-right:18px}.wide{width:100%;margin-top:18px}.hint{color:#86868b;font-size:12px}.error{color:#d63030;font-size:13px}.rewards{grid-template-columns:repeat(3,1fr);gap:14px;display:grid}.reward{background:#fff;border:1px solid #e4e4e8;border-radius:8px;flex-direction:column;min-height:280px;padding:22px;display:flex}.reward-art{border-radius:7px;place-items:center;height:88px;margin-bottom:18px;display:grid}.reward-art svg{width:34px;height:34px}.art-0{color:#087cff;background:#e5f1ff}.art-1{color:#7732cc;background:#f5edff}.art-2{color:#00864b;background:#e5f8ef}.art-3{color:#d66500;background:#fff0de}.reward h2{margin:0;font-size:20px}.reward p{color:#6e6e73;font-size:13px;line-height:1.5}.reward footer{justify-content:space-between;align-items:center;margin-top:auto;display:flex}.reward footer strong{font-size:22px}.reward footer small{font-size:12px;font-weight:400}.orders{max-width:680px;margin-top:58px}.order b{font-size:14px}.order small{flex:1}.teacher-hero{background:#f0f7ff;border-radius:8px;justify-content:space-between;align-items:center;min-height:370px;margin-bottom:45px;padding:58px;display:flex;overflow:hidden}.teacher-hero h1{font-size:50px}.orbital{background:#ffffff8c;border:1px solid #bbd9ff;border-radius:50%;flex-direction:column;justify-content:center;align-items:center;width:190px;height:190px;display:flex;position:relative}.orbital:before,.orbital:after{content:"";border:1px solid #d3e6ff;border-radius:50%;position:absolute}.orbital:before{inset:-23px}.orbital:after{inset:-48px}.orbital span{color:#087cff;font-size:46px;font-weight:700}.orbital small{color:#6e6e73}.manage-head{margin-bottom:24px}.tabs{border-bottom:1px solid #dedee2;gap:6px;margin-bottom:30px;display:flex}.tabs button{color:#6e6e73;background:0 0;border-bottom:2px solid #0000;padding:12px 15px}.data-list,.reward-manage{background:#fff;border:1px solid #e4e4e8;border-radius:8px;overflow:hidden}.data-list article,.reward-manage article{border-bottom:1px solid #ededf0;align-items:center;gap:12px;padding:14px 16px;display:flex}.data-list article:last-child,.reward-manage article:last-child{border:0}.data-list article>span{color:#087cff;background:#e7f1ff;border-radius:50%;place-items:center;width:32px;height:32px;font-size:13px;font-weight:700;display:grid}.data-list article div{flex:1}.data-list b,.data-list small,.reward-manage b,.reward-manage small{display:block}.data-list b,.reward-manage b{font-size:14px}.data-list small,.reward-manage small{color:#86868b;margin-top:3px;font-size:12px}.data-list strong{margin-right:10px;font-size:14px}.reward-manage{margin-bottom:42px}.reward-manage article div{flex:1}.small-button{padding:8px 11px;font-size:13px}.seat-admin{grid-template-columns:repeat(4,1fr);gap:8px;display:grid}.seat-admin article{background:#fff;border:1px solid #e5e5e9;border-radius:7px;padding:11px}.seat-admin small,.seat-admin b{display:block}.seat-admin small{color:#86868b;font-size:10px}.seat-admin b{white-space:nowrap;text-overflow:ellipsis;margin:4px 0 10px;font-size:12px;overflow:hidden}.seat-admin button{width:100%;padding:7px;font-size:11px}.form{place-self:center}.form label{margin:14px 0;font-size:12px;font-weight:650;display:block}.form input{border:1px solid #dedee2;border-radius:6px;outline-color:#087cff;width:100%;margin-top:6px;padding:10px;display:block}.toast{z-index:20;color:#fff;background:#1d1d1f;border-radius:7px;align-items:center;gap:8px;padding:11px 15px;font-size:13px;display:flex;position:fixed;bottom:24px;left:50%;transform:translate(-50%);box-shadow:0 7px 26px #0003}.empty{color:#86868b;padding:22px 0;font-size:13px}.loading{color:#6e6e73;text-align:center;place-content:center;gap:12px;height:100vh;display:grid}.loading i{border:2px solid #dce8f8;border-top-color:#087cff;border-radius:50%;width:22px;height:22px;margin:auto;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@keyframes up{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}@media (width<=700px){.topbar{gap:14px;padding:0 16px}.topbar nav{gap:0;overflow:auto}.topbar nav button{padding:0 9px;font-size:13px}.profile div{display:none}.profile{gap:3px}.page{padding:42px 16px 64px}.hero{min-height:410px;margin:0 -16px 40px;padding:62px 22px}.hero h1,.page-heading h1{font-size:40px}.hero-rings{opacity:.55;top:68%;right:-72px}.metric-grid{grid-template-columns:1fr;gap:8px;margin-bottom:42px}.metric{min-height:108px;padding:18px}.metric p{margin:10px 0 2px}.two-col{grid-template-columns:1fr;gap:42px}.page-heading{margin-bottom:28px}.page-heading p:not(.eyebrow){font-size:15px}.classroom{padding:15px}.seat-groups{gap:18px;min-width:620px}.seat{height:48px}.auction-list,.rewards{grid-template-columns:1fr}.teacher-hero{min-height:380px;padding:34px 24px;position:relative}.teacher-hero h1{font-size:40px}.orbital{width:120px;height:120px;position:absolute;bottom:8px;right:-19px}.orbital span{font-size:33px}.manage-head{align-items:start}.seat-admin{grid-template-columns:repeat(2,1fr)}.data-list article{flex-wrap:wrap}.data-list article div{min-width:calc(100% - 48px)}.data-list article strong{margin-left:auto}.legend{flex-wrap:wrap}.login{grid-template-columns:1fr!important}.login-copy{display:none}.login-card{border-left:0!important}.login{min-height:100vh!important}}.login{background:#fff;grid-template-columns:1.15fr .85fr;min-height:100vh;display:grid}.login-copy{color:#fff;background:#050505;padding:clamp(45px,10vw,140px);position:relative;overflow:hidden}.login-copy:after{content:"";filter:blur(90px);opacity:.28;background:#087cff;border-radius:50%;width:400px;height:400px;position:absolute;bottom:-170px;right:-130px}.login-copy h1{z-index:1;margin-top:38px;position:relative}.login-copy>p:not(.eyebrow){color:#a1a1a6;z-index:1;max-width:380px;font-size:17px;line-height:1.6;position:relative}.login-card{border-left:1px solid #eee;align-self:center;padding:clamp(35px,8vw,110px)}.card-head{align-items:center;gap:12px;margin-bottom:30px;display:flex}.card-head h2{margin:0;font-size:24px}.card-head p{color:#86868b;margin:4px 0;font-size:13px}.login-card label{margin:16px 0;font-size:12px;font-weight:650;display:block}.login-card input{border:1px solid #dedee2;border-radius:7px;outline-color:#087cff;width:100%;margin-top:7px;padding:12px;display:block}.login-card .wide{margin-top:11px}.shell{background:linear-gradient(118deg,#eff2f6 0%,#e5eaf0 48%,#f4f6f8 100%)}.topbar{background:#f9fafcb8;border-bottom:1px solid #ffffffeb;box-shadow:0 1px #171d260f,0 10px 34px #3141530f}.brand{letter-spacing:0;color:#101217}.brand>span,.mark{background:#0a6ee8;box-shadow:0 5px 14px #0a6ee838}.hero{color:#101217;-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);background:#f9fbfd91;border:1px solid #ffffffe6;border-radius:8px;min-height:414px;margin-top:28px;padding-top:74px;padding-bottom:74px;box-shadow:inset 0 1px #fffffff2,0 24px 60px #3141531f}.hero:before{content:"";pointer-events:none;background:linear-gradient(118deg,#ffffffa8,#ffffff1f);border-radius:8px;position:absolute;inset:0}.hero>*{z-index:1;position:relative}.hero h1{letter-spacing:0;font-weight:720}.hero>p:not(.eyebrow){color:#5f6975}.hero-rings,.orbital{display:none}.eyebrow{color:#0a6ee8;letter-spacing:.08em}.primary{background:#0a6ee8f5;border:1px solid #ffffff5c;box-shadow:inset 0 1px #ffffff47,0 8px 20px #0a6ee82e}.primary:hover{background:#0066d6;box-shadow:inset 0 1px #ffffff59,0 12px 24px #0a6ee83d}.metric{min-height:142px}.metric>span{color:#1b2734;background:#eaeff5d1}.metric.accent>span{color:#0a6ee8;background:#0a6ee81f}.metric.accent p{color:#697380}.metric p{color:#74808c}.section-title h2,.manage-head h2{color:#151b23;font-weight:680}.item-icon{color:#0a6ee8;background:#dcedffbf}.page-heading p:not(.eyebrow){color:#66717d}.classroom{padding:26px}.seat{background:#ecf0f4d9;border:1px solid #ffffffbd}.seat.owned{background:#303942;box-shadow:inset 0 1px #ffffff26}.seat-avatar{color:#096cd9;background:#dcedffd6}.sheet{-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);background:#fafcfee0;border:1px solid #fffffff2;box-shadow:inset 0 1px #fff,0 24px 70px #141f2b38}.close{background:#e7ecf2cc}.bid-input button{background:#ebf1f7bf}.reward{min-height:292px}.reward-art{border:1px solid #ffffffd1;color:#0a6ee8!important;background:#e3eef9bd!important}.orders{max-width:760px}.teacher-hero{-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);background:#f9fbfd9e;border:1px solid #ffffffeb;min-height:350px;box-shadow:inset 0 1px #fff,0 24px 60px #3141531a}.teacher-hero h1{color:#111820}.teacher-hero>div>p:not(.eyebrow){color:#66717d}.secondary{color:#2e3944;background:#e7ecf2d1;border:1px solid #ffffffd1}.form input,.login-card input{background:#ffffffba;border-color:#5b6b7d38}.login-copy:after{display:none}.login-copy:before{content:"";pointer-events:none;background:linear-gradient(136deg,#ffffff12,#0000 42%);position:absolute;inset:0}.login-copy h1,.login-copy>p,.login-copy .mark{z-index:1;position:relative}.login-card{-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);background:#f9fbfdb3;border-left-color:#ffffffe6}@media (width<=700px){.hero{border-radius:7px;margin-top:14px}.teacher-hero{border-radius:7px}.metric{min-height:108px}.topbar{padding:0 14px}.brand{font-size:15px}.topbar nav button{padding:0 8px}.profile>span{width:29px;height:29px}}.auth-switch{color:#0a6ee8;background:0 0;margin:16px auto 0;padding:4px;font-size:13px;font-weight:650;display:block}.success{color:#087439;background:#d7f7e5b8;border-radius:6px;padding:9px 10px;font-size:13px}.batch-actions{gap:8px;display:flex}.registrations input[type=checkbox]{accent-color:#0a6ee8;flex:none;width:16px;height:16px}.registrations article{min-height:65px}@media (width<=700px){.batch-actions{width:100%;margin-top:14px}.batch-actions button{flex:1}.manage-head:has(.batch-actions){display:block}.registrations article{align-items:center}.registrations article>div{min-width:calc(100% - 70px)}.registrations article button{flex:1}}:root{color:#151516;background:#f1f2f4}.shell{background:linear-gradient(135deg,#f7f7f8 0%,#eceef1 48%,#f8f8f9 100%);min-height:100vh}.topbar{background:#ffffffb3;border-bottom-color:#1a1b1d14;box-shadow:0 1px #fffffff0,0 14px 42px #12161c12}.brand{color:#151516}.brand>span,.mark{color:#fff;background:#171719;box-shadow:0 5px 16px #00000024}.topbar nav button{color:#77777c}.topbar nav button.active{color:#141416;border-color:#171719}.profile>span{color:#171719;background:#18181a14}.profile b{color:#1a1a1c}.profile small{color:#85858b}.icon{color:#65656b}.hero,.teacher-hero{color:#171719;-webkit-backdrop-filter:blur(28px);backdrop-filter:blur(28px);background:#ffffff94;border-color:#ffffffeb;box-shadow:inset 0 1px #fffffff5,0 28px 70px #262e381c}.hero:before{background:linear-gradient(120deg,#ffffffdb,#ffffff24)}.hero em,.teacher-hero em{color:#525257}.hero>p:not(.eyebrow),.teacher-hero>div>p:not(.eyebrow){color:#6e6e74}.hero h1,.teacher-hero h1{color:#151516}.eyebrow{color:#76767c}.primary{color:#fff;background:#1a1a1c;border-color:#1a1a1c;box-shadow:inset 0 1px #fff3,0 8px 22px #0000002e}.primary:hover{color:#fff;background:#050506;box-shadow:inset 0 1px #ffffff40,0 14px 28px #0000003d}.metric,.classroom,.reward,.data-list,.reward-manage,.auction-card{-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);background:#fff9;border-color:#ffffffe6;box-shadow:inset 0 1px #fffffff0,0 15px 36px #30384312}.metric{color:#171719}.metric.accent{color:#151516;background:#ffffffc7;border-color:#fff}.metric p,.metric.accent p{color:#7c7c82}.metric>span,.metric.accent>span{color:#242427;background:#17171912}.section-title h2,.manage-head h2{color:#19191b}.section-title>span,.manage-head p,.page-heading p:not(.eyebrow){color:#7a7a80}.activity{border-color:#2020231c}.log,.order{border-color:#20202317}.log b,.order b,.data-list b,.reward-manage b{color:#202023}.log small,.order small,.data-list small,.reward-manage small{color:#88888e}.item-icon,.seat-avatar{color:#242426;background:#18181a12}.positive{color:#267545}.negative{color:#b34744}.pill.pending{color:#505055;background:#18181a14}.pill.approved{color:#287445;background:#2675451a}.pill.rejected{color:#a33d3b;background:#b347441a}.text-button,.auth-switch{color:#202023}.legend{color:#77777d}.legend .available{background:#b8b8bd}.legend .bidding{background:#242426}.legend .owned{background:#55555b}.board{color:#c7c7cb;background:#202022;box-shadow:inset 0 1px #ffffff1f,0 10px 28px #00000029}.seat{color:#29292c;background:#ebedf0d1;border-color:#ffffffd1}.seat span{color:#888890}.seat.bidding{color:#18181a;background:#1f1f211c;border-color:#1f1f212e}.seat.bidding span{color:#56565b}.seat.bidding:hover{background:#1f1f212b}.seat.owned{color:#fff;background:#2a2a2c}.seat.owned span{color:#d0d0d3}.auction-card:hover{border-color:#16161842;box-shadow:inset 0 1px #fff,0 20px 40px #0000001a}.auction-card b,.auction-card>strong{color:#202023}.auction-card small{color:#88888e}.overlay{background:#1c1f2347}.sheet{color:#202023;background:#fcfcfddb;border-color:#fffffffa;box-shadow:inset 0 1px #fff,0 30px 80px #14181e38}.close{color:#38383c;background:#1b1b1d14}.muted,.hint{color:#818187}.bid-input{background:#ffffff9e;border-color:#23232624}.bid-input button{color:#1c1c1f;background:#1e1e210f}.bid-input input{color:#171719;background:0 0}.bid-input span{color:#808087}.reward h2,.reward footer strong{color:#1c1c1f}.reward p{color:#7a7a80}.reward-art{border-color:#ffffffd9;color:#252528!important;background:#1f1f2112!important}.tabs{border-color:#2020231f}.tabs button{color:#797980}.tabs button.active{color:#171719;border-color:#171719}.secondary{color:#27272a;background:#1e1e2012;border-color:#ffffffd6}.seat-admin article{background:#ffffff94;border-color:#ffffffdb;box-shadow:inset 0 1px #ffffffeb,0 12px 26px #323a450f}.seat-admin article.has-owner{background:#25252812}.seat-admin small{color:#85858c}.seat-admin b{color:#28282b}.form input,.login-card input{color:#202023;background:#ffffffb8;border-color:#20202324}.login{background:#f0f1f3}.login-copy{background:#19191b}.login-copy:before{background:linear-gradient(135deg,#ffffff1c,#0000 43%)}.login-copy>p:not(.eyebrow){color:#aaabb0}.login-card{color:#202023;background:#ffffffb8;border-left-color:#ffffffe6}.card-head h2{color:#202023}.card-head p{color:#85858b}.success{color:#287445;background:#2675451a}.toast{color:#fff;background:#1c1c1e}.media-page{max-width:1240px}.media-submit{-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);background:#ffffff94;border:1px solid #ffffffe6;border-radius:8px;grid-template-columns:minmax(240px,.8fr) minmax(340px,1.2fr);gap:44px;margin:0 0 44px;padding:30px;display:grid;box-shadow:inset 0 1px #fff,0 16px 38px #30384314}.media-submit h2{margin:7px 0;font-size:25px}.media-submit>div>p:not(.eyebrow){color:#77777e;margin:0;line-height:1.55}.media-submit form{grid-template-columns:1fr 120px;gap:12px;display:grid}.media-type{grid-column:1/-1;gap:8px;display:flex}.media-type button{color:#67676d;background:#1d1d1f0f;border-radius:6px;align-items:center;gap:7px;padding:9px 12px;display:inline-flex}.media-type button.active{color:#fff;background:#1b1b1d}.media-submit label{color:#45454a;font-size:12px;font-weight:650}.media-submit label:nth-of-type(3){grid-column:1/-1}.media-submit input{color:#202023;background:#ffffffb8;border:1px solid #20202324;border-radius:6px;width:100%;margin-top:6px;padding:10px;display:block}.media-submit input[type=file]{padding:8px;font-size:12px}.media-submit small{color:#86868c;grid-column:1/-1;font-size:11px}.media-submit .primary{justify-self:start}.media-tabs{gap:7px;margin-bottom:20px;display:flex}.media-tabs button{color:#717178;background:#2020230f;border-radius:6px;padding:8px 13px;font-size:13px}.media-tabs button.active{color:#fff;background:#1b1b1d}.media-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.media-card{background:#ffffff9e;border:1px solid #ffffffe6;border-radius:8px;overflow:hidden;box-shadow:inset 0 1px #fff,0 14px 34px #30384314}.media-preview{background:#2323260f;place-items:center;height:190px;display:grid;overflow:hidden}.media-preview img{object-fit:cover;width:100%;height:100%}.media-preview.music{background:linear-gradient(145deg,#e7e8ea,#f8f8f9);padding:24px}.media-preview audio{width:100%;max-width:280px}.media-preview span{color:#86868d;font-size:12px}.media-meta{padding:15px 16px 5px}.media-kind{color:#73737a;align-items:center;gap:5px;font-size:11px;display:inline-flex}.media-meta h3{color:#202023;margin:8px 0 4px;font-size:16px}.media-meta p{color:#88888f;margin:0;font-size:12px}.media-card footer{justify-content:flex-end;padding:12px 16px 16px;display:flex}.media-card footer button{align-items:center;gap:6px;display:inline-flex}.my-media{max-width:780px;margin-top:52px}.review-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.review-actions{gap:8px;width:100%;display:flex}.review-actions button{flex:1;padding:9px 8px;font-size:12px}@media (width<=700px){.media-submit{grid-template-columns:1fr;gap:22px;padding:22px}.media-submit form{grid-template-columns:1fr}.media-submit label:nth-of-type(3){grid-column:auto}.media-grid,.review-grid{grid-template-columns:1fr}.media-preview{height:210px}.media-submit .primary{width:100%}}.media-card footer{align-items:center;gap:8px}.review-actions{flex:1;width:auto;min-width:0}.app-dialog{width:min(440px,100vw - 32px);max-height:calc(100vh - 32px);overflow:auto}:root{--fx-ink:#171719;--fx-soft-shadow:0 18px 46px #181c2217;--fx-ease:cubic-bezier(.22, .8, .24, 1)}body{background-image:radial-gradient(#191b1f0b .65px,#0000 .65px);background-size:5px 5px}.auction-strip{display:none!important}.bulk-settle-row{justify-content:flex-end;margin:-10px 0 14px;display:flex}.cinema-grid .seat.available span:after{content:" · 可竞拍"}.cinema-grid .seat.bidding span:after{content:" · 竞拍中"}.cinema-grid .seat.owned span:after{content:" · 已拥有"}.cinema-grid .seat.disabled span:after{content:" · 未开放"}.shell:before{content:"";pointer-events:none;z-index:0;animation:ambient-sheen 18s var(--fx-ease) infinite;background:linear-gradient(115deg,#0000 0 42%,#ffffff38 50%,#0000 58%) 0 0/220% 100%;position:fixed;inset:0}.shell>*{z-index:1;position:relative}.topbar{transition:box-shadow .35s var(--fx-ease), background .35s var(--fx-ease)}.topbar:hover{box-shadow:0 16px 44px #12161c1c}.brand>span,.mark{transition:transform .35s var(--fx-ease), box-shadow .35s var(--fx-ease);background:url(/assets/chuzhou-high-school-emblem.png) 50%/contain no-repeat}.brand>span svg,.mark svg{display:none}.brand>span,.mark{overflow:visible}.brand:hover>span{transform:rotate(-7deg)scale(1.08);box-shadow:0 8px 22px #0003}.page,.hero,.teacher-hero{isolation:isolate;animation:surface-in .75s var(--fx-ease) both}.page>*{animation:surface-in .65s var(--fx-ease) both}.hero-page{padding-top:34px}.hero-page .teacher-hero{min-height:330px;margin-bottom:28px;padding:48px 56px}.hero-page .metric-grid{margin-bottom:28px}.hero:after,.teacher-hero:after{content:"";pointer-events:none;z-index:0;opacity:.55;background:linear-gradient(105deg,#0000 35%,#ffffff6b 49%,#0000 63%) 0 0/230% 100%;animation:9s ease-in-out infinite panel-glint;position:absolute;inset:0}.hero h1,.teacher-hero h1{animation:title-in .8s 80ms var(--fx-ease) both}.hero>p:not(.eyebrow),.teacher-hero>div>p:not(.eyebrow){animation:title-in .7s .18s var(--fx-ease) both}.hero .primary,.teacher-hero .primary{animation:title-in .7s .28s var(--fx-ease) both}.metric,.reward,.auction-card,.media-card,.data-list,.reward-manage,.classroom{transition:transform .38s var(--fx-ease), box-shadow .38s var(--fx-ease), border-color .38s ease}.metric:hover,.reward:hover,.auction-card:hover,.media-card:hover{box-shadow:var(--fx-soft-shadow), inset 0 1px 0 #fffffff5;transform:translateY(-4px)}.metric-grid>*,.rewards>*,.auction-list>*,.media-grid>*{animation:item-in .55s var(--fx-ease) both}.metric-grid>:nth-child(2),.rewards>:nth-child(2),.auction-list>:nth-child(2),.media-grid>:nth-child(2){animation-delay:60ms}.metric-grid>:nth-child(3),.rewards>:nth-child(3),.auction-list>:nth-child(3),.media-grid>:nth-child(3){animation-delay:.12s}.metric strong{font-variant-numeric:tabular-nums;transition:letter-spacing .35s,text-shadow .35s}.metric:hover strong{letter-spacing:.03em;text-shadow:0 0 24px #1717192e}.reward-art{transition:transform .45s var(--fx-ease), filter .45s ease}.reward:hover .reward-art{filter:contrast(1.05);transform:scale(1.035)}.primary,.secondary,.text-button,.tabs button,.media-tabs button{transition:transform .25s var(--fx-ease), box-shadow .25s ease, background .25s ease, color .25s ease}.primary:active,.secondary:active,.tabs button:active,.media-tabs button:active{transform:scale(.97)}.primary:focus-visible,.secondary:focus-visible,.icon:focus-visible,.close:focus-visible{outline-offset:3px;outline:2px solid #171719}.seat{transition:transform .28s var(--fx-ease), box-shadow .28s ease, background .28s ease}.seat:not(:disabled):hover{transform:translateY(-4px)scale(1.025);box-shadow:0 10px 20px #18181a24}.auction-card>strong{transition:transform .3s var(--fx-ease)}.auction-card:hover>strong{transform:translate(-3px)}.seat-settings{background:#ffffff85;border:1px solid #ffffffe0;border-radius:8px;grid-template-columns:minmax(190px,1.4fr) repeat(4,minmax(110px,1fr)) auto;align-items:end;gap:12px;margin:0 0 24px;padding:16px;display:grid;box-shadow:inset 0 1px #fff,0 12px 28px #3038430f}.seat-settings>div{align-self:center}.seat-settings b,.seat-settings small{display:block}.seat-settings b{font-size:14px}.seat-settings small{color:#85858c;margin-top:5px;font-size:11px}.seat-settings label{color:#5f6066;font-size:11px;font-weight:650}.seat-settings input,.seat-settings select{color:#202023;background:#ffffffb8;border:1px solid #20202324;border-radius:6px;width:100%;margin-top:6px;padding:9px 10px;display:block}.seat-settings .primary{white-space:nowrap}.seat-map-admin{grid-auto-flow:row;width:max-content;min-width:100%;padding-top:58px;position:relative}.seat-map-admin:before{content:"BLACKBOARD";color:#c7c7cb;letter-spacing:.08em;background:#202022;border-radius:4px;place-items:center;width:min(48%,360px);height:34px;font-size:10px;display:grid;position:absolute;top:0;left:50%;transform:translate(-50%);box-shadow:inset 0 1px #ffffff1f,0 10px 24px #00000029}.about-page{max-width:1040px}.about-grid{grid-template-columns:1.05fr .95fr;gap:14px;display:grid}.about-panel{-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px);background:#fff9;border:1px solid #ffffffe6;border-radius:8px;padding:28px;box-shadow:inset 0 1px #fff,0 16px 38px #30384312}.about-panel h2{color:#202023;margin:10px 0 12px;font-size:24px}.about-panel p{color:#73747b;margin:0 0 10px;line-height:1.7}.about-story{min-height:245px}.about-story .mark{margin-bottom:12px}.about-rule{background:#202022;border-radius:2px;width:74px;height:3px;margin-top:26px}.about-special{font-weight:700;color:#202023!important}.about-tech-copy{font-size:12px}.about-open{justify-content:space-between;align-items:center;gap:24px;margin-top:14px;display:flex}.about-open .primary{white-space:nowrap;flex:none}.topbar nav button{align-items:center;gap:6px;display:inline-flex}.site-footer{text-align:center;max-width:1240px;margin:0 auto;padding:0 28px 28px}.site-footer button{color:#88888e;background:0 0;align-items:center;gap:5px;padding:7px 10px;font-size:12px;display:inline-flex}.site-footer button:hover{color:#202023}@media (width<=700px){.about-grid{grid-template-columns:1fr}.about-open{flex-direction:column;align-items:flex-start}.about-open .primary{width:100%}}.seat-map-admin article{min-width:120px}.seat-map-admin article small{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.cinema-grid{grid-auto-flow:row;align-items:stretch;gap:9px 10px;width:max-content;min-width:100%;padding:0 12px 14px;display:grid}.cinema-grid .seat{width:100%;min-width:0}.cinema-grid .seat b,.cinema-grid .seat span{white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.group-divider{z-index:2;pointer-events:none;background:#20202338;border-radius:3px;place-self:stretch start;width:3px;height:100%;box-shadow:0 0 0 1px #ffffff7a}.seat-map-admin .group-divider{background:#20202338;width:3px}.screen-shell{color:#202023;background:linear-gradient(135deg,#eef2f6,#fbfcfd 48%,#e8edf2);min-height:100vh;padding:26px 34px 22px}.screen-topbar{grid-template-columns:minmax(220px,1fr) minmax(420px,1.8fr) minmax(150px,1fr);align-items:center;gap:28px;max-width:1680px;margin:0 auto 24px;padding:10px 0 18px;display:grid}.screen-brand{align-items:center;gap:14px;min-width:240px;display:flex}.screen-brand>img{object-fit:contain;filter:drop-shadow(0 8px 14px #2d394824);width:68px;height:68px}.screen-brand b,.screen-brand small{display:block}.screen-brand b{font-size:25px}.screen-brand small{color:#85858b;letter-spacing:.14em;margin-top:4px;font-size:11px}.screen-quote{text-align:center;white-space:nowrap;letter-spacing:.02em;justify-self:center;max-width:none;font-size:clamp(30px,3.1vw,52px);font-weight:750;line-height:1.28;transform:translateY(clamp(88px,14vh,156px))}.screen-logout{color:#505057;background:#ffffffa6;border-radius:8px;align-items:center;gap:7px;min-height:44px;padding:0 15px;display:inline-flex}.screen-grid{grid-template-columns:minmax(280px,1fr) minmax(360px,1.2fr) minmax(480px,1.8fr);align-items:start;gap:18px;max-width:1680px;margin:0 auto;display:grid}.screen-panel{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#ffffffa1;border:1px solid #ffffffe6;border-radius:10px;min-width:0;padding:22px;box-shadow:inset 0 1px #fff,0 18px 44px #2d39481a}.screen-panel-head{justify-content:space-between;align-items:flex-end;margin-bottom:16px;display:flex}.screen-panel-head h2{margin:5px 0 0;font-size:24px}.screen-panel-head>span{color:#85858b;font-size:13px}.screen-wallpaper-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;max-height:calc(100vh - 180px);display:grid;overflow:auto}.screen-wallpaper-card{background:#ffffffa6;border:1px solid #fffffff2;border-radius:8px;min-width:0;overflow:hidden}.screen-wallpaper-card>div{aspect-ratio:4/3;background:#e9edf1;place-items:center;display:grid;overflow:hidden}.screen-wallpaper-card img{object-fit:cover;width:100%;height:100%}.screen-wallpaper-card footer{justify-content:space-between;align-items:center;gap:8px;padding:9px;display:flex}.screen-wallpaper-card b{text-overflow:ellipsis;white-space:nowrap;min-width:0;font-size:12px;overflow:hidden}.screen-wallpaper-card button{flex:none;align-items:center;gap:4px;padding:7px 9px;display:inline-flex}.screen-empty-player{color:#85858b;border:1px dashed #2020232e;border-radius:8px;place-items:center;min-height:145px;display:grid}.screen-player{background:#f5f7f9d6;border-radius:8px;padding:18px}.screen-player-meta{justify-content:space-between;align-items:flex-start;gap:14px;display:flex}.screen-player b,.screen-player small{display:block}.screen-player small{color:#85858b;margin:5px 0 14px}.screen-player audio{width:100%}.screen-play-mode{background:#e1e5e9b8;border-radius:7px;flex:none;gap:4px;padding:3px;display:flex}.screen-play-mode button{color:#77777e;background:0 0;border:0;border-radius:5px;min-height:32px;padding:0 10px;font-size:12px}.screen-play-mode button.active{color:#202023;background:#fff;box-shadow:0 1px 4px #1e23281f}.screen-music-list{gap:8px;max-height:calc(100vh - 440px);margin-top:14px;display:grid;overflow:auto}.screen-music-list button{text-align:left;color:#303035;background:#f5f6f8b8;border:1px solid #0000;border-radius:7px;align-items:center;gap:10px;min-height:52px;padding:9px 11px;display:flex}.screen-music-list button.active{background:#fff;border-color:#1d1d1f}.screen-music-list button>span{flex:1;min-width:0}.screen-music-list button span,.screen-music-list button small{display:block}.screen-music-list button small{color:#85858b;text-overflow:ellipsis;white-space:nowrap;margin-top:3px;overflow:hidden}.screen-music-list button>svg:last-child{flex:none}.screen-seat-hint{color:#77777e;margin:0 0 14px;font-size:13px}.screen-seat-map{gap:7px 9px;width:100%;max-height:calc(100vh - 330px);padding:5px 5px 10px;display:grid;overflow:auto}.screen-seat{color:#252529;text-align:left;background:#f1f3f5;border:1px solid #ffffffe6;border-radius:7px;min-width:0;padding:7px}.screen-seat b,.screen-seat small{text-overflow:ellipsis;white-space:nowrap;display:block;overflow:hidden}.screen-seat b{font-size:12px}.screen-seat small{color:#85858b;margin-top:4px;font-size:11px}.screen-seat:not(:disabled):hover,.screen-seat.selected{background:#fff;border-color:#1d1d1f}.screen-seat.owned{color:#fff;background:#252527}.screen-seat.owned small{color:#d4d4d8}.screen-seat:disabled{cursor:default}.screen-assignment-form{border-top:1px solid #2020231a;grid-template-columns:1.2fr .8fr auto;align-items:center;gap:8px;margin-top:13px;padding-top:13px;display:grid}.screen-assignment-form b{grid-column:1/-1}.screen-assignment-form select,.screen-assignment-form input{background:#fff;border:1px solid #20202324;border-radius:7px;width:100%;min-height:42px;padding:0 10px}.screen-owned-list{gap:5px;max-height:130px;margin-top:12px;display:grid;overflow:auto}.screen-owned-list div{justify-content:space-between;align-items:center;gap:8px;font-size:12px;display:flex}.screen-owned-list button{padding:6px 9px}.screen-footer{color:#8a8a90;text-align:right;max-width:1680px;margin:14px auto 0;font-size:11px}.screen-account-manager{background:#ffffff8f;border:1px solid #ffffffdb;border-radius:8px;justify-content:space-between;align-items:flex-end;gap:18px;margin-bottom:22px;padding:18px 20px;display:flex}.screen-account-manager h2{margin:5px 0;font-size:20px}.screen-account-manager p:not(.eyebrow){color:#77777e;margin:0;font-size:13px}.screen-account-manager form{align-items:flex-end;gap:10px;margin-left:auto;display:flex}.screen-account-manager label{font-size:12px;font-weight:650}.screen-account-manager input{border:1px solid #dedee2;border-radius:6px;margin-top:5px;padding:9px;display:block}.screen-seat-overlay{z-index:12;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#1a1f2652;place-items:center;padding:24px;display:grid;position:fixed;inset:0}.screen-seat-overlay .screen-assignment-form{background:#ffffffe6;border:1px solid #ffffffe6;border-radius:12px;width:min(460px,100%);margin:0;padding:28px;position:relative;top:auto;left:auto;transform:none;box-shadow:0 24px 70px #141f2b38}.screen-seat-overlay .screen-assignment-form .wide{grid-column:1/-1}.screen-shell>.screen-grid .screen-assignment-form{z-index:12;background:#fffffff2;border:1px solid #ffffffe6;border-radius:12px;width:min(460px,100vw - 32px);margin:0;padding:28px;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 24px 70px #141f2b38}@media (width<=1100px){.screen-shell{padding:18px}.screen-grid{grid-template-columns:1fr 1fr}.screen-seats{grid-column:1/-1}.screen-seat-map{max-height:none}}@media (width<=700px){.screen-topbar{flex-wrap:wrap;align-items:flex-start;gap:12px}.screen-brand{flex:1;min-width:0}.screen-quote{text-align:left;flex-basis:100%;order:3;font-size:21px}.screen-grid{grid-template-columns:1fr}.screen-panel{padding:15px}.screen-seats{grid-column:auto}.screen-wallpaper-list,.screen-music-list{max-height:none}.screen-assignment-form{grid-template-columns:1fr}.screen-account-manager{flex-direction:column;align-items:flex-start}.screen-account-manager form{flex-direction:column;align-items:stretch;width:100%;margin:0}}.screen-nav{grid-template-columns:repeat(3,1fr);gap:24px;max-width:1280px;margin:clamp(80px,16vh,180px) auto 0;display:grid}.screen-nav button{color:#202023;min-height:250px;transition:transform .3s var(--fx-ease),box-shadow .3s ease,background .3s ease;animation:item-in .6s var(--fx-ease) both;background:#ffffff9e;border:1px solid #ffffffeb;border-radius:14px;flex-direction:column;justify-content:center;align-items:center;gap:14px;padding:28px;display:flex;box-shadow:inset 0 1px #fff,0 22px 52px #2d39481c}.screen-nav button:hover{background:#ffffffd1;transform:translateY(-6px);box-shadow:inset 0 1px #fff,0 28px 62px #2d39482b}.screen-nav b{font-size:28px}.screen-nav small{color:#85858b;font-size:14px}.screen-back{color:#55555b;background:#ffffffb3;border-radius:7px;align-items:center;gap:5px;margin:10px auto 18px;padding:10px 14px;display:inline-flex}.screen-back svg{transform:rotate(180deg)}.screen-shell[data-screen-view=wallpaper] .screen-grid>:not(.screen-wallpapers),.screen-shell[data-screen-view=music] .screen-grid>:not(.screen-music),.screen-shell[data-screen-view=seats] .screen-grid>:not(.screen-seats){display:none}.screen-shell[data-screen-view=wallpaper] .screen-grid,.screen-shell[data-screen-view=music] .screen-grid,.screen-shell[data-screen-view=seats] .screen-grid{max-width:1280px;display:block}.screen-shell[data-screen-view=wallpaper] .screen-wallpaper-list{grid-template-columns:repeat(4,minmax(0,1fr));max-height:calc(100vh - 220px)}.screen-shell[data-screen-view=music] .screen-music-list{max-height:calc(100vh - 350px)}.screen-shell[data-screen-view=seats] .screen-seat-map{max-height:calc(100vh - 300px)}.screen-panel{animation:surface-in .6s var(--fx-ease) both}.screen-shell:not([data-screen-view=menu]) .screen-quote{font-size:clamp(24px,2.4vw,38px);transform:none}.screen-shell[data-screen-view=menu] .screen-nav{align-content:center;align-items:center;min-height:calc(100vh - 190px);margin:0 auto;padding:0 20px 36px}.screen-shell[data-screen-view=menu] .screen-nav button{min-height:280px}.screen-shell[data-screen-view=menu] .screen-footer{position:absolute;bottom:20px;left:34px;right:34px}@media (width<=700px){.screen-topbar{padding-bottom:12px;display:flex}.screen-brand>img{width:60px;height:60px}.screen-brand b{font-size:22px}.screen-quote{white-space:normal;font-size:28px;line-height:1.3;transform:translateY(20px)}.screen-shell[data-screen-view=menu] .screen-nav{min-height:calc(100vh - 190px);padding:22px 0 54px}.screen-shell[data-screen-view=menu] .screen-nav button{min-height:145px}.screen-shell[data-screen-view=menu] .screen-footer{position:static}.screen-nav{grid-template-columns:1fr;gap:14px;margin-top:48px}.screen-nav button{min-height:150px}.screen-nav b{font-size:23px}.hero-page{padding-top:24px}.hero-page .teacher-hero{min-height:340px;margin-bottom:24px;padding:34px 24px}.hero-page .metric-grid{margin-bottom:20px}}.overlay{place-items:center!important;padding:16px!important;display:grid!important}.overlay>.sheet{place-self:center!important;margin:0!important}.screen-assignment-form{z-index:12;background:#fffffff2;border:1px solid #ffffffe6;border-radius:12px;width:min(460px,100vw - 32px);padding:28px;box-shadow:0 24px 70px #141f2b38,0 0 0 100vmax #1a1f2652;position:fixed!important;top:50%!important;left:50%!important;transform:translate(-50%,-50%)!important}.overlay{place-items:center;padding:24px}.overlay .sheet{max-height:min(88vh,760px);margin:auto;overflow:auto}@media (width<=700px){.overlay{place-items:center;padding:16px}.overlay .sheet{border-radius:12px;width:min(100%,520px);max-height:88vh;padding:26px 20px}}.screen-shell:not([data-screen-view=menu]) .screen-quote{transform:none}.classroom.shape-u .seat-groups{transform:perspective(900px)rotateX(1deg)}.classroom.shape-u .seat-group:nth-child(-n+2){transform:translateY(12px)}.classroom.shape-u .seat-group:nth-last-child(-n+2){transform:translateY(-12px)}.classroom.shape-islands .seat-groups{gap:34px}.classroom.shape-islands .seat-group{background:#ffffff47;border:1px solid #20202317;border-radius:8px;padding:10px}.sheet{animation:sheet-in .45s var(--fx-ease) both}.overlay{animation:.25s both overlay-in}.toast{animation:toast-in .4s var(--fx-ease) both}@keyframes ambient-sheen{0%,72%,to{background-position:150% 0}86%{background-position:-20% 0}}@keyframes panel-glint{0%,62%,to{background-position:160% 0}80%{background-position:-30% 0}}@keyframes surface-in{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes title-in{0%{opacity:0;transform:translateY(9px)}to{opacity:1;transform:translateY(0)}}@keyframes item-in{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes sheet-in{0%{opacity:0;transform:translateY(24px)scale(.985)}to{opacity:1;transform:translateY(0)scale(1)}}@keyframes overlay-in{0%{opacity:0}to{opacity:1}}@keyframes toast-in{0%{opacity:0;transform:translate(-50%,12px)scale(.96)}to{opacity:1;transform:translate(-50%)scale(1)}}@keyframes bidding-pulse{0%,to{box-shadow:0 0 #1e1e201a}50%{box-shadow:0 0 0 4px #1e1e200d}}@keyframes particle-drift{0%{transform:translate(-8px,-5px)}to{transform:translate(10px,8px)}}@keyframes particle-twinkle{0%,to{opacity:.72}50%{opacity:1}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}@media (width<=700px){.seat-settings{grid-template-columns:1fr 1fr}.seat-settings>div,.seat-settings .primary{grid-column:1/-1}}.topbar,.hero,.teacher-hero,.metric,.classroom,.reward,.data-list,.reward-manage,.auction-card,.media-submit,.media-card,.about-panel,.sheet,.login-card{-webkit-backdrop-filter:blur(18px)saturate(1.04);border-color:#7d889429;box-shadow:0 8px 24px #2d394812}.screen-shell{z-index:1;position:relative;background:0 0!important}.screen-shell>.line-field{pointer-events:none;opacity:.9;width:100vw;height:100vh;inset:0;z-index:-1!important;position:fixed!important}.screen-shell~.line-field,#root>.line-field{pointer-events:none;opacity:.9;width:100vw;height:100vh;inset:0;z-index:0!important;position:fixed!important}.screen-student-search{background:#fff;border:1px solid #20202324;border-radius:7px;grid-column:1/-1;width:100%;min-height:42px;padding:0 10px}.login-card label:has(input[name=username]):after{content:"学生注册账号请使用学号";color:#85858b;margin-top:5px;font-size:12px;font-weight:400;display:block}body{background-image:none}.shell:before{animation:none;display:none}.shell>.particle-field{display:none}.hero,.teacher-hero,.metric,.classroom,.reward,.data-list,.reward-manage,.auction-card,.media-submit,.media-card,.about-panel,.screen-panel,.screen-nav button,.seat-settings,.seat-admin article{-webkit-backdrop-filter:none;background:#ffffffc7}.screen-shell .screen-nav button,.screen-panel{animation:none}@media (width<=700px){.topbar,.sheet{-webkit-backdrop-filter:none}.mobile-nav{-webkit-backdrop-filter:none;background:#fafafbf7}.hero,.teacher-hero,.metric,.classroom,.reward,.data-list,.reward-manage,.auction-card,.media-submit,.media-card,.about-panel,.screen-panel,.screen-nav button{-webkit-backdrop-filter:none}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}.screen-panel,.screen-nav button{-webkit-backdrop-filter:blur(16px)saturate(1.04);border-color:#7d889429;box-shadow:0 10px 28px #2d394814}.screen-nav button:hover{box-shadow:0 12px 30px #2d39481a}html,body{max-width:100%;overflow-x:hidden}.topbar{min-width:0}.brand{flex:none}.topbar nav{min-width:0}.profile{flex:none;min-width:0}.tabs,.media-tabs{scrollbar-width:thin;overflow-x:auto}.tabs button,.media-tabs button{white-space:nowrap;flex:none}.seat-map-admin{max-width:100%;overflow:auto visible}.section-title,.manage-head{gap:16px}.section-title>*,.manage-head>*{min-width:0}.log b,.order b,.data-list b,.reward-manage b{overflow-wrap:anywhere}@media (width<=900px){.page{padding-top:48px}.two-col{gap:42px}.media-submit{grid-template-columns:1fr;gap:24px}.media-submit form{grid-template-columns:minmax(0,1fr) 120px}.review-grid{grid-template-columns:1fr}}@media (width<=700px){.topbar{gap:8px}.topbar nav{flex:auto}.topbar nav button{padding-inline:8px}.media-submit form{grid-template-columns:1fr}.page-heading h1{line-height:1.12}.section-title,.manage-head{align-items:flex-start}.section-title>span,.manage-head>p{white-space:nowrap;margin-top:5px}.seat-map-admin{padding-top:52px}.seat-map-admin:before{width:min(70%,300px)}.seat-settings{gap:10px;padding:14px}.data-list article,.reward-manage article{align-items:flex-start}.data-list article>button,.reward-manage article>button{flex:none}.sheet{padding:24px 20px}.overlay{padding:12px}.toast{text-align:center;max-width:calc(100vw - 32px)}}@media (width<=480px){.topbar{height:62px;padding-inline:10px}.brand{gap:6px;font-size:14px}.brand>span{width:28px;height:28px}.topbar nav button{padding-inline:6px;font-size:12px}.icon{margin-left:0;padding:5px}.page{padding:34px 12px 52px}.hero{margin-inline:-12px;padding:48px 18px}.hero h1,.page-heading h1,.teacher-hero h1{font-size:34px}.page-heading{margin-bottom:24px}.classroom{padding:10px}.board{width:72%;min-width:180px;margin-bottom:22px}.cinema-grid{gap:7px;padding-inline:4px}.seat{height:46px;padding:6px}.seat b{font-size:10px}.seat span{font-size:9px}.seat-settings{grid-template-columns:1fr}.seat-settings>div,.seat-settings .primary{grid-column:auto}.manage-head{flex-wrap:wrap}.manage-head .batch-actions,.manage-head>button{width:100%}.batch-actions button{min-height:40px}.tabs{margin-inline:-12px;padding-inline:12px}.media-tabs{padding-bottom:2px}.media-submit{margin-bottom:30px;padding:18px}.media-submit form{grid-template-columns:1fr}.media-submit .primary{width:100%}.review-actions{flex-direction:column}.review-actions button{width:100%}.order{flex-wrap:wrap;align-items:flex-start}.order small{min-width:calc(100% - 44px)}.order .pill{margin-left:auto}}.mobile-nav{display:none}.shell>.overlay{z-index:20;position:fixed;inset:0}.shell>.toast{z-index:30;position:fixed}.data-list article>.pill,.my-media .data-list article>.pill{white-space:nowrap;writing-mode:horizontal-tb;flex:none;min-width:max-content}.data-list article>div{min-width:0}.confirm-dialog{width:min(440px,100vw - 32px)}.confirm-actions{justify-content:flex-end;gap:10px;margin-top:24px;display:flex}.confirm-overlay{pointer-events:auto}.confirm-overlay .confirm-dialog{z-index:2;pointer-events:auto;position:relative}.confirm-overlay .confirm-actions,.confirm-overlay .confirm-actions button{z-index:3;pointer-events:auto;position:relative}.shell>.line-field{pointer-events:none;opacity:.9;width:100vw;height:100vh;inset:0;z-index:0!important;position:fixed!important}.shell>.particle-field{pointer-events:none;opacity:.62;inset:0;overflow:hidden;z-index:0!important;position:fixed!important}.particle-field:before,.particle-field:after{content:"";background:#2d2d32ad;border-radius:50%;width:4px;height:4px;animation:26s ease-in-out infinite alternate particle-drift,5s ease-in-out infinite particle-twinkle;position:absolute;top:0;left:0;box-shadow:8vw 14vh #2d2d329e,19vw 68vh #2d2d327a,31vw 28vh #2d2d3270,44vw 83vh #2d2d3294,57vw 17vh #2d2d3275,69vw 53vh #2d2d3294,81vw 25vh #2d2d3275,94vw 74vh #2d2d3294,13vw 91vh #2d2d3266,36vw 55vh #2d2d327a,63vw 91vh #2d2d3270,88vw 43vh #2d2d3285,6vw 82vh #2d2d3266,25vw 43vh #2d2d3270,52vw 64vh #2d2d3280,77vw 88vh #2d2d326b,90vw 16vh #2d2d3275}.particle-field:after{opacity:.82;width:3px;height:3px;animation-duration:34s;animation-direction:alternate-reverse;box-shadow:4vw 43vh #2d2d3280,26vw 9vh #2d2d326b,49vw 46vh #2d2d327a,74vw 12vh #2d2d3270,97vw 59vh #2d2d327a,22vw 78vh #2d2d3261,61vw 71vh #2d2d3270,85vw 88vh #2d2d3266,16vw 32vh #2d2d3266,68vw 35vh #2d2d326b}@media (width<=700px){:root{--mobile-nav-height:68px}.shell>.line-field{opacity:.72}body{font-size:15px}.shell{padding-bottom:calc(var(--mobile-nav-height) + env(safe-area-inset-bottom))}.topbar{gap:10px;height:64px;padding:0 16px}.desktop-nav{display:none!important}.brand{font-size:16px}.brand>span{width:32px;height:32px}.profile{gap:2px}.profile>span{width:32px;height:32px}.profile .icon{place-items:center;width:42px;height:42px;margin:0;padding:0;display:grid}.mobile-nav{z-index:8;min-height:var(--mobile-nav-height);padding:7px 8px calc(7px + env(safe-area-inset-bottom));-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);background:#fafafbf0;border-top:1px solid #2020231f;grid-template-columns:repeat(4,1fr);display:grid;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -8px 24px #20202314}.mobile-nav:has(button:nth-child(3):last-child){grid-template-columns:repeat(3,1fr)}.mobile-nav button{color:#85858c;background:0 0;border-radius:7px;flex-direction:column;justify-content:center;align-items:center;gap:3px;min-width:0;min-height:52px;font-size:12px;font-weight:600;display:flex}.mobile-nav button.active{color:#202023;background:#20202314}.mobile-nav button:active{transform:scale(.96)}.page{padding:38px 18px 72px}.hero{min-height:410px;margin-inline:-18px;padding:56px 24px}.hero h1,.page-heading h1,.teacher-hero h1{font-size:39px;line-height:1.12}.hero>p:not(.eyebrow){font-size:16px;line-height:1.6}.eyebrow{font-size:12px}.page-heading{margin-bottom:30px}.page-heading p:not(.eyebrow){font-size:16px;line-height:1.55}.metric{min-height:118px;padding:20px}.metric p{margin:12px 0 4px;font-size:14px}.metric strong{font-size:29px}.section-title h2,.manage-head h2{font-size:23px}.section-title>span,.manage-head p{font-size:14px}.log,.order{min-height:58px;padding:16px 2px}.log b,.order b{font-size:15px}.log small,.order small{font-size:13px}.classroom{border-radius:8px;padding:16px 12px;box-shadow:inset 0 1px #fff,0 12px 26px #2020230f}.classroom:after{content:"左右滑动查看完整座位图";color:#85858c;text-align:center;padding-top:8px;font-size:12px;display:block}.cinema-grid{gap:10px 12px;min-width:700px;padding:0 8px 8px}.cinema-grid .seat{min-width:78px;height:60px;padding:8px}.cinema-grid .seat b{font-size:12px;line-height:1.25}.cinema-grid .seat span{margin-top:5px;font-size:12px}.board{min-width:230px;height:38px;margin-bottom:25px;font-size:11px}.legend{gap:14px;font-size:13px}.auction-strip{margin-top:38px}.auction-list{gap:10px}.auction-card{gap:12px;min-height:68px;padding:13px}.auction-card b{font-size:15px}.auction-card small{font-size:12px}.auction-card>strong{font-size:19px}.seat-avatar{width:42px;height:42px;font-size:12px}.rewards{gap:12px}.reward{min-height:250px;padding:20px}.reward h2{font-size:21px}.reward p{font-size:14px}.reward footer strong{font-size:23px}.reward footer .primary,.media-card footer button,.manage-head>button{min-height:44px}.media-submit{padding:22px 20px}.media-submit h2{font-size:24px}.media-submit label{font-size:14px}.media-submit input{min-height:44px;font-size:15px}.media-submit input[type=file]{padding:10px}.media-submit small,.media-kind{font-size:12px}.media-meta h3{font-size:17px}.media-meta p{font-size:13px}.tabs button,.media-tabs button{min-height:44px;padding:10px 14px;font-size:14px}.seat-settings{padding:16px}.seat-settings label{font-size:13px}.seat-settings input{min-height:44px;font-size:15px}.seat-settings .primary{min-height:46px}.seat-admin{gap:10px}.seat-admin article{min-width:142px;padding:13px}.seat-admin small{font-size:11px}.seat-admin b{font-size:14px}.seat-admin button{min-height:42px;font-size:13px}.data-list article,.reward-manage article{min-height:72px;padding:16px}.data-list b,.reward-manage b{font-size:15px}.data-list small,.reward-manage small{font-size:13px}.form label{margin:16px 0;font-size:14px}.form input{min-height:46px;padding:11px 12px;font-size:16px}.primary,.secondary{min-height:44px;padding:10px 15px}.overlay{align-items:end;padding:0}.sheet{width:100%;max-height:min(86vh,720px);padding:28px 22px calc(24px + env(safe-area-inset-bottom));border-radius:12px 12px 0 0;overflow:auto}.sheet h2{padding-right:32px;font-size:25px}.close{width:42px;height:42px;top:14px;right:14px}.close svg{width:20px;height:20px}.bid-input{height:64px;margin-top:24px}.bid-input button{width:58px;min-width:58px}.bid-input input{font-size:26px}.hint,.muted{font-size:13px;line-height:1.5}.toast{bottom:calc(var(--mobile-nav-height) + 12px + env(safe-area-inset-bottom));max-width:calc(100vw - 32px);font-size:14px}.site-footer{padding-bottom:12px}}@media (width<=380px){.topbar{padding-inline:12px}.brand{font-size:15px}.page{padding-inline:14px}.hero{margin-inline:-14px;padding-inline:20px}.hero h1,.page-heading h1,.teacher-hero h1{font-size:35px}.cinema-grid{min-width:660px}}.topbar,.hero,.teacher-hero,.metric,.classroom,.reward,.data-list,.reward-manage,.auction-card,.media-submit,.media-card,.about-panel,.sheet,.login-card{isolation:isolate;-webkit-backdrop-filter:blur(28px)saturate(1.22);border:1px solid #ffffffc7;position:relative;box-shadow:inset 0 1px #fffffffa,inset 0 -1px #78879829,0 18px 48px #2d39481c,0 2px 8px #ffffff8c}.topbar:after,.hero:before,.teacher-hero:before,.metric:before,.classroom:before,.reward:before,.data-list:before,.reward-manage:before,.auction-card:before,.media-submit:before,.media-card:before,.about-panel:before,.sheet:before,.login-card:before{content:"";z-index:-1;pointer-events:none;border-radius:inherit;background:linear-gradient(112deg,#ffffffa8 0%,#ffffff14 29%,#ffffff05 56%,#ffffff7a 100%) 0 0/230% 100%;animation:13s ease-in-out infinite glass-sweep;position:absolute;inset:1px}.metric:hover,.reward:hover,.auction-card:hover,.media-card:hover{border-color:#fffffffa;box-shadow:inset 0 1px #fff,inset 0 -1px #7887982e,0 24px 58px #2d394829,0 0 0 1px #ffffff4d}.metric>*,.reward>*,.auction-card>*,.media-card>*,.about-panel>*,.media-submit>*,.teacher-hero>*,.hero>*{z-index:1;position:relative}.hero:after,.teacher-hero:after{opacity:.75;background:linear-gradient(105deg,#0000 24%,#ffffffb8 47%,#0000 68%) 0 0/240% 100%;animation:10s ease-in-out infinite glass-sweep}@keyframes glass-environment{0%{background-position:0 30%}to{background-position:100% 70%}}@keyframes glass-sweep{0%,18%,to{background-position:160% 0}52%,70%{background-position:-30% 0}}.shell{animation-duration:52s}.topbar,.hero,.teacher-hero,.metric,.classroom,.reward,.data-list,.reward-manage,.auction-card,.media-submit,.media-card,.about-panel,.sheet,.login-card{-webkit-backdrop-filter:blur(21px)saturate(1.1)}.topbar:after,.hero:before,.teacher-hero:before,.metric:before,.classroom:before,.reward:before,.data-list:before,.reward-manage:before,.auction-card:before,.media-submit:before,.media-card:before,.about-panel:before,.sheet:before,.login-card:before{opacity:.72;animation-duration:26s}.hero:after,.teacher-hero:after{opacity:.42;animation-duration:22s}.shell>.particle-field{opacity:.46}@media (width<=700px){.shell{background-size:300% 300%}.topbar,.metric,.classroom,.reward,.data-list,.reward-manage,.auction-card,.media-submit,.media-card,.about-panel,.sheet,.login-card{-webkit-backdrop-filter:blur(18px)saturate(1.06)}}.topbar,.hero,.teacher-hero,.metric,.classroom,.reward,.data-list,.reward-manage,.auction-card,.media-submit,.media-card,.about-panel,.sheet,.login-card,.screen-panel,.screen-nav button{-webkit-backdrop-filter:blur(18px)saturate(1.04);border-color:#7d889429;box-shadow:0 8px 24px #2d394812}.topbar:after,.hero:before,.teacher-hero:before,.metric:before,.classroom:before,.reward:before,.data-list:before,.reward-manage:before,.auction-card:before,.media-submit:before,.media-card:before,.about-panel:before,.sheet:before,.login-card:before,.hero:after,.teacher-hero:after{animation:none;display:none}.metric:hover,.reward:hover,.auction-card:hover,.media-card:hover,.screen-nav button:hover{box-shadow:0 10px 28px #2d394817}.primary{box-shadow:0 5px 14px #1a1f261f}.screen-shell{background:#edf0f3}.shell:before,.topbar:after,.hero:before,.hero:after,.teacher-hero:before,.teacher-hero:after,.metric:before,.classroom:before,.reward:before,.data-list:before,.reward-manage:before,.auction-card:before,.media-submit:before,.media-card:before,.about-panel:before,.sheet:before,.login-card:before{animation:none!important;display:none!important}.shell{background:#edf0f3!important;animation:none!important}.hero,.teacher-hero,.metric,.classroom,.reward,.data-list,.reward-manage,.auction-card,.media-submit,.media-card,.about-panel,.screen-panel,.screen-nav button,.seat-settings,.seat-admin article{-webkit-backdrop-filter:none!important}.topbar,.sheet{-webkit-backdrop-filter:blur(10px)!important}.metric:hover strong{text-shadow:none!important}.reward:hover .reward-art{filter:none!important}.seat.bidding:not(:disabled),.screen-shell .screen-nav button,.screen-panel{animation:none!important}@media (width<=700px){.topbar,.sheet,.mobile-nav{-webkit-backdrop-filter:none!important}.mobile-nav{background:#fafafbf7!important}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}.seat-admin-tile{background:#fff;border:1px solid #e5e5e9;border-radius:7px;min-width:0;padding:10px}.seat-admin-tile.owned{color:#fff;background:#29292b}.seat-admin-tile small,.seat-admin-tile b{display:block}.seat-admin-tile small{color:#86868b;font-size:10px}.seat-admin-tile.owned small{color:#d1d1d6}.seat-admin-tile b{white-space:nowrap;text-overflow:ellipsis;margin:4px 0 8px;font-size:12px;overflow:hidden}.seat-admin-tile button{width:100%;padding:7px;font-size:11px}.legacy-seat-layout{margin-bottom:42px}.auction-workflow{margin-top:42px}.auction-rollback{justify-content:flex-end;margin-top:12px;display:flex}.danger-action{color:#b52828!important}.modal-layer{isolation:isolate;z-index:10000!important;pointer-events:auto!important;place-items:center!important;padding:16px!important;display:grid!important;position:fixed!important;inset:0!important}.modal-layer>.sheet{z-index:1!important;pointer-events:auto!important;place-self:center!important;width:min(520px,100vw - 32px)!important;max-height:min(88vh,760px)!important;margin:0!important;position:relative!important;overflow:auto!important}.modal-layer .close,.modal-layer button,.modal-layer input,.modal-layer select,.modal-layer textarea{pointer-events:auto!important}.modal-layer .confirm-actions{z-index:2;position:relative}@media (width<=700px){.modal-layer{padding:16px!important}.modal-layer>.sheet{border-radius:12px!important;width:min(100%,520px)!important;max-height:88vh!important;padding:26px 20px!important}}.overlay:not(.modal-layer){z-index:9000!important;pointer-events:auto!important;place-items:center!important;padding:16px!important;display:grid!important;position:fixed!important;inset:0!important}.overlay:not(.modal-layer)>.sheet{z-index:1!important;pointer-events:auto!important;place-self:center!important;max-height:min(88vh,760px)!important;margin:0!important;position:relative!important;overflow:auto!important}@media (width<=700px){.overlay:not(.modal-layer){padding:16px!important}.overlay:not(.modal-layer)>.sheet{border-radius:12px!important;width:min(100%,520px)!important;max-height:88vh!important}}.auction-workflow .auction-list{display:none}.screen-classroom-map{background:#ffffffb8;border:1px solid #e5e5e9;border-radius:8px;margin:12px 0 20px;padding:18px;overflow:auto}.student-picker{gap:6px;width:100%;display:grid}.student-picker input,.student-picker select{color:#303035;background:#fff;border:1px solid #20202324;border-radius:7px;width:100%;min-height:42px;padding:0 10px}.form .student-picker{margin-top:6px}.screen-nav:has(>button:nth-child(2):last-child){grid-template-columns:repeat(2,minmax(280px,420px));justify-content:center}.screen-seat-access{background:#fff;border:1px solid #e5e5e9;border-radius:8px;justify-content:space-between;align-items:center;gap:24px;margin-bottom:24px;padding:18px 20px;display:flex}.screen-seat-access h2{margin:5px 0;font-size:20px}.screen-seat-access p:not(.eyebrow){color:#77777e;margin:0;font-size:13px}.switch-control{color:#303035;flex:none;align-items:center;gap:10px;font-weight:650;display:flex}.switch-control input{accent-color:#087cff;width:42px;height:24px}@media (width<=700px){.screen-nav:has(>button:nth-child(2):last-child){grid-template-columns:1fr}.screen-seat-access{flex-direction:column;align-items:flex-start;gap:14px}.switch-control{justify-content:space-between;width:100%}}.screen-preassign-actions{flex-wrap:wrap;justify-content:flex-end;align-items:flex-end;gap:10px;display:flex}.screen-preassign-actions>span{color:#85858b;align-self:center;font-size:13px}.screen-preassign-actions .primary{white-space:nowrap}@media (width<=700px){.screen-preassign-actions{flex-direction:column;align-items:stretch;gap:8px}.screen-preassign-actions>span{align-self:auto}.screen-preassign-actions .primary{width:100%}}.screen-classroom-map .board{margin-bottom:22px}.screen-seat.available{color:#1d1d1f;background:#f3f4f6}.screen-seat.active{color:#006dd9;background:#e3f0ff}.screen-seat.skipped,.screen-seat.no_bid{color:#996800;background:#fff1d5}.screen-seat.won{color:#087439;background:#dff7e8}.auction-debug-controls{color:#7b6500;background:#fff7e5;border:1px solid #f0dfae;border-radius:8px;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px;padding:12px 14px;font-size:12px;display:flex}.auction-debug-controls span{flex:1}.top-auction-controls{background:#fff;border:1px solid #e5e5e9;border-radius:8px;margin-bottom:24px;padding:14px 16px}.top-auction-controls .manage-head{align-items:center;margin:0}.auction-control-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;display:flex}.auction-control-actions label{color:#6e6e73;align-items:center;gap:5px;font-size:12px;display:flex}.auction-control-actions input{border:1px solid #dedee2;border-radius:6px;width:64px;padding:7px}.legacy-seat-layout .seat-admin-tile{height:68px;padding:6px 8px;overflow:hidden}.legacy-seat-layout .seat-admin-tile small{font-size:9px}.legacy-seat-layout .seat-admin-tile b{margin:2px 0 4px;font-size:11px}.legacy-seat-layout .seat-admin-tile button{padding:3px 6px;line-height:1}