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4px 0 var(--text-color);transition:all.15s ease;position:relative;display:flex;justify-content:center;align-items:center;gap:10px}.signin-submit:hover:not(:disabled){background-color:var(--lime);color:var(--text-color);transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--text-color)}.signin-submit:active:not(:disabled){transform:translate(2px,2px);box-shadow:2px 2px 0 var(--text-color)}.signin-submit:disabled{background-color:#ccc;cursor:not-allowed;transform:none;box-shadow:none;border-color:#999}.spinner{width:20px;height:20px;border:3px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin 1s ease-in-out infinite}.signin-submit:hover .spinner{border-color:rgba(0,0,0,.1);border-top-color:#000}@media(max-width:480px){.signin-card{padding:30px 20px;border-radius:0;border-left:none;border-right:none;box-shadow:none}.signin-container{max-width:100%}}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.7);backdrop-filter:blur(5px);display:flex;justify-content:center;align-items:center;z-index:2000;opacity:0;pointer-events:none;transition:opacity.3s ease}.modal-overlay.open{opacity:1;pointer-events:all}.modal-window{background:#fff;width:90%;max-width:500px;border:3px solid#1a1a1a;box-shadow:10px 10px 0#1a1a1a;border-radius:16px;padding:30px;transform:translatey(20px);transition:transform.3s ease;position:relative}.modal-overlay.open .modal-window{transform:translatey(0)}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;border-bottom:2px dashed#ddd;padding-bottom:15px}.modal-title{font-size:1.8rem;font-weight:900;color:var(--purple);text-transform:uppercase}.close-btn{background:transparent;border:none;font-size:2rem;line-height:1;cursor:pointer;color:#1a1a1a;transition:transform.2s}.close-btn:hover{transform:scale(1.1)}.form-group{margin-bottom:15px}.form-label{display:block;font-weight:700;margin-bottom:5px;font-size:.95rem}.form-input{width:100%;padding:12px;border:2px solid#1a1a1a;border-radius:8px;font-family:inherit;font-size:1rem;transition:all.2s;box-sizing:border-box}.form-input:focus{outline:none;box-shadow:4px 4px 0 var(--cyan);border-color:#1a1a1a}.modal-footer{margin-top:24px;text-align:right}.btn{padding:12px 24px;font-size:1rem;font-weight:800;color:#fff;background-color:var(--purple);border:3px solid#1a1a1a;border-radius:50px;cursor:pointer;box-shadow:4px 4px 0#1a1a1a;transition:all.15s ease}.btn:hover:not(:disabled){background-color:var(--lime);color:var(--text-color);transform:translate(-2px,-2px);box-shadow:6px 6px 0#1a1a1a}.btn:active:not(:disabled){transform:translate(2px,2px);box-shadow:2px 2px 0#1a1a1a}.btn:disabled{background-color:#ccc;cursor:not-allowed;transform:none;box-shadow:none;border-color:#999}.btn-primary{background-color:var(--purple)}.contact-container{display:flex;flex-direction:column;align-items:center;gap:24px;text-align:center}.contact-desc{font-size:1rem;color:#666;margin:0;line-height:1.5}.qr-section{display:flex;flex-direction:column;align-items:center;gap:12px}.qr-placeholder{width:200px;height:200px;background-color:#f0f0f0;border:2px dashed#ccc;border-radius:12px;display:flex;justify-content:center;align-items:center;color:#999;font-size:.9rem}.qr-tip{font-size:.9rem;color:#888;margin:0}.email-section{width:100%;display:flex;flex-direction:column;gap:8px;text-align:left}.email-section label{font-size:.9rem;font-weight:700;color:var(--text-color);margin-left:4px}.email-box{display:flex;align-items:center;justify-content:space-between;background:#f9f9f9;border:2px solid#1a1a1a;border-radius:12px;padding:10px 16px}.email-text{font-size:1rem;font-weight:500;color:var(--text-color)}.copy-btn{background:var(--purple);color:#fff;border:none;padding:6px 12px;border-radius:6px;font-size:.85rem;font-weight:600;cursor:pointer;transition:all.2s}.copy-btn:hover{background:var(--lime);color:var(--text-color)}.common-header{width:100%;position:sticky;top:0;z-index:100;background:transparent}.common-header__glass-container{width:100%;height:72px;background:rgba(255,255,255,.7);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.5);box-shadow:0 4px 30px rgba(0,0,0,3%);transition:all.3s ease}.common-header__content{max-width:1200px;height:100%;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between}.common-header__logo{display:flex;align-items:center;flex-shrink:0;cursor:pointer;transition:opacity.3s}.common-header__logo img{height:36px;width:auto}.common-header__logo:hover{opacity:.8}.common-header__nav{flex:1;display:flex;justify-content:center}.common-header__user{display:flex;align-items:center;flex-shrink:0}.common-header__user-pill{display:flex;align-items:center;gap:10px;padding:6px 12px 6px 6px;background:rgba(255,255,255,.5);border:1px solid rgba(255,255,255,.8);border-radius:30px;cursor:pointer;transition:all.3s cubic-bezier(.4,0,.2,1);box-shadow:0 2px 8px rgba(0,0,0,2%)}.common-header__user-pill:hover{background:#fff;box-shadow:0 4px 12px rgba(0,0,0,8%);transform:translatey(-1px)}.common-header__avatar{flex-shrink:0;border:2px solid#fff;box-shadow:0 2px 6px rgba(0,0,0,.1)}.common-header__username{font-size:14px;font-weight:500;color:#333;max-width:100px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.common-header__arrow{font-size:10px;color:#999;margin-right:4px;transition:transform.3s}.common-header__user-pill:hover .common-header__arrow{transform:rotate(180deg)}.common-header__login-btn{display:inline-flex;align-items:center;justify-content:center;padding:8px 20px;border-radius:20px;font-size:14px;font-weight:600;text-decoration:none;transition:all.3s ease;background:rgba(0,122,255,.1);color:#007aff;border:1px solid rgba(0,122,255,.1)}.common-header__login-btn:hover{background:#007aff;color:#fff;border-color:#007aff;box-shadow:0 4px 12px rgba(0,122,255,.3);transform:translatey(-1px)}:global .glass-dropdown-menu .ant-dropdown-menu{background:rgba(255,255,255,.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.6);box-shadow:0 8px 32px rgba(0,0,0,.12);border-radius:12px;padding:6px}:global .glass-dropdown-menu .ant-dropdown-menu .ant-dropdown-menu-item{border-radius:8px;padding:8px 16px;color:#444;transition:all.2s}:global .glass-dropdown-menu .ant-dropdown-menu .ant-dropdown-menu-item:hover{background:rgba(0,122,255,.1);color:#007aff}:global .glass-dropdown-menu .ant-dropdown-menu .ant-dropdown-menu-item .anticon{margin-right:8px}@media(max-width:768px){.common-header__content{padding:0 16px}.common-header__username,.common-header__arrow{display:none}.common-header__user-pill{padding:4px;border-radius:50%;gap:0}.common-header__avatar{margin:0}}.student-page{width:100%;min-height:100vh;position:relative;background:linear-gradient(135deg,#f5f7fa 0%,#c3cfe2 100%);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:#1d1d1f;overflow-x:hidden}.page-background-blobs{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;pointer-events:none;overflow:hidden}.page-background-blobs .blob{position:absolute;border-radius:50%;filter:blur(80px);opacity:.6;animation:float 10s infinite ease-in-out alternate}.page-background-blobs .blob-1{top:-10%;left:-10%;width:600px;height:600px;background:linear-gradient(to right,#fbc2eb,#a6c1ee)}.page-background-blobs .blob-2{bottom:-10%;right:-10%;width:500px;height:500px;background:linear-gradient(to top,#ff9a9e,#fecfef);animation-delay:-5s}.page-background-blobs .blob-3{top:40%;left:40%;width:300px;height:300px;background:linear-gradient(120deg,#84fab0 0%,#8fd3f4 100%);animation-delay:-2s}.student-main{position:relative;z-index:2;max-width:1280px;margin:0 auto;padding:24px 40px 60px}.glass-welcome-banner{background:rgba(255,255,255,.65);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.5);box-shadow:0 8px 32px 0 rgba(31,38,135,8%);border-radius:28px;position:relative;height:280px;display:flex;align-items:center;justify-content:space-between;padding:0 60px;margin-bottom:48px;overflow:hidden;background:rgba(255,255,255,.4)}.glass-welcome-banner .banner-content{position:relative;z-index:10;flex:1;max-width:550px;margin-right:20px}.glass-welcome-banner .banner-title{font-size:36px;font-weight:800;margin-bottom:16px;color:#333}.glass-welcome-banner .banner-title .highlight{background:linear-gradient(120deg,#007aff,#00c6ff);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.glass-welcome-banner .banner-subtitle{font-size:16px;color:rgba(0,0,0,.6);line-height:1.6}@keyframes banner-float{0%,to{transform:translatey(0)}50%{transform:translatey(-12px)}}.banner-stickers{position:relative;width:450px;height:100%;flex-shrink:0;pointer-events:none}.sticker{position:absolute;filter:drop-shadow(0 12px 20px rgba(0,0,0,.12));will-change:transform}.sticker.sticker-main-blue{width:130px;top:50px;right:80px;z-index:1;animation:banner-float 5s infinite ease-in-out}.sticker.sticker-main-pink{width:115px;bottom:40px;right:180px;z-index:3;transform:rotate(350deg);animation:banner-float 6s infinite ease-in-out -1s}.sticker.sticker-main-orange{width:100px;bottom:20px;right:70px;z-index:4;transform:rotate(5deg);animation:banner-float 5.5s infinite ease-in-out -2.5s}.sticker.sticker-main-green{width:105px;top:90px;right:-10px;z-index:2;transform:rotate(15deg);animation:banner-float 6.5s infinite ease-in-out -.5s}.sticker.sticker-float-1{width:50px;top:30px;right:250px;transform:rotate(25deg);animation:banner-float 8s infinite ease-in-out}.sticker.sticker-float-2{width:40px;bottom:60px;right:-30px;transform:rotate(345deg);animation:banner-float 7s infinite ease-in-out -3s}.glass-section{margin-bottom:48px}.section-header{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:24px;padding:0 8px}.section-header .header-title{display:flex;align-items:center;gap:12px}.section-header .header-title h2{font-size:24px;font-weight:700;color:#1d1d1f;margin:0}.section-header .header-title .icon-box{width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:20px;box-shadow:0 4px 10px rgba(0,0,0,.1)}.section-header .header-title .icon-box.blue{background:linear-gradient(135deg,#4facfe,#00f2fe)}.section-header .header-title .icon-box.purple{background:linear-gradient(135deg,#a18cd1,#fbc2eb)}.section-header .header-more{font-size:14px;font-weight:500;color:#86868b;cursor:pointer;display:flex;align-items:center;gap:4px;transition:color.2s;background:rgba(255,255,255,.4);padding:6px 12px;border-radius:20px;backdrop-filter:blur(5px)}.section-header .header-more:hover{color:#007aff;background:rgba(255,255,255,.8)}.carousel-container{position:relative;display:flex;align-items:center;overflow:visible;padding:20px 0;margin:-20px 0}.glass-scroll-track{display:flex;gap:24px;overflow-x:auto;padding:15px 4px 35px;scroll-snap-type:x mandatory;scroll-behavior:smooth;width:100%;scrollbar-width:none}.glass-scroll-track::-webkit-scrollbar{display:none}.glass-topic-card{background:rgba(255,255,255,.65);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.5);box-shadow:0 8px 32px 0 rgba(31,38,135,8%);border-radius:28px;background:rgba(255,255,255,.75);width:420px;height:240px;flex-shrink:0;padding:20px;display:flex;gap:24px;cursor:pointer;transition:all.3s cubic-bezier(.25,.8,.25,1);scroll-snap-align:start}.glass-topic-card:hover{transform:translatey(-5px)scale(1.01);box-shadow:0 20px 40px rgba(0,0,0,.12);border-color:#fff;z-index:1}.glass-topic-card .topic-cover-wrapper{width:160px;height:100%;border-radius:20px;overflow:hidden;position:relative;flex-shrink:0;box-shadow:0 8px 16px rgba(0,0,0,.1)}.glass-topic-card .topic-cover-wrapper img,.glass-topic-card .topic-cover-wrapper .placeholder-cover{width:100%;height:100%;object-fit:cover}.glass-topic-card .topic-cover-wrapper .gloss-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(255,255,255,.4)0%,rgba(255,255,255,0)60%)}.glass-topic-card .topic-info{flex:1;display:flex;flex-direction:column;justify-content:space-between;padding:8px 0;min-width:0}.glass-topic-card .topic-info .topic-badges{display:flex;gap:8px;margin-bottom:12px}.glass-topic-card .topic-info .topic-badges .glass-badge{font-size:12px;color:#86868b;background:rgba(0,0,0,4%);padding:4px 10px;border-radius:8px;border:1px solid rgba(0,0,0,2%)}.glass-topic-card .topic-info .topic-title{font-size:20px;font-weight:700;color:#1d1d1f;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.glass-topic-card .topic-info .topic-desc{font-size:14px;color:#86868b;line-height:1.5;height:42px;overflow:hidden;margin-bottom:12px;white-space:normal;word-break:break-all}.glass-topic-card .topic-info .topic-author{font-size:13px;color:#999;display:flex;align-items:center;gap:6px}.glass-nav-btn{width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.8);backdrop-filter:blur(10px);border:1px solid#fff;box-shadow:0 4px 12px rgba(0,0,0,.1);display:flex;align-items:center;justify-content:center;font-size:18px;color:#007aff;cursor:pointer;position:absolute;z-index:10;transition:all.2s}.glass-nav-btn:hover{transform:scale(1.1);background:#fff;box-shadow:0 8px 20px rgba(0,0,0,.15)}.glass-nav-btn.prev{left:-24px}.glass-nav-btn.next{right:-24px}.glass-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;padding:15px;margin:-15px}.glass-grid .grid-item-wrapper .ant-card{background:rgba(255,255,255,.7)!important;backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.5)!important;border-radius:20px!important;box-shadow:0 4px 16px rgba(0,0,0,5%)!important;transition:all.3s ease}.glass-grid .grid-item-wrapper .ant-card:hover{transform:translatey(-4px);box-shadow:0 12px 28px rgba(0,0,0,.12)!important;z-index:10}.glass-empty{grid-column:1/-1;width:100%;padding:40px;text-align:center;color:#86868b;background:rgba(255,255,255,.4);border-radius:20px}:global .ant-select-dropdown,:global .ant-picker-dropdown,:global .ant-dropdown-menu-submenu-popup .ant-dropdown-menu,:global .ant-dropdown-menu{background-color:rgba(255,255,255,.85)!important;backdrop-filter:blur(20px)!important;-webkit-backdrop-filter:blur(20px);box-shadow:0 10px 40px rgba(0,0,0,.15)!important;border:1px solid rgba(255,255,255,.5);border-radius:12px!important;padding:6px!important}:global .ant-select-dropdown .ant-select-item-option-content,:global .ant-picker-dropdown .ant-select-item-option-content,:global .ant-dropdown-menu-submenu-popup .ant-dropdown-menu .ant-select-item-option-content,:global .ant-dropdown-menu .ant-select-item-option-content,:global .ant-select-dropdown .ant-dropdown-menu-item,:global .ant-picker-dropdown .ant-dropdown-menu-item,:global .ant-dropdown-menu-submenu-popup .ant-dropdown-menu .ant-dropdown-menu-item,:global .ant-dropdown-menu .ant-dropdown-menu-item{color:#1d1d1f!important;font-weight:500;border-radius:8px}:global .ant-select-dropdown .ant-select-item-option-selected,:global .ant-picker-dropdown .ant-select-item-option-selected,:global .ant-dropdown-menu-submenu-popup .ant-dropdown-menu .ant-select-item-option-selected,:global .ant-dropdown-menu .ant-select-item-option-selected{background-color:rgba(0,122,255,.12)!important;color:#007aff!important}:global .ant-select-dropdown .ant-select-item-option-active,:global .ant-picker-dropdown .ant-select-item-option-active,:global .ant-dropdown-menu-submenu-popup .ant-dropdown-menu .ant-select-item-option-active,:global .ant-dropdown-menu .ant-select-item-option-active{background-color:rgba(0,0,0,4%)!important}@media(max-width:768px){.student-main{padding:20px 16px 60px}.glass-welcome-banner{padding:24px;height:auto;flex-direction:column;text-align:center}.glass-welcome-banner .banner-content{max-width:100%;margin-right:0}.glass-welcome-banner .banner-stickers{position:relative;width:100%;height:220px;margin-top:24px;display:flex;justify-content:center}.glass-welcome-banner .banner-stickers .sticker{position:relative;top:auto;right:auto;bottom:auto;left:auto;transform:scale(.7)!important;margin:0 -20px}.glass-topic-card{min-width:85vw;height:auto;flex-direction:column}.glass-topic-card .topic-cover-wrapper{width:100%;height:160px}.glass-nav-btn{display:none}}:root{--primary-color:#007aff;--secondary-color:#5856d6;--text-main:#1d1d1f;--text-secondary:#86868b;--glass-bg:rgba(255, 255, 255, 0.65);--glass-border:rgba(255, 255, 255, 0.4);--glass-shadow:0 8px 32px 0 rgba(31, 38, 135, 0.1);--radius-xl:32px;--radius-lg:20px}.student-auth-page{width:100%;min-height:100vh;display:flex;align-items:center;justify-content:center;position:relative;background:linear-gradient(135deg,#f5f7fa 0%,#c3cfe2 100%);overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}.student-auth-container{position:relative;z-index:10;width:100%;max-width:440px;padding:20px}.student-auth-glass-card{background:var(--glass-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--glass-border);box-shadow:var(--glass-shadow);border-radius:var(--radius-xl);padding:40px 32px;overflow:hidden;position:relative}.student-auth-container.embedded{padding:0}.student-auth-glass-card:before{content:"";position:absolute;top:0;left:0;right:0;height:50%;background:linear-gradient(180deg,rgba(255,255,255,.2)0%,rgba(255,255,255,0)100%);pointer-events:none}.student-auth-header{text-align:center;margin-bottom:32px}.student-auth-title{font-size:28px;font-weight:800;color:var(--text-main);margin-bottom:8px;letter-spacing:-.5px}.student-auth-title .highlight{background:linear-gradient(120deg,var(--primary-color),var(--secondary-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.student-auth-subtitle{color:var(--text-secondary);font-size:15px;font-weight:500}.auth-mode-switch-glass{display:flex;position:relative;background:rgba(0,0,0,5%);padding:4px;border-radius:var(--radius-lg);margin-bottom:32px;border:1px solid rgba(255,255,255,.2)}.mode-btn-glass{flex:1;position:relative;z-index:2;padding:10px;font-size:15px;font-weight:600;color:var(--text-secondary);background:transparent;border:none;border-radius:16px;cursor:pointer;transition:color.3s ease}.mode-btn-glass.active{color:var(--primary-color)}.switch-indicator{position:absolute;top:4px;bottom:4px;width:calc(50% - 4px);background:#fff;border-radius:16px;box-shadow:0 2px 8px rgba(0,0,0,8%);transition:all.3s 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