.lang-toggle{display:inline-flex;align-items:center;gap:8px;-webkit-user-select:none;user-select:none}.lang-toggle-label{font-size:.75rem;font-weight:700;letter-spacing:.04em;color:var(--text-muted);transition:color .2s ease}.lang-toggle-label.active{color:var(--peach-600)}.lang-toggle-switch{position:relative;width:44px;height:24px;border-radius:999px;border:1px solid rgba(255,143,98,.45);background:#ffffff73;cursor:pointer;padding:0;transition:background .2s ease}.lang-toggle-switch.is-en{background:#ff8f6259}.lang-toggle-knob{position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;background:linear-gradient(135deg,var(--peach-400),var(--peach-500));box-shadow:0 2px 6px #2d1f1a33;transition:transform .2s ease}.lang-toggle-switch.is-en .lang-toggle-knob{transform:translate(20px)}.lang-toggle--on-dark .lang-toggle-label{color:#888}.lang-toggle--on-dark .lang-toggle-label.active{color:#f0d9b5}.lang-toggle--on-dark .lang-toggle-switch{background:#3e3b38;border-color:#5a564f}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;position:relative;z-index:1}.auth-container{width:100%;max-width:440px}.auth-brand{text-align:center;margin-bottom:32px}.auth-brand h1{font-size:2.8rem;background:linear-gradient(135deg,var(--peach-500) 0%,var(--sky-400) 55%,var(--coral) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:8px}.auth-brand p{color:var(--text-secondary);font-size:1.05rem}.auth-card{padding:36px;border-radius:var(--radius-xl)}.auth-tabs{display:flex;gap:8px;margin-bottom:28px;background:linear-gradient(135deg,#fff0e659,#dceefc4d);border-radius:var(--radius-md);padding:4px;border:1px solid var(--glass-border-soft)}.auth-tab{flex:1;padding:12px;border:none;background:transparent;border-radius:var(--radius-sm);font-family:var(--font-body);font-size:.95rem;font-weight:600;color:var(--text-muted);cursor:pointer;transition:all var(--transition)}.auth-tab.active{background:#ffffff80;color:var(--text-primary);box-shadow:0 2px 8px #ff70431a}.auth-form{display:none}.auth-form.active{display:block}.auth-form .btn-primary{margin-top:8px}.auth-error{color:var(--coral);font-size:.9rem;margin-top:12px;text-align:center;min-height:1.2em}.auth-success{color:var(--emerald);font-size:.9rem;margin-top:12px;text-align:center}.role-select{display:flex;gap:12px;margin-bottom:18px}.role-option{flex:1;padding:14px;border:1px solid var(--glass-border-soft);border-radius:var(--radius-md);background:var(--glass-gradient);text-align:center;cursor:pointer;transition:all var(--transition);font-size:.9rem;font-weight:500}.role-option:hover{border-color:#a8d4f08c;background:var(--glass-gradient-strong)}.role-option.selected{border-color:#ffb0888c;background:linear-gradient(135deg,#ffc8aa59,#b4dcf54d);font-weight:600}.role-option .role-icon{font-size:1.5rem;display:block;margin-bottom:4px}.role-select--three{flex-wrap:wrap}.role-select--three .role-option{flex:1 1 calc(33.333% - 8px);min-width:90px}.auth-hint{font-size:.8rem;color:var(--text-muted);margin:6px 0 0;line-height:1.35}.theme-toggle{border:1px solid var(--glass-border);background:var(--glass-bg-strong);border-radius:var(--radius-full);padding:4px;cursor:pointer;display:inline-flex;align-items:center;transition:background var(--transition)}.theme-toggle:hover{background:var(--glass-bg)}.theme-toggle__track{width:44px;height:26px;display:flex;align-items:center;justify-content:center}.theme-toggle__thumb{font-size:14px;line-height:1}.theme-toggle--on-dark{border-color:#fff3;background:#00000059}.notify-bell{position:relative;display:inline-flex;z-index:202}.notify-bell__btn{position:relative;border:1px solid var(--glass-border);background:var(--glass-gradient-strong);-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur));border-radius:var(--radius-sm);width:38px;height:38px;cursor:pointer;font-size:18px}.notify-bell__badge{position:absolute;top:-4px;right:-4px;background:var(--coral);color:#fff;font-size:10px;font-weight:700;min-width:16px;height:16px;border-radius:999px;display:flex;align-items:center;justify-content:center;padding:0 4px}.notify-bell__panel{position:fixed;width:min(320px,calc(100vw - 24px));border-radius:var(--radius-md);padding:12px;z-index:250000;box-shadow:var(--glass-shadow-lg)}.notify-bell__head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;font-size:14px}.notify-bell__mark{border:none;background:none;color:var(--peach-600);cursor:pointer;font-size:12px}.notify-bell__list{max-height:280px;overflow-y:auto;display:flex;flex-direction:column;gap:6px}.notify-bell__item{text-align:left;border:1px solid var(--glass-border-soft);background:var(--glass-bg);border-radius:var(--radius-sm);padding:8px 10px;cursor:pointer;display:flex;flex-direction:column;gap:2px;color:var(--text-primary)}.notify-bell__item.unread{border-color:#ffb0888c;background:linear-gradient(135deg,#ffdcc840,#c8e6fa33)}[data-theme=dark] .notify-bell__item.unread{background:linear-gradient(135deg,#ff8f621f,#7ec4e81a)}.notify-bell__item strong{font-size:13px}.notify-bell__item span{font-size:12px;color:var(--text-secondary)}.notify-bell__empty{font-size:13px;color:var(--text-muted);text-align:center;padding:16px 0}.lobby-container{position:relative;z-index:1;max-width:min(1400px,100%);margin:0 auto;padding:0 24px 48px;visibility:hidden}.lobby-header{display:flex;justify-content:space-between;align-items:center;padding:28px 0;position:relative;z-index:200}.logo-area{display:flex;align-items:center;gap:14px}.logo-area h1{font-size:2rem;background:linear-gradient(135deg,var(--peach-600) 0%,var(--coral) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.user-info{display:flex;align-items:center;gap:12px;padding:10px 20px;background:var(--glass-gradient-strong);-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:var(--radius-full);font-size:.95rem;position:relative;z-index:201;overflow:visible}.user-info strong{color:var(--peach-600)}#logout-btn{background:none;border:none;color:var(--text-muted);cursor:pointer;font-family:var(--font-body);font-size:.85rem;text-decoration:underline;transition:color var(--transition)}#logout-btn:hover{color:var(--coral)}.lobby-content{position:relative;z-index:1}.lobby-intro{margin-bottom:28px;padding:16px 20px;border-radius:var(--radius-lg);border:1px solid var(--glass-border);background:var(--glass-gradient-strong);-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur))}.lobby-welcome-pill{display:inline-flex;align-items:center;padding:3px 11px;border-radius:var(--radius-full);font-size:.68rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;background:linear-gradient(135deg,#ffb08833,#a8d4f02e);color:var(--peach-700);border:1px solid rgba(168,212,240,.4)}[data-theme=dark] .lobby-welcome-pill{color:#ffb89a}.lobby-intro__name{margin:8px 0 4px;font-family:var(--font-display);font-size:clamp(1.25rem,2.5vw,1.55rem);font-weight:800;letter-spacing:-.02em;background:linear-gradient(135deg,var(--peach-600),var(--sky-400));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.lobby-intro__sub{margin:0;font-size:.9rem}.lobby-content h2{font-size:1.75rem;margin-bottom:8px}.lobby-content>.subtitle{margin-bottom:32px}.menu-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px;margin-bottom:40px}.menu-card{display:flex;align-items:center;gap:18px;padding:24px;cursor:pointer;background:var(--glass-gradient);-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--glass-shadow);transition:transform var(--transition-bounce),box-shadow var(--transition);position:relative;z-index:1}.menu-card:hover{box-shadow:var(--glass-shadow-lg);background:var(--glass-gradient-strong);border-color:#ffb08873}.menu-card.primary{background:linear-gradient(135deg,#ffc8aa73,#b4dcf559);border-color:#ffb08873}.menu-card.primary:hover{border-color:#ff8f6299}.card-icon{font-size:2.2rem;width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:#ffffff59;border-radius:var(--radius-md);flex-shrink:0}.card-text h3{font-size:1.1rem;margin-bottom:4px}.card-text p{font-size:.85rem;color:var(--text-secondary)}.lobby-section h2{font-size:1.3rem;margin-bottom:16px}.study-card{min-height:80px}.lobby-link-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:14px 18px;margin-bottom:20px;border-radius:var(--radius-md);background:#ff9f431f;border:1px solid rgba(255,159,67,.35)}.lobby-link-banner p{margin:0;flex:1;min-width:200px}.streak-daily-card{position:relative;overflow:hidden;transition:all var(--transition-bounce)!important}.streak-urgent{background:linear-gradient(135deg,#ff9f4380,#ff6b6b73)!important;border-color:#ff8f6280!important;animation:pulse-streak 2s infinite}.streak-urgent h3,.streak-urgent p{color:var(--text-primary)!important}.streak-completed{background:#34d39933!important;border-color:#34d39966!important}.streak-broken{background:#2d1f1a26!important;border:2px dashed rgba(45,31,26,.2)!important;opacity:.85}.streak-broken .card-icon{filter:grayscale(1);animation:shake-broken 3s infinite}.streak-progress-mini{width:100%;height:6px;background:#ffffff4d;border-radius:3px;margin-top:8px}#streak-bar-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--peach-400),var(--coral));border-radius:3px;transition:width .5s ease}.streak-completed #streak-bar-fill{background:linear-gradient(90deg,var(--emerald),var(--mint))}.win-streak-badge{padding:2px 10px;border-radius:var(--radius-full);font-size:.85em}.streak-active{color:var(--peach-600);border:1px solid rgba(255,112,67,.4);background:#ff8f6226}.bot-modal-panel{max-width:480px;width:min(480px,94vw);text-align:left}#bot-game-overlay .modal-glass{max-width:480px;height:680px;display:flex;flex-direction:column;text-align:left;padding:24px}#bot-game-overlay .modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}#bot-game-overlay .modal-header h3{margin:0;font-size:1.2rem}#bot-game-overlay .close-btn{background:none;border:none;color:var(--coral);font-size:28px;cursor:pointer;line-height:1}#bot-game-iframe{flex:1;width:100%;border:none;border-radius:var(--radius-md);background:#ffffff1a}@keyframes pulse-streak{0%,to{transform:scale(1)}50%{transform:scale(1.02);box-shadow:0 0 30px #ff8f624d}}@keyframes shake-broken{0%,to{transform:rotate(0)}10%,30%,50%{transform:rotate(-5deg)}20%,40%,60%{transform:rotate(5deg)}}@media(max-width:600px){.menu-grid{grid-template-columns:1fr}.lobby-header{flex-direction:column;gap:16px;text-align:center}}.lobby-spotlight{margin-bottom:24px;padding:16px}.lobby-spotlight h3{margin:0 0 12px;font-size:1rem}.lobby-spotlight-inner{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-start}.lobby-leaders{flex:1;min-width:200px}.lobby-leader-row{display:flex;gap:10px;align-items:center;padding:6px 0;font-size:14px}.lobby-leader-rank{width:24px;height:24px;border-radius:50%;background:var(--peach-600, #e67e22);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}.lobby-live-board{flex:0 0 auto}.library-picker-list{max-height:280px;overflow-y:auto;margin-top:12px}.library-picker-item{display:block;width:100%;text-align:left;padding:10px;margin-bottom:6px;border:1px solid var(--glass-border);border-radius:var(--radius-sm);background:var(--glass-bg);cursor:pointer}.group-standings-table{width:100%;margin-top:8px;font-size:13px;border-collapse:collapse}.group-standings-table th,.group-standings-table td{padding:6px 8px;border-bottom:1px solid var(--glass-border-soft);text-align:left}.tournament-league-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;justify-content:center}.tournament-league-tabs button{padding:8px 16px;border-radius:var(--radius-full);border:1px solid var(--glass-border);background:var(--glass-bg);cursor:pointer;font-weight:600;font-size:13px}.tournament-league-tabs button.active{background:var(--peach-600, #e67e22);color:#fff;border-color:transparent}.tournament-card-tags span{font-size:10px;padding:2px 8px;border-radius:var(--radius-full);font-weight:700}.tag-league{background:#34d39933}.tag-team{background:#6366f133}.tag-demo{background:#ffb34740}.team-score-card{flex:1;text-align:center;padding:20px;border-radius:var(--radius-md);background:var(--glass-bg-strong)}.team-score-card.class{border:2px solid rgba(52,211,153,.4)}.team-score-card.teacher{border:2px solid rgba(99,102,241,.4)}.team-score-card strong{display:block;font-size:2rem;margin-top:8px}.team-score-vs{font-weight:800;opacity:.5}.profile-container{position:relative;z-index:1;max-width:min(1100px,100%);margin:0 auto;padding:20px 20px 56px;display:flex;flex-direction:column;gap:28px}.profile-hero{position:relative;overflow:hidden;border-radius:var(--radius-lg);border:1px solid var(--glass-border);background:var(--glass-gradient-strong);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}[data-theme=dark] .profile-hero{background:var(--glass-gradient-strong);border-color:var(--glass-border)}.profile-hero__glow{position:absolute;top:-40%;right:-5%;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(255,176,136,.28),rgba(126,196,232,.15) 55%,transparent 72%);pointer-events:none}.profile-hero__body{position:relative;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:18px 22px}.profile-hero__identity{display:flex;flex-direction:column;align-items:flex-start;gap:4px;min-width:0}.profile-hero__row{display:flex;align-items:flex-start;gap:14px}.profile-welcome-pill{display:inline-flex;align-items:center;gap:4px;padding:3px 11px;border-radius:var(--radius-full);font-size:.68rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;background:linear-gradient(135deg,#ffb08833,#a8d4f02e);color:var(--peach-700);border:1px solid rgba(255,176,136,.4)}[data-theme=dark] .profile-welcome-pill{color:#ffb89a;background:#ff8f621f}.profile-hero__name{margin:2px 0 0;font-family:var(--font-display);font-size:clamp(1.35rem,2.8vw,1.75rem);font-weight:800;line-height:1.15;letter-spacing:-.02em;background:linear-gradient(135deg,var(--peach-600),var(--coral));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.profile-hero__nick{margin:0;font-size:.82rem;color:var(--text-muted)}.profile-hero__chips{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.profile-role-pill{padding:5px 12px;border-radius:var(--radius-full);font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;background:#ffffff59;border:1px solid var(--glass-border-soft);color:var(--text-secondary)}.profile-rating-pill{padding:5px 14px;border-radius:var(--radius-full);font-size:.9rem;font-weight:800;background:linear-gradient(135deg,var(--peach-400),var(--peach-500));color:#fff;box-shadow:0 4px 14px #ff704340}.profile-hero--chess{overflow:hidden}.profile-hero__pieces{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;overflow:hidden}.profile-hero__float-piece{position:absolute;font-size:clamp(1.2rem,2.5vw,2rem);opacity:.12;animation:profile-piece-float 8s ease-in-out infinite}.profile-hero__float-piece--0{top:8%;left:4%;animation-delay:0s}.profile-hero__float-piece--1{top:18%;right:8%;animation-delay:.6s}.profile-hero__float-piece--2{bottom:20%;left:12%;animation-delay:1.2s}.profile-hero__float-piece--3{top:42%;right:18%;animation-delay:.3s}.profile-hero__float-piece--4{bottom:8%;right:6%;animation-delay:1.8s}.profile-hero__float-piece--5{top:62%;left:28%;animation-delay:.9s}.profile-hero__float-piece--6{top:10%;left:55%;animation-delay:2.1s;opacity:.08}.profile-hero__float-piece--7{bottom:30%;right:35%;animation-delay:1.5s;opacity:.1}.profile-hero__float-piece--8{top:72%;right:12%;animation-delay:.4s;opacity:.09}.profile-hero__float-piece--9{top:35%;left:2%;animation-delay:2.4s;opacity:.11}@keyframes profile-piece-float{0%,to{transform:translateY(0) rotate(0)}50%{transform:translateY(-6px) rotate(4deg)}}.profile-hero__board-strip{position:absolute;right:0;bottom:0;width:min(180px,42%);opacity:.35;pointer-events:none}.profile-mini-board{display:grid;grid-template-columns:repeat(8,1fr);aspect-ratio:2 / 1;border-radius:4px 0 0;overflow:hidden;border:1px solid rgba(0,0,0,.08)}.profile-mini-board__cell--light{background:#f0d9b5}.profile-mini-board__cell--dark{background:#b58863}[data-theme=dark] .profile-mini-board__cell--light{background:#769656}[data-theme=dark] .profile-mini-board__cell--dark{background:#486030}.profile-hero__avatar-wrap{position:relative;flex-shrink:0}.profile-hero__piece-ring{position:absolute;top:-10px;right:-8px;z-index:2;width:28px;height:28px;display:grid;place-items:center;border-radius:50%;font-size:1rem;background:linear-gradient(135deg,var(--peach-400),var(--sky-400));color:#fff;box-shadow:0 4px 12px #ff704359}.profile-hero__avatar{position:relative;z-index:1}.profile-hero__motto{margin:8px 0 0;font-size:.82rem;font-style:italic;color:var(--text-secondary);max-width:28rem}.profile-hero__motto-piece{margin-right:6px;opacity:.85}.profile-hero__side{display:flex;flex-direction:column;align-items:flex-end;gap:10px}.profile-rating-pill--all{display:inline-flex;align-items:center;gap:6px}.profile-rating-pill__piece{font-size:.85rem;opacity:.9}.profile-hero-chip{padding:4px 10px;border-radius:var(--radius-full);font-size:.72rem;font-weight:700;background:#ffffff59;border:1px solid var(--glass-border-soft)}.profile-hero-chip--level{background:#7ec4e833;color:var(--sky-700, #1565c0)}.profile-hero-chip--puzzle{background:#2ed57326}.profile-hero-chip--fire{background:#ff47571f}.profile-hero__record{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.profile-hero__record-item{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:var(--radius-sm);font-size:.78rem;font-weight:700;background:#ffffff40;border:1px solid var(--glass-border-soft)}.profile-hero__record-item--win span{color:#2ed573}.profile-hero__record-item--draw span{color:#ff9f43}.profile-hero__record-item--loss span{color:#ff4757}.profile-section__piece{display:inline-block;margin-right:8px;font-size:1rem;opacity:.85;vertical-align:middle}.profile-chess-tip{background:linear-gradient(135deg,#fff0e666,#dceefc59);border-style:dashed}.profile-chess-tip__head{display:flex;align-items:center;gap:10px;margin-bottom:8px}.profile-chess-tip__head h3{margin:0;font-size:.95rem}.profile-chess-tip__piece{font-size:1.25rem}.profile-chess-tip__text{margin:0;font-size:.92rem;line-height:1.45;color:var(--text-secondary)}.profile-corner-badge{position:absolute;top:10px;right:12px;display:inline-flex;align-items:center;gap:4px;font-size:.72rem;color:var(--text-muted)}.profile-corner-badge__piece{font-size:1.1rem}.profile-dash-card--chess,.profile-block--chess{position:relative;overflow:hidden}.profile-piece-progress{margin-top:12px}.profile-piece-progress__track{display:flex;gap:6px}.profile-piece-progress__step{font-size:1rem;opacity:.25;filter:grayscale(.6);transition:opacity .2s,filter .2s,transform .2s}.profile-piece-progress__step--on{opacity:1;filter:none;transform:translateY(-2px)}.profile-piece-progress__caption{margin-top:6px}.profile-class-pieces{display:flex;flex-wrap:wrap;gap:4px;align-items:center;margin:8px 0 10px}.profile-class-pieces__p{font-size:1.1rem;line-height:1}.profile-class-pieces__p--dark{opacity:.55}.profile-section{display:flex;flex-direction:column;gap:12px}.profile-section__title{margin:0;padding:0 4px;font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--text-muted)}.profile-section__grid{display:grid;grid-template-columns:repeat(12,1fr);gap:14px;align-items:stretch}.profile-block{padding:18px 20px;background:var(--glass-gradient);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--glass-border-soft);border-radius:var(--radius-lg);min-width:0}.profile-block h3{font-size:.95rem;margin:0 0 12px;font-family:var(--font-display)}.profile-block__subtitle{font-size:.95rem;margin:0 0 4px;font-family:var(--font-display)}.profile-block--full{grid-column:span 12}.profile-block--wide{grid-column:span 8}.profile-block--half{grid-column:span 6}.profile-block--third{grid-column:span 4}.profile-block--link{display:flex;flex-direction:column;gap:14px}.profile-block--actions{display:flex;justify-content:flex-end;padding:8px 0 0;background:transparent;border:none;-webkit-backdrop-filter:none;backdrop-filter:none}.profile-block__toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}.profile-block__toolbar h3{margin:0}.stats-grid{display:grid;grid-template-columns:1fr;gap:10px;margin:0}.stats-grid--row{grid-template-columns:repeat(3,1fr)}.stat-card{text-align:center;padding:14px 10px;background:#fff3;border:1px solid var(--glass-border-soft);border-radius:var(--radius-md);transition:transform var(--transition)}.stat-card:hover{box-shadow:var(--glass-shadow)}.stat-value{display:block;font-family:var(--font-display);font-size:1.65rem;font-weight:800;color:var(--peach-600);line-height:1;margin-bottom:4px}.stat-label{font-size:.7rem;color:var(--text-secondary);font-weight:600;text-transform:uppercase;letter-spacing:.04em}.progress-container{width:100%;height:12px;background:#ffffff4d;border-radius:var(--radius-full);overflow:hidden;margin:8px 0}#progress-fill-bar{height:100%;background:linear-gradient(90deg,var(--peach-400),var(--coral));border-radius:var(--radius-full);transition:width .6s ease}.trophy-shelf{display:flex;flex-wrap:wrap;gap:10px}.trophy-shelf .trophy-chip{width:46px;height:46px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:22px;border:2px solid rgba(0,0,0,.12);box-shadow:0 4px 12px #0000001f;cursor:help}.history-table{width:100%}.history-table 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var(--transition),background var(--transition)}#playerlist li.is-me{background:#ff70431f;border-color:#ff704359}#playerlist li:hover{border-color:var(--glass-border)}.player-avatar{width:28px;height:28px;border-radius:50%;background:linear-gradient(135deg,var(--peach-400),var(--coral));color:#fff;font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0}.player-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.player-you-badge{font-size:10px;font-weight:800;padding:2px 8px;border-radius:var(--radius-full);background:#ff704333;color:var(--peach-700);flex-shrink:0}.tournament-main{flex:1;padding:28px 32px;overflow-x:auto}.section-box{position:relative;padding:24px 28px;margin-bottom:24px;background:var(--glass-bg);-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:var(--radius-xl);box-shadow:var(--glass-shadow);overflow:hidden}.section-box:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--peach-500),var(--coral),var(--amber));opacity:.7}.section-box h2{font-size:1.1rem;margin-bottom:18px;font-family:var(--font-display);font-weight:700}#standingstable tr.rank-gold td{background:#ffd70014}#standingstable tr.rank-silver td{background:#c0c0c01a}#standingstable tr.rank-bronze td{background:#cd7f3214}#standingstable tr.rank-gold .col-rank,#standingstable tr.rank-silver .col-rank,#standingstable tr.rank-bronze .col-rank{font-size:1.1rem}.join-link{display:inline-block;padding:6px 16px;background:linear-gradient(135deg,var(--peach-400),var(--peach-500));color:#fff!important;border-radius:var(--radius-full);font-weight:700;font-size:.8rem;transition:transform var(--transition),box-shadow var(--transition);box-shadow:0 4px 14px #ff70434d}.join-link:hover{transform:translateY(-1px) scale(1.03);color:#fff!important;box-shadow:0 6px 20px #ff704366}.col-rank{width:48px;text-align:center}.col-stat{text-align:center}.tournament-list-page{max-width:min(1400px,100%);margin:0 auto;padding-bottom:60px}.tournament-list-hero{margin-bottom:8px}.tournament-stats-bar{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:0 0 24px}.tournament-stat{text-align:center;padding:16px 12px;border-radius:var(--radius-lg);background:var(--glass-bg);border:1px solid var(--glass-border-soft);-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur))}.tournament-stat--live{border-color:#ff6b6b59;background:linear-gradient(160deg,rgba(255,107,107,.12),var(--glass-bg))}.tournament-stat__value{display:block;font-size:1.75rem;font-weight:800;font-family:var(--font-display);line-height:1;color:var(--peach-600)}.tournament-stat--live .tournament-stat__value{color:var(--coral)}.tournament-stat__label{display:block;margin-top:6px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted)}.tournament-league-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;justify-content:center;padding:6px;border-radius:var(--radius-full);background:#ffffff1f;border:1px solid var(--glass-border-soft);width:fit-content;margin-left:auto;margin-right:auto}.tournament-league-tabs button{padding:8px 18px;border-radius:var(--radius-full);border:1px solid transparent;background:transparent;cursor:pointer;font-weight:600;font-size:13px;color:var(--text-secondary);transition:all var(--transition)}.tournament-league-tabs button:hover{color:var(--text-primary);background:#fff3}.tournament-league-tabs button.active{background:linear-gradient(135deg,var(--peach-500),var(--peach-600));color:#fff;border-color:transparent;box-shadow:0 4px 16px #ff704359}.tournament-schedule-grid{display:grid;grid-template-columns:1fr;gap:14px}@media(min-width:720px){.tournament-schedule-grid{grid-template-columns:repeat(2,1fr)}}.tournament-schedule-card{padding:0;cursor:pointer;transition:transform .2s var(--transition),box-shadow .2s;overflow:hidden}.tournament-schedule-card:hover{box-shadow:var(--glass-shadow-lg);border-color:#ffb08859}.tournament-schedule-card__inner{padding:18px 18px 16px;border-left:4px solid var(--glass-border)}.tournament-schedule-card.status-running .tournament-schedule-card__inner{border-left-color:var(--coral)}.tournament-schedule-card.status-registration .tournament-schedule-card__inner,.tournament-schedule-card.status-scheduled .tournament-schedule-card__inner{border-left-color:var(--amber)}.tournament-schedule-card.status-finished .tournament-schedule-card__inner{border-left-color:var(--emerald);opacity:.88}.tournament-schedule-card__head{display:flex;justify-content:space-between;align-items:flex-start;gap:10px;margin-bottom:10px}.tournament-schedule-card__head h3{margin:0;font-size:1rem;line-height:1.35;font-family:var(--font-display);font-weight:700;flex:1}.tournament-schedule-card__foot{display:flex;justify-content:flex-end;margin-top:14px;padding-top:12px;border-top:1px solid var(--glass-border-soft)}.tournament-schedule-desc{margin:0 0 12px;font-size:12px;line-height:1.5;color:var(--text-secondary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.tournament-schedule-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}.tournament-meta-chip{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:600;padding:4px 10px;border-radius:var(--radius-full);background:#ffffff40;border:1px solid var(--glass-border-soft);color:var(--text-secondary)}.tournament-meta-chip__icon{font-size:12px;line-height:1}.tournament-fill-bar{display:flex;align-items:center;gap:10px;margin-top:4px}.tournament-fill-bar__track{flex:1;height:5px;border-radius:var(--radius-full);background:#fff3;overflow:hidden}.tournament-fill-bar__fill{height:100%;border-radius:var(--radius-full);background:linear-gradient(90deg,var(--peach-400),var(--peach-600));transition:width .4s ease}.tournament-fill-bar__label{font-size:10px;font-weight:700;color:var(--text-muted);min-width:28px;text-align:right}.tournament-schedule-enter{min-width:110px;text-align:center}.tournament-card-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}.tournament-card-tags span{font-size:10px;padding:3px 9px;border-radius:var(--radius-full);font-weight:700;letter-spacing:.03em}.tag-league{background:#34d39933;color:#047857;border:1px solid rgba(52,211,153,.3)}.tag-league--novice{background:#6366f126;color:#4338ca;border-color:#6366f14d}.tag-league--advanced{background:#ff6b6b26;color:#b91c1c;border-color:#ff6b6b4d}.tag-league--open{background:#ffb34733;color:#b45309;border-color:#ffb34759}.tag-format{background:#a8d4f038;color:#0369a1;border:1px solid rgba(168,212,240,.4);font-size:10px;font-weight:700;padding:3px 8px;border-radius:var(--radius-full);letter-spacing:.03em}.tag-team{background:#6366f133;color:#4338ca;border:1px solid rgba(99,102,241,.3)}.tag-demo{background:#ffb34740;color:#b45309;border:1px solid rgba(255,179,71,.4)}.tournament-live-dot{width:6px;height:6px;border-radius:50%;background:var(--coral);animation:live-pulse 1.4s ease-in-out infinite}@keyframes live-pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(.85)}}.tournament-empty-state{text-align:center;padding:48px 24px}.tournament-empty-state__icon{display:block;font-size:2.5rem;margin-bottom:12px;opacity:.5}.tournament-list-error{text-align:center;padding:24px;color:var(--coral)}.tournament-schedule-card--skeleton{min-height:180px;cursor:default;animation:skeleton-shimmer 1.4s ease-in-out infinite;background:linear-gradient(110deg,var(--glass-bg) 30%,rgba(255,255,255,.35) 50%,var(--glass-bg) 70%);background-size:200% 100%}.tournament-schedule-card--skeleton:hover{transform:none}@keyframes skeleton-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.tournament-suggestions-list{margin:8px 0 0;padding-left:20px;font-size:14px;line-height:1.6;color:var(--text-secondary)}.team-scores-grid{display:flex;align-items:center;justify-content:center;gap:20px}.team-score-card{flex:1;text-align:center;padding:24px 20px;border-radius:var(--radius-lg);background:var(--glass-bg-strong);transition:transform var(--transition)}.team-score-card:hover{box-shadow:var(--glass-shadow)}.team-score-card.class{border:2px solid rgba(52,211,153,.45)}.team-score-card.teacher{border:2px solid rgba(99,102,241,.45)}.team-score-card strong{display:block;font-size:2.25rem;margin-top:8px;font-family:var(--font-display);background:linear-gradient(135deg,var(--peach-500),var(--coral));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.team-score-vs{font-weight:800;font-size:1.1rem;opacity:.45;font-family:var(--font-display)}.tournament-countdown{margin-left:6px;font-weight:700;color:var(--coral)}.lobby-badges-strip{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:12px 0 20px}.lobby-badge-chip{font-size:11px;font-weight:700;padding:4px 10px;border-radius:var(--radius-full);background:#ffb34733;border:1px solid rgba(255,179,71,.35)}.journal-weak-topics{padding:16px;margin-bottom:16px}.weak-topics-list{list-style:none;display:flex;flex-direction:column;gap:8px}.weak-topics-list li{display:flex;align-items:center;justify-content:space-between;gap:12px}.journal-parent-link{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}.parent-portal .parent-child-card{padding:20px;margin-bottom:20px}.parent-user-bar{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;margin-bottom:20px}.parent-list{list-style:none;font-size:14px}.parent-block{margin-top:16px}.group-poll-panel{padding:16px;margin-bottom:16px}.group-poll-votes{list-style:none;margin:10px 0}.group-teacher-tools{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}.puzzle-theme-banner{text-align:center;margin-bottom:12px}@media(max-width:900px){.tournament-page{flex-direction:column}.tournament-sidebar{width:100%;min-height:auto;border-right:none;border-bottom:1px solid var(--glass-border)}.tournament-main{padding:20px 16px}.tournament-stats-bar{grid-template-columns:repeat(3,1fr);gap:8px}.tournament-stat{padding:12px 8px}.tournament-stat__value{font-size:1.4rem}}@media(max-width:480px){.tournament-schedule-grid{grid-template-columns:1fr}.tournament-league-tabs{width:100%;border-radius:var(--radius-lg);justify-content:stretch}.tournament-league-tabs button{flex:1;padding:8px 10px;font-size:12px}}.game-hud{text-align:center;margin:28px 0 24px;position:relative}.game-hud__badge{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;padding:4px 14px;border-radius:var(--radius-full);background:linear-gradient(135deg,#ff704340,#ff6b6b33);border:1px solid rgba(255,143,98,.45);color:var(--peach-600);margin-bottom:10px;box-shadow:0 0 20px #ff704326}.game-hud h1{font-size:clamp(1.6rem,4vw,2.2rem);margin:0 0 8px;background:linear-gradient(135deg,var(--peach-500) 0%,var(--coral) 50%,var(--amber) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;filter:drop-shadow(0 2px 8px rgba(255,112,67,.25))}.game-hud__sub{color:var(--text-secondary);font-size:.95rem;max-width:480px;margin:0 auto}.game-panel{position:relative;border-radius:var(--radius-lg);border:1px solid rgba(255,143,98,.35);background:linear-gradient(160deg,var(--glass-bg-strong) 0%,var(--glass-bg) 100%);box-shadow:var(--glass-shadow-lg),inset 0 1px #ffffff40,0 0 0 1px #ff704314;overflow:hidden}.game-panel:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--peach-500),var(--coral),var(--amber));opacity:.85}.game-panel__head{display:flex;align-items:center;gap:10px;padding:14px 18px;border-bottom:1px solid var(--glass-border-soft);font-family:var(--font-display);font-weight:700;font-size:.95rem}.game-panel__head-icon{font-size:1.25rem;filter:drop-shadow(0 2px 4px rgba(0,0,0,.15))}.game-quest-card{position:relative;text-align:left;border:1px solid var(--glass-border-soft);border-radius:var(--radius-md);padding:14px 14px 14px 18px;background:var(--glass-bg);cursor:pointer;display:flex;flex-direction:column;gap:6px;color:var(--text-primary);transition:transform var(--transition-bounce),box-shadow var(--transition),border-color var(--transition);overflow:hidden}.game-quest-card:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:linear-gradient(180deg,var(--peach-400),var(--peach-600));border-radius:4px 0 0 4px}.game-quest-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #ff70432e;border-color:#ff8f6266}.game-quest-card.active{border-color:var(--peach-500);box-shadow:0 0 0 2px #ff704340,0 12px 28px #ff704333;transform:translateY(-1px)}.game-quest-card.status-completed:before{background:linear-gradient(180deg,var(--emerald),#059669)}.game-quest-card.status-late:before{background:linear-gradient(180deg,var(--coral),#dc2626)}.game-quest-card__title{font-family:var(--font-display);font-weight:700;font-size:.95rem}.game-quest-card__meta{font-size:12px;color:var(--text-muted)}.game-status-pill{display:inline-flex;align-items:center;gap:4px;font-size:10px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;padding:3px 10px;border-radius:var(--radius-full);width:fit-content}.game-status-pill--pending{background:#ffb34733;color:#b45309;border:1px solid rgba(255,179,71,.4)}.game-status-pill--completed{background:#34d39933;color:#047857;border:1px solid rgba(52,211,153,.4)}.game-status-pill--active{background:#ff6b6b33;color:#b91c1c;border:1px solid rgba(255,107,107,.45);animation:pill-glow 2s ease-in-out infinite}.game-status-pill--scheduled{background:#6366f126;color:#4338ca;border:1px solid rgba(99,102,241,.35)}@keyframes pill-glow{0%,to{box-shadow:0 0 #ff6b6b00}50%{box-shadow:0 0 12px #ff6b6b59}}.game-status-pill--late{background:#ff6b6b33;color:#b91c1c;border:1px solid rgba(255,107,107,.4)}.game-xp-bar{height:8px;background:#00000014;border-radius:var(--radius-full);overflow:hidden;margin:16px 0 8px;border:1px solid rgba(255,143,98,.2)}.game-xp-bar__fill{height:100%;background:linear-gradient(90deg,var(--peach-400),var(--amber),var(--emerald));border-radius:var(--radius-full);transition:width .4s cubic-bezier(.4,0,.2,1);box-shadow:0 0 12px #ffb34780}.game-xp-label{font-size:11px;font-weight:700;color:var(--text-muted);letter-spacing:.05em}.onboarding-game{text-align:center;padding:8px 4px 4px}.onboarding-game__icon{font-size:56px;line-height:1;margin-bottom:12px;filter:drop-shadow(0 4px 12px rgba(255,112,67,.35));animation:onboarding-pop .5s cubic-bezier(.175,.885,.32,1.275)}@keyframes onboarding-pop{0%{transform:scale(.6);opacity:0}to{transform:scale(1);opacity:1}}.onboarding-game h2{font-size:1.25rem;margin-bottom:8px;line-height:1.35}.onboarding-game__step{font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--peach-600);margin-bottom:4px}.onboarding-game .game-xp-bar{max-width:280px;margin-left:auto;margin-right:auto}.onboarding-dots{display:flex;gap:8px;justify-content:center;margin:12px 0 20px}.onboarding-dots span{width:10px;height:10px;border-radius:50%;background:#0000001f;transition:all var(--transition)}.onboarding-dots span.active{background:linear-gradient(135deg,var(--peach-400),var(--peach-600));box-shadow:0 0 10px #ff704380;transform:scale(1.15)}.onboarding-dots span.done{background:var(--emerald)}.btn-game{font-family:var(--font-display);font-weight:700;letter-spacing:.04em;text-transform:uppercase;font-size:.85rem;padding:14px 24px;border:none;border-radius:var(--radius-md);cursor:pointer;background:linear-gradient(135deg,var(--peach-400) 0%,var(--peach-600) 100%);color:#fff;box-shadow:0 4px 0 var(--peach-700),0 8px 20px #ff704359;transition:transform .1s,box-shadow .1s;width:100%}.btn-game:hover{transform:translateY(-1px);box-shadow:0 5px 0 var(--peach-700),0 10px 24px #ff704366}.btn-game:active{transform:translateY(2px);box-shadow:0 2px 0 var(--peach-700),0 4px 12px #ff70434d}.menu-card.game-feature-card{border:1px solid rgba(255,143,98,.35);background:linear-gradient(145deg,rgba(255,143,98,.12) 0%,var(--glass-bg) 60%);position:relative;overflow:hidden}.menu-card.game-feature-card:after{content:"NEW";position:absolute;top:12px;right:12px;background:linear-gradient(135deg,var(--coral),var(--peach-600));color:#fff;font-size:.58rem;font-weight:800;letter-spacing:.08em;padding:3px 8px;border-radius:var(--radius-full);transform:none;box-shadow:0 2px 8px #ff6b6b59;pointer-events:none;z-index:2}.menu-card.game-feature-card--journal:after{content:"PRO"}.menu-card.game-feature-card .card-icon{font-size:2.2rem;filter:drop-shadow(0 3px 8px rgba(255,112,67,.3))}.menu-card.game-feature-card:hover{border-color:var(--peach-400);box-shadow:0 12px 32px #ff704338}.notify-bell__btn{border-radius:var(--radius-sm);border:1px solid rgba(255,143,98,.35);background:linear-gradient(145deg,var(--glass-bg-strong),var(--glass-bg));transition:transform var(--transition),box-shadow var(--transition)}.notify-bell__btn:hover{transform:scale(1.05);box-shadow:0 0 16px #ff704340}.notify-bell__panel{border:1px solid rgba(255,143,98,.3);background:linear-gradient(160deg,var(--glass-bg-strong),var(--glass-bg))}.notify-bell__panel:before{content:"";display:block;height:3px;margin:-12px -12px 10px;background:linear-gradient(90deg,var(--peach-500),var(--coral));border-radius:var(--radius-md) var(--radius-md) 0 0}.journal-page .journal-layout.game-panel{padding:0}.journal-page .journal-layout.game-panel>*{padding:20px}.journal-tabs button.active{box-shadow:0 4px 16px #ff704359;font-family:var(--font-display)}.journal-cal-cell.has-entry{box-shadow:inset 0 0 0 2px #34d39980}.journal-entry-card{border-left:3px solid var(--peach-500);transition:transform var(--transition)}.journal-entry-card:hover{transform:translate(4px)}.homework-arena{padding:0}.homework-arena__body{padding:20px}.homework-arena__complete{display:block;width:100%;max-width:320px;margin:20px auto 0}[data-theme=dark] .game-xp-bar{background:#ffffff14}[data-theme=dark] .onboarding-dots span{background:#ffffff26}[data-theme=dark] .game-quest-card{background:#0003}.tournament-game-page{position:relative;z-index:1;min-height:100vh;padding:24px}.tournament-game-layout{display:flex;gap:28px;max-width:1100px;margin:0 auto}.player-panel{display:flex;justify-content:space-between;align-items:center;width:100%;max-width:500px;padding:14px 20px;margin-bottom:8px;background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:var(--radius-md)}.player-name{font-weight:600;font-size:.95rem}.timer{font-family:var(--font-display);font-size:1.4rem;font-weight:800;color:var(--text-primary);padding:4px 12px;background:#ffffff40;border-radius:var(--radius-sm)}.timer.active-timer{color:var(--peach-600);background:#ff8f6233;animation:timer-pulse 1s infinite}.waiting-turn{text-align:center;margin-top:12px;padding:10px;font-weight:700;font-size:.9rem;color:var(--peach-600)}.waiting-turn.active-turn{background:#ff8f6226;border-radius:var(--radius-full)}.win{color:var(--emerald)}.loss{color:var(--coral)}#promotion-modal{background:var(--glass-bg-strong)!important;-webkit-backdrop-filter:blur(var(--glass-blur-lg))!important;backdrop-filter:blur(var(--glass-blur-lg))!important;border:1px solid var(--glass-border)!important;border-radius:var(--radius-lg)!important}#promotion-modal h3{color:var(--text-primary)!important;font-family:var(--font-display)!important}.promo-choice{width:60px!important;height:60px!important;font-size:36px!important;background:#fff6!important;border:1px solid var(--glass-border)!important;border-radius:var(--radius-sm)!important;cursor:pointer;transition:transform var(--transition)}.promo-choice:hover{transform:scale(1.1);background:#fff9!important}@keyframes timer-pulse{0%,to{opacity:1}50%{opacity:.7}}@media(max-width:900px){.tournament-game-layout{flex-direction:column}}.admin-page{position:relative;z-index:1;padding:32px 24px 48px;max-width:1100px;margin:0 auto}.admin-container{padding:32px;border-radius:var(--radius-xl)}.admin-container header{display:flex;justify-content:space-between;align-items:center;margin-bottom:28px;padding-bottom:20px;border-bottom:1px solid var(--glass-border-soft)}.admin-container h1{font-size:1.6rem;background:linear-gradient(135deg,var(--coral),var(--peach-600));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.admin-controls{display:flex;align-items:center;gap:12px;padding:16px 20px;margin-bottom:20px;background:#ffffff26;border-radius:var(--radius-md);border:1px solid var(--glass-border-soft)}.btn-action{padding:6px 14px;border:none;border-radius:var(--radius-sm);cursor:pointer;font-size:.8rem;font-weight:600;font-family:var(--font-body);margin-right:4px;transition:all var(--transition)}.btn-reset{background:#ffb3474d;color:#b45309;border:1px solid rgba(255,179,71,.4)}.btn-reset:hover{background:#ffb34780}.btn-delete{background:#ff6b6b33;color:#dc2626;border:1px solid rgba(255,107,107,.3)}.btn-delete:hover{background:#ff6b6b59}.admin-table-wrap{background:#ffffff1a;border-radius:var(--radius-lg);border:1px solid var(--glass-border-soft);overflow:hidden}.study-video-room{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:14px}.study-video-room--sidebar{flex-shrink:0;padding:0;border:none;background:transparent;border-radius:0}.study-video-room--bar{width:100%;max-width:100%;min-width:0;box-sizing:border-box}.study-video-bar{display:flex;align-items:stretch;gap:10px;width:100%;min-width:0}.study-video-controls-col{display:flex;flex-direction:column;gap:8px;flex-shrink:0;justify-content:center}.study-video-toggle{flex-shrink:0;width:46px;height:46px;border:1px solid rgba(255,255,255,.22);border-radius:12px;background:linear-gradient(165deg,#ffffff38,#ffffff14);box-shadow:0 2px 8px #2d1f1a1f;cursor:pointer;font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;transition:transform .15s ease,background .15s ease,border-color .15s ease,box-shadow .15s ease}.study-video-toggle:hover{transform:translateY(-1px);background:linear-gradient(165deg,#ff8f6259,#ff8f6226);border-color:#ff8f628c;box-shadow:0 4px 12px #ff8f6233}.study-video-toggle:active{transform:translateY(0)}.study-video-toggle--on{background:linear-gradient(165deg,#e74c3c47,#e74c3c1f);border-color:#e74c3c73}.study-video-toggle--mute-off{opacity:.92}.study-video-toggle--muted{background:linear-gradient(165deg,#e74c3c47,#e74c3c1f);border-color:#e74c3c73}.study-video-room--bar .study-video-bar{flex:1;min-width:0}.study-video-room--inline{margin-bottom:16px}.study-video-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-size:13px;font-weight:700}.study-video-error{color:#e74c3c;font-size:11px;margin:0 0 4px}.study-video-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;flex:1;min-width:0}.study-video-head-actions{display:flex;gap:8px;align-items:center}.study-video-room--sidebar .study-video-grid{grid-template-columns:1fr;gap:10px;min-width:0}.study-video-room--sidebar .study-video-tile{width:100%;aspect-ratio:16 / 10;min-height:150px;max-height:240px}.study-video-room--group .study-video-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}.study-video-room--group .study-video-tile{min-height:140px;aspect-ratio:4/3}.study-video-tile{position:relative;background:#0d0d0d;border-radius:var(--radius-sm);overflow:hidden;aspect-ratio:4/3;border:1px solid rgba(255,255,255,.08)}.study-video-tile video{width:100%;height:100%;object-fit:cover;display:block}.study-video-tile span,.study-video-tile-label{position:absolute;bottom:0;left:0;right:0;z-index:2;padding:8px 10px;font-size:12px;font-weight:600;background:linear-gradient(transparent,#000000d9);color:#fff;pointer-events:none}.study-video-room--sidebar .study-video-tile span{padding:4px 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.lobby-header{display:flex;justify-content:space-between;align-items:center;padding:16px 24px 16px 58px;margin-bottom:12px;flex-shrink:0;width:100%;max-width:min(1800px,100%);box-sizing:border-box;background:var(--glass-bg);-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:var(--radius-lg);max-width:1600px;margin-left:auto;margin-right:auto}.study-page .logo-area h1{font-size:1.4rem;background:linear-gradient(135deg,var(--peach-600),var(--coral));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.study-page .user-badge-text{padding:8px 16px;background:#ffffff40;border-radius:var(--radius-full);font-size:.9rem}.main-layout{display:flex;gap:20px;max-width:min(1800px,100%);margin:0 auto;width:100%;height:calc(100vh - 100px)}.study-studio{display:grid;grid-template-columns:80px minmax(0,1fr) 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#111}.study-hist-move:disabled{cursor:default}.study-hist-ellipsis{font-size:11px;font-weight:600;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;color:var(--text-muted);padding:1px 2px}.study-history-empty{font-size:11px;color:var(--text-muted)}.study-side-rail .history-move{padding:5px 8px;font-size:12px}.study-side-rail .history-toolbar{margin-bottom:4px;min-height:28px;flex-shrink:0}.tabs-sidebar{width:80px;display:flex;flex-direction:column;gap:15px;align-items:center;padding-top:10px}#tabs-list{display:flex;flex-direction:column;gap:12px;width:100%;align-items:center}.tab-item{width:60px;height:60px;flex-shrink:0;background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--glass-border-soft);border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;cursor:pointer;font-size:10px;transition:var(--transition);color:var(--text-secondary)}.tab-icon-wrapper{font-size:18px;line-height:1}.tab-label{font-size:9px;line-height:1;font-weight:600;text-align:center}.tab-item i{font-size:20px;margin-bottom:3px}.tab-item.active{background:linear-gradient(135deg,var(--peach-400),var(--peach-500));color:#fff;transform:scale(1.05);border-color:transparent}.tab-item.active i,.tab-item.active span{color:#fff}.add-tab-btn{width:55px;height:55px;border:2px dashed 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460px),1024px);margin-top:15px}.info-panel{width:100%;padding:20px;background:var(--glass-bg);-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur));border:1px solid var(--glass-border);border-radius:var(--radius-xl);display:flex;flex-direction:column;gap:15px}.chat-area{background:#ffffff26;border-radius:var(--radius-md);padding:12px;flex-grow:1;overflow-y:auto;border:1px solid var(--glass-border-soft);min-height:200px}.history-toolbar{display:flex;align-items:center;margin-bottom:8px;min-height:32px}.history-reset-btn{width:36px;height:32px;border:1px solid var(--glass-border-soft);border-radius:var(--radius-sm);background:#ffffff59;cursor:pointer;font-size:14px;line-height:1;color:var(--text-primary);transition:var(--transition)}.history-reset-btn:hover{background:#ff8f624d;border-color:#ff8f6280}.history-list{display:flex;flex-direction:column;gap:6px}.pgn-container{display:flex;flex-wrap:wrap;gap:5px;padding:5px}.pgn-move,.history-move{cursor:pointer;padding:6px 10px;background:#ffffff40;border-radius:6px;font-weight:600;font-size:13px;transition:var(--transition);color:var(--text-primary);border:1px solid 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var(--glass-border-soft)}.btn-logout:hover{background:#ff6b6b26;color:var(--coral)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#2d1f1a73;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:none;justify-content:center;align-items:center;z-index:10000}.study-editor-modal{max-width:720px;width:min(720px,94vw);text-align:left}.study-lib-modal{max-width:640px;width:min(640px,94vw);text-align:left}.editor-layout{display:flex;gap:20px;align-items:flex-start;flex-wrap:wrap}.editor-tools{display:flex;flex-direction:column;gap:10px;flex:1;min-width:180px}.piece-palette{display:grid;grid-template-columns:repeat(6,1fr);gap:6px}.palette-piece{font-size:1.6rem;line-height:1;padding:8px 4px;border-radius:var(--radius-sm);border:1px solid var(--glass-border-soft);background:#fff;cursor:pointer}.palette-piece.active{border-color:var(--peach-500);background:#ff8f6240;box-shadow:0 0 0 2px #ff8f6259}.btn-primary-sm{padding:10px 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10}.study-video-rail-slot .study-video-room--sidebar .study-video-tile span{padding:4px 8px;font-size:11px}.study-side-rail .chat-area.study-history-list{flex:0 0 auto;max-height:72px;padding:6px 8px}.study-history-inline{display:flex;flex-wrap:wrap;align-items:baseline;gap:2px 8px;line-height:1.35}.study-hist-move{font-size:11px}}.study-board-shell,.study-board-frame,.study-board-cell,.study-board-cell #study-board-board{filter:none!important;transform:none!important;backdrop-filter:none!important;-webkit-backdrop-filter:none!important}.library-page{position:relative;z-index:1;padding:72px 24px 24px;max-width:1600px;margin:0 auto}.library-page h1{font-size:1.6rem;margin-bottom:24px;background:linear-gradient(135deg,var(--peach-600),var(--coral));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.editor-container{display:flex;gap:24px;align-items:flex-start}.board-section{flex:0 0 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var(--glass-border-soft);border-radius:var(--radius-md);transition:all var(--transition)}.folder-card:hover{border-color:var(--peach-400);background:#ff8f6226;transform:translateY(-2px)}.folder-card div:first-child{font-size:24px;margin-bottom:5px}.folder-card strong{font-size:14px;display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.folder-card .count{font-size:11px;color:var(--text-muted);margin-top:4px}.positions-sortable-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}.pos-sort-item{display:flex;align-items:center;padding:12px;background:var(--glass-bg);border:1px solid var(--glass-border-soft);border-radius:var(--radius-md)}.pos-mini-preview{width:100px;height:100px;border-radius:var(--radius-sm);border:1px solid var(--glass-border-soft);overflow:hidden;background:#fff3;flex-shrink:0}.pos-details{flex:1;padding:0 14px;overflow:hidden}.pos-details 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