body.social-mode{background:#edf3ff}body.social-mode>header,body.social-mode #library,body.social-mode #book,body.social-mode #admin-panel,body.social-mode>footer,body.social-mode>.book-nav{display:none!important}#social-panel{display:none}body.social-mode #social-panel{display:block;max-width:1180px;margin:auto;padding:clamp(16px,3vw,32px);min-height:100dvh}.social-header{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}.social-header h1{font-size:clamp(1.6rem,4vw,2.3rem);margin:.5rem 0}.social-header nav,.social-toolbar,.social-teacher{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.social-toolbar{justify-content:space-between;margin:18px 0}.social-teacher{padding:18px;background:#fff;border-radius:18px;margin-bottom:20px}.social-teacher label{display:flex;gap:10px;font-weight:700}.social-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:18px}.student-card{background:#fff;border:2px solid #dce6fa;border-radius:24px;padding:20px 14px;display:flex;align-items:center;flex-direction:column;gap:10px;box-shadow:0 5px #c8d6f0;color:#20344e}.student-card:hover{border-color:#7351ca;transform:translateY(-2px)}.student-card .pawn{width:100px;height:110px}.student-card strong{font-size:1.2rem}.student-card small{font-size:.875rem;line-height:1.5}.presence{display:inline-flex;align-items:center;gap:6px;font-size:.875rem;color:#536077}.presence:before{content:"";width:9px;height:9px;border-radius:50%;background:#8390a4}.presence.is-online{color:#006448}.presence.is-online:before{background:#008b62}.student-numbers{display:flex;gap:14px;font-size:.875rem}.student-numbers b{display:block;font-size:1.35rem}.student-profile{display:grid;grid-template-columns:230px 1fr;gap:30px;background:#fff;padding:28px;border-radius:28px;margin-top:20px}.profile-portrait{text-align:center}.profile-portrait .pawn{display:block;width:180px;height:200px;margin:auto}.profile-portrait p{font-size:.9rem;line-height:1.6}.profile-record{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.profile-record>span{padding:15px;background:#ece6ff;border-radius:18px;text-align:center}.profile-record b{font-size:2rem;display:block;color:#50348d}.achievement-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:12px}.achievement-list>span{display:flex;flex-direction:column;gap:6px;border:1px solid #dce6fa;border-radius:15px;padding:8px}.achievement-list img{width:100%;height:90px;object-fit:cover;border-radius:10px}.achievement-list small{font-size:.875rem;color:#006448}.profile-awards{display:flex;gap:10px;flex-wrap:wrap}.profile-awards span{background:#fff2c3;border-radius:15px;padding:12px}.battle-arena{display:grid;grid-template-columns:1fr 150px 1fr;align-items:center;gap:20px;background:radial-gradient(ellipse at top,#5141ad,#232864);border:3px solid #a89cea;border-radius:30px;padding:24px;margin:22px 0;color:#fff;overflow:hidden;box-shadow:0 8px #d1d8f0}.arena-fighter{display:flex;align-items:center;flex-direction:column;gap:12px;font-size:1.4rem}.arena-fighter .pawn{width:150px;height:165px}.arena-right .avatar-picture{transform:scaleX(-1)}.arena-vs{text-align:center;font-size:3.5rem;font-weight:950;color:#ffd76a;font-style:italic}.arena-vs span{display:block;font-size:.875rem;color:#fff;font-style:normal;line-height:1.4}.battle-brief{background:#fff;border-radius:24px;padding:24px;max-width:920px;margin:auto}.battle-brief p{line-height:1.6}.battle-rules{display:flex;gap:12px;flex-wrap:wrap}.battle-rules>span{padding:12px;border-radius:14px;background:#f0ecff}.battle-list{display:grid;gap:14px}.battle-card{display:flex;align-items:center;gap:20px;text-align:left;background:#fff;border:2px solid #d5dff2;border-radius:22px;padding:15px;position:relative}.battle-card>span:nth-child(2){display:flex;flex-direction:column;gap:7px}.battle-card strong{font-size:1.1rem}.battle-card small{font-size:.9rem}.battle-mini-pawns{display:flex;align-items:center;gap:12px}.battle-mini-pawns .pawn{width:60px;height:65px}.battle-new{margin-left:auto;padding:6px 10px;border-radius:12px;color:#663600;background:#ffdb86}.battle-scoreboard{display:flex;justify-content:center;gap:20px}.battle-scoreboard>div{display:grid;gap:10px;text-align:center;border-radius:18px;padding:18px;background:#f0ecff}.battle-scoreboard strong{font-size:2rem}.battle-countdown{text-align:center;font-size:5rem;font-weight:900;color:#59409f;padding:25px}.battle-playing-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;font-weight:750;background:#28306a;color:#fff;padding:15px;border-radius:18px;margin-top:20px}#battle-clock{font-size:1.4rem;color:#fff3a2}.clock-low{color:#ffb59e!important}#social-content progress{width:100%;height:12px;margin:10px 0;accent-color:#7554c9}.battle-play{background:#fff;padding:clamp(18px,3vw,30px);border-radius:24px;max-width:980px;margin:auto;text-align:center}.battle-play h2{font-size:clamp(1.15rem,3vw,1.7rem);line-height:1.3;margin:5px 0 20px}.battle-multiply{display:flex;justify-content:center;align-items:center;gap:14px;font-size:clamp(2rem,6vw,4rem);font-weight:900;margin:25px 0}.battle-multiply span{background:#eee7ff;border-radius:18px;padding:10px 20px;color:#553497}.battle-multiply .unknown-number{background:#ffedb6;color:#705015}.battle-place-value{display:flex;justify-content:center;gap:12px;margin:18px 0}.battle-place-value span{display:grid;border-radius:16px;background:#e8edff;padding:8px 26px}.battle-place-value small{font-size:1rem}.battle-place-value b{font-size:3.4rem;color:#473799}.battle-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;max-width:800px;margin:auto}.battle-options button{display:flex;align-items:center;justify-content:center;gap:12px;border:2px solid #c7bce6;border-radius:18px;background:#f7f4ff;min-height:74px;font-size:1.2rem;padding:12px}.battle-options button:focus-visible{outline:4px solid #af5900}.battle-options button.is-picked{background:#ffe7a5}.battle-options button span{font-size:1.6rem}.battle-question-image{display:block;max-height:170px;max-width:260px;object-fit:contain;margin:12px auto}.battle-topic-icon{font-size:3rem;margin:12px}.battle-corrections{display:grid;gap:10px}.battle-corrections article{background:#ecf5ff;border-radius:15px;padding:14px}.social-empty{text-align:center;padding:45px;background:#fff;border-radius:24px}.social-empty>span{font-size:3rem}.board-top{position:relative}.avatar-notice{position:absolute!important;top:0;right:0;z-index:3;min-width:30px;height:30px;border-radius:50%;border:2px solid white;background:#a62b4e;color:#fff;padding:3px 7px;font-size:.9rem;box-shadow:0 2px 4px #24334c40}.has-notice-anchor{margin-right:16px}.social-header button,.social-header a{font-size:.9rem}.battle-play button:disabled{opacity:.6}@media(max-width:650px){.student-profile{grid-template-columns:1fr;padding:18px;gap:12px}.profile-portrait .pawn{width:120px;height:135px}.battle-arena{grid-template-columns:1fr 70px 1fr;padding:18px 8px;gap:4px}.arena-fighter .pawn{width:100px;height:110px}.arena-fighter{font-size:1rem}.arena-vs{font-size:2.1rem}.arena-vs span{font-size:.875rem}.battle-mini-pawns .pawn{width:40px;height:45px}.battle-mini-pawns{gap:5px}.battle-card{gap:10px}.battle-new{position:absolute;top:6px;right:8px;font-size:.8rem}.battle-card>span:nth-child(2){padding-top:10px}.battle-options button{font-size:1rem;min-height:65px}.battle-multiply{gap:8px}.battle-multiply span{padding:10px}.battle-playing-head{font-size:.9rem}}@media(prefers-reduced-motion:reduce){.student-card:hover{transform:none}}body.social-mode #desk{display:none!important}.avatar-notice-wrap{display:inline-flex;position:relative;padding-right:12px}.avatar-notice-wrap .avatar-notice{top:-6px;right:0}.battle-options .piece-icon{font-size:1.6rem}.battle-options svg{width:44px;height:44px}.teacher-brief-intro{background:#edf1ff;border-left:5px solid #614498;padding:16px;border-radius:12px;margin:8px 0 16px}.teacher-brief-intro h3{margin-top:0}.teacher-brief-intro p{line-height:1.55}#teacher-brief{display:grid;gap:14px}#teacher-brief[hidden]{display:none}.idea-specification{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.6;background:#f7f9ff;padding:16px;border-radius:12px}.idea-author-role{font-weight:750;color:#513b87}.battle-playing-head{position:sticky;top:0;z-index:2}#battle-answer-status{font-size:.95rem;line-height:1.5}.battle-options button b{overflow-wrap:anywhere}