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16px;position:relative}.search-input{width:100%;padding:12px 16px 12px 42px;border-radius:12px;border:1.5px solid var(--border);font-size:14px;background:var(--surface);outline:none;font-family:inherit;color:var(--text)}.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-mute)}.library-search-area{padding:8px 16px 0}.library-search-box{position:relative}.library-search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-mute);display:flex;pointer-events:none}.library-search-input{width:100%;min-height:46px;padding:12px 44px 12px 42px;border-radius:12px;border:1px solid var(--border);background:var(--surface);font-size:14px;outline:none;font-family:inherit;color:var(--text);box-shadow:0 1px #1e2a3b05}.library-search-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #0098d41f}.library-search-clear{position:absolute;right:7px;top:50%;transform:translateY(-50%);width:32px;height:32px;border:none;border-radius:8px;background:transparent;color:var(--text-mute);font-size:20px;line-height:1;font-family:inherit;cursor:pointer}.library-search-clear:active{background:var(--gray-100)}.lesson-search-panel{padding:12px 16px 0;display:flex;flex-direction:column;gap:10px}.lesson-filter-block{background:#ffffffb8;border:1px solid rgba(221,228,239,.92);border-radius:12px;padding:11px;display:flex;flex-direction:column;gap:9px}.lesson-filter-heading,.lesson-filter-label{font-size:11px;font-weight:800;color:var(--text-sub)}.lesson-chip-row{display:flex;flex-wrap:nowrap;justify-content:space-between;gap:6px;padding:1px 0 3px}.lesson-filter-chip,.lesson-subchip,.lesson-quick-chip{min-height:38px;border-radius:10px;border:1.5px solid var(--chip-soft, var(--border));background:var(--chip-bg, var(--surface));color:var(--chip-fg, var(--text-sub));font-size:12px;font-weight:800;font-family:inherit;white-space:nowrap;cursor:pointer;transition:transform .14s ease,box-shadow .14s ease,background .14s ease,border-color .14s ease}.lesson-filter-chip{flex:0 1 auto;padding:8px 12px;text-align:center}.lesson-filter-chip.is-neutral{--chip-bg: var(--surface);--chip-fg: var(--text-sub);--chip-soft: var(--border);--chip-solid: var(--primary)}.lesson-filter-chip.is-active{border-color:var(--chip-solid, var(--primary));background:var(--chip-solid, var(--primary));color:#fff;box-shadow:0 5px 12px #0098d42e}.lesson-filter-chip:active,.lesson-subchip:active,.lesson-quick-chip:active,.lesson-filter-toggle:active,.active-filter-pill:active,.filter-clear-btn:active,.detail-filter-toggle:active{transform:scale(.98)}.lesson-subchip-row,.lesson-quick-row,.lesson-active-filters{display:flex;flex-wrap:wrap;gap:7px}.lesson-subchip{min-height:34px;padding:6px 12px;border-color:var(--chip-soft, #B9D5FF);background:var(--chip-bg, #EEF6FF);color:var(--chip-fg, #1D4ED8)}.lesson-subchip.is-active{border-color:var(--chip-solid, var(--primary));background:var(--chip-solid, var(--primary));color:#fff;box-shadow:0 4px 10px #0098d429}.lesson-quick-chip{min-height:36px;padding:7px 12px;border-color:#dde4ef;background:var(--surface);color:var(--text)}.lesson-quick-chip.is-active{border-color:#1e2a3b;background:#1e2a3b;color:#fff}.lesson-quick-chip.is-cert{color:#334155;border-color:#d6dee9;background:linear-gradient(180deg,#fff,#f8fafc)}.lesson-quick-chip.is-cert.is-quick.is-active{border-color:#059669;background:#059669;color:#fff;box-shadow:0 5px 12px #0596692e}.lesson-quick-chip.is-cert.is-challenge.is-active{border-color:#ea580c;background:#ea580c;color:#fff;box-shadow:0 5px 12px #ea580c2e}.lesson-quick-chip.is-cert.is-future.is-active{border-color:#4f46e5;background:#4f46e5;color:#fff;box-shadow:0 5px 12px #4f46e52e}.lesson-filter-toggle{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;min-height:48px;padding:9px 10px 9px 12px;border-radius:11px;border:1.5px solid var(--border);background:var(--surface);color:var(--text);font-family:inherit;text-align:left;cursor:pointer;transition:transform .14s ease,border-color .14s ease,background .14s ease}.lesson-filter-toggle.is-active{border-color:var(--primary);background:#f3fbfe}.lesson-filter-toggle-text{display:flex;flex-direction:column;gap:2px;min-width:0}.lesson-filter-toggle-title{color:var(--text);font-size:12px;font-weight:900}.lesson-filter-toggle-subtitle{color:var(--text-sub);font-size:11px;font-weight:700;line-height:1.35}.lesson-filter-toggle-action{flex-shrink:0;min-width:45px;padding:5px 8px;border-radius:8px;background:var(--bg);color:var(--primary);font-size:11px;font-weight:900;text-align:center}.lesson-active-filters{padding:10px 16px 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var(--border);border-radius:10px;font-size:12px;font-weight:800;cursor:pointer;font-family:inherit}.detail-filter-toggle.is-active{background:var(--primary-bg);color:var(--primary);border-color:var(--primary)}.lesson-filter-panel{margin:0;background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px}.lesson-filter-group{display:flex;flex-direction:column;gap:6px;margin-bottom:12px}.lesson-filter-group:last-child{margin-bottom:0}.lesson-resultbar{padding:12px 16px 0;display:flex;justify-content:space-between;align-items:center;gap:12px}.lesson-result-count{font-size:13px;color:var(--text-sub);font-weight:800}@media(max-width:360px){.library-search-area,.lesson-search-panel,.lesson-active-filters,.lesson-filter-actions,.lesson-resultbar{padding-left:12px;padding-right:12px}.lesson-filter-panel{margin-left:12px;margin-right:12px}.lesson-filter-block{padding:10px}.lesson-filter-chip{padding-left:7px;padding-right:7px;font-size:11px}.lesson-quick-chip{font-size:11px;padding-left:10px;padding-right:10px}}.form-group{margin-bottom:20px}.form-label{font-size:14px;font-weight:700;color:var(--text);margin-bottom:8px;display:block}.form-required{color:var(--danger);font-size:12px;margin-left:4px}.form-input,.form-textarea{width:100%;padding:12px 14px;border-radius:var(--radius-sm);border:1.5px solid var(--border);font-size:14px;background:var(--surface);outline:none;font-family:inherit;color:var(--text)}.form-input:focus,.form-textarea:focus{border-color:var(--primary)}.form-textarea{min-height:100px;resize:vertical}.form-textarea.compact{min-height:72px}.post-type-helper{margin-top:8px;padding:8px 12px;background:var(--bg);border-radius:8px;font-size:12px;color:var(--text-sub);line-height:1.5}.post-try-guidance-card,.post-video-guide{margin:-2px 0 18px;padding:12px;border-radius:12px;border:1px solid #BEE1F0;background:#f2fafd}.post-video-guide{margin:0 0 10px;border-color:#d8e7f0;background:#f8fbfe}.post-try-guidance-title,.post-video-guide-title{font-size:13px;font-weight:900;color:var(--text)}.post-try-guidance-text,.post-video-guide-text{margin-top:4px;font-size:11px;line-height:1.65;color:var(--text-sub)}.post-progress-card{display:flex;flex-direction:column;gap:8px;padding:12px;margin:-2px 0 18px;border-radius:12px;border:1px solid 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auto}.post-draft-restore-title{font-size:15px;font-weight:800;color:var(--text);line-height:1.35}.post-draft-restore-sub{margin-top:2px;font-size:12px;font-weight:700;color:var(--primary)}.post-draft-restore-body{margin-top:12px;font-size:13px;line-height:1.7;color:var(--text-sub)}.post-draft-restore-actions{display:grid;grid-template-columns:1fr;gap:8px;margin-top:14px}.post-draft-primary-btn,.post-draft-secondary-btn{min-height:44px;padding:11px 14px;border-radius:12px;font-family:inherit;font-size:13px;font-weight:800;cursor:pointer}.post-draft-primary-btn{border:none;background:var(--primary);color:#fff}.post-draft-secondary-btn{border:1.5px solid var(--border);background:var(--surface);color:var(--text-sub)}.post-draft-restore-note{margin-top:10px;font-size:11px;line-height:1.6;color:var(--text-mute)}.post-draft-status{margin:-6px 0 18px;padding:10px;border:1px solid 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rgba(255,255,255,.26);border-radius:50%;background:#1e2a3bc7;color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);box-shadow:0 8px 20px #0f172a38}.cover-video-play-btn.is-playing{background:#1e2a3b94}.cover-pill{position:absolute;left:7px;bottom:7px;max-width:calc(100% - 14px);padding:3px 7px;border-radius:999px;background:#1e2a3bc7;color:#fff;font-size:10px;font-weight:900;line-height:1.2}.cover-pill-button{z-index:3;border:none;font-family:inherit;cursor:pointer}.cover-tile.is-cover .cover-pill{background:var(--primary)}.cover-remove-btn{position:absolute;top:-6px;right:-6px;width:26px;height:26px;border:none;border-radius:50%;background:#1e2a3be6;color:#fff;cursor:pointer;font-size:13px;font-family:inherit;display:flex;align-items:center;justify-content:center}.post-category-option-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-bottom:10px}.post-category-option-grid button{min-width:0;white-space:normal!important;line-height:1.25}.post-custom-category-btn{min-height:36px;margin:0 0 8px;padding:7px 12px;border-radius:10px;border:1.5px dashed var(--border);background:var(--surface);color:var(--primary);font-size:12px;font-weight:800;font-family:inherit;cursor:pointer}.memo-label-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px}.memo-label-row .form-label{margin-bottom:0}.memo-support-btn{min-height:34px;padding:7px 10px;border-radius:8px;border:1.5px solid #CFE0EF;background:#f7fcff;color:var(--primary);font-family:inherit;font-size:12px;font-weight:900;display:inline-flex;align-items:center;justify-content:center;gap:5px;white-space:nowrap;cursor:pointer}.memo-support-btn:active{transform:translateY(1px)}.support-memo-toggle{width:100%;min-height:44px;padding:10px 12px;border-radius:12px;border:1.5px solid var(--border);background:var(--surface);color:var(--text);font-family:inherit;font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:space-between;gap:10px;cursor:pointer}.support-memo-toggle span:last-child{font-size:11px;font-weight:800;color:var(--primary);white-space:nowrap}.support-memo-toggle.is-open{border-color:#b7ddf0;background:#f7fcff}.support-memo-panel{margin-top:8px;padding:12px;border:1px solid #DDEAF3;border-radius:12px;background:#f8fbfe}.support-memo-label{margin-bottom:8px;font-size:12px;font-weight:800;color:var(--text-sub)}.support-domain-grid{display:flex;flex-wrap:wrap;gap:6px}.support-domain-chip{min-height:34px;padding:7px 10px;border-radius:10px;border:1px solid #CAD8E5;background:#fff;color:var(--text-sub);font-family:inherit;font-size:12px;font-weight:800;cursor:pointer}.support-domain-chip.is-selected{border-color:var(--primary);background:var(--primary-bg);color:var(--primary)}.try-log-fields{display:flex;flex-direction:column;gap:8px;margin-top:14px}.post-submit-panel{padding:14px 0 24px;border-top:1px solid var(--border)}.post-submit-note{margin-bottom:8px;font-size:12px;font-weight:700;color:var(--text-sub)}.post-submit-panel.is-ready .post-submit-note{color:#047857}.upload-area{border:2px dashed var(--border);border-radius:var(--radius);padding:32px;text-align:center;cursor:pointer;background:var(--surface);color:var(--text-sub)}.chip-group{display:flex;flex-wrap:wrap;gap:8px}.chip{padding:8px 16px;border-radius:10px;font-size:13px;font-weight:600;cursor:pointer;border:1.5px solid var(--border);color:var(--text-sub);background:var(--surface)}.chip.selected{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary{width:100%;padding:16px;border-radius:var(--radius);border:none;background:var(--primary);color:#fff;font-size:16px;font-weight:700;cursor:pointer;font-family:inherit}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.login-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100dvh;padding:24px;background:linear-gradient(135deg,#0098d4,#006c97);color:#fff;text-align:center}.login-logo{font-size:64px;margin-bottom:16px}.login-title{font-size:28px;font-weight:800;margin-bottom:8px}.login-sub{font-size:14px;opacity:.85;margin-bottom:40px}.login-btn{display:flex;align-items:center;gap:12px;padding:16px 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#1e2a3b38;text-align:left}.plus-login-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}.plus-login-mark{width:48px;height:48px;border-radius:14px;font-size:22px}.plus-login-title{font-size:22px;line-height:1.2;font-weight:900;color:var(--text)}.plus-login-subtitle{margin-top:3px;font-size:12px;font-weight:700;color:var(--text-sub)}.plus-login-progress{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;margin-bottom:18px}.plus-login-progress span{min-height:32px;display:flex;align-items:center;justify-content:center;border-radius:10px;background:var(--gray-100);color:var(--text-mute);font-size:12px;font-weight:800}.plus-login-progress span.current{background:var(--primary-bg);color:var(--primary)}.plus-login-progress span.done{background:#eaf7f0;color:#2f855a}.plus-login-step-title{font-size:15px;font-weight:800;color:var(--text);margin-bottom:12px}.plus-school-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.plus-school-button{min-height:64px;padding:12px 10px;border-radius:12px;border:1px solid var(--border);background:#f8fafc;color:var(--text);font-family:inherit;cursor:pointer;text-align:left}.plus-school-button span{display:block;font-size:14px;font-weight:800;line-height:1.35}.plus-school-button small{display:block;margin-top:4px;font-size:11px;font-weight:700;color:var(--text-sub)}.plus-school-button:active,.plus-staff-button:active,.plus-login-back:active{transform:scale(.98)}.plus-login-back{min-height:40px;display:inline-flex;align-items:center;gap:5px;border:none;background:transparent;color:var(--primary);font-family:inherit;font-size:12px;font-weight:800;cursor:pointer;padding:0;margin-bottom:8px}.plus-staff-list{display:grid;gap:8px}.plus-staff-button{min-height:58px;display:flex;align-items:center;gap:11px;width:100%;border:1px solid var(--border);border-radius:14px;background:#f8fafc;color:var(--text);cursor:pointer;font-family:inherit;padding:8px 10px;text-align:left}.plus-staff-button span{flex:1;min-width:0;font-size:14px;font-weight:800;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.login-staff-avatar{flex:0 0 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var(--border)}.calendar-title{font-size:13px;font-weight:700;color:var(--text);margin-bottom:8px}.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:4px}.cal-day{width:100%;aspect-ratio:1;border-radius:4px;background:var(--bg)}.cal-day.active-1{background:#c7d9fd}.cal-day.active-2{background:#4db5de}.cal-day.active-3{background:var(--primary)}.cal-label{font-size:11px;color:var(--text-mute);text-align:center}.cal-info{font-size:12px;color:var(--text-sub);margin-top:8px}.month-header{padding:12px 16px;font-size:13px;font-weight:700;color:var(--text-sub);background:var(--bg)}.profile-lesson{display:flex;align-items:center;gap:12px;padding:12px 16px;background:var(--surface);border-bottom:1px solid var(--border);cursor:pointer}.profile-lesson-thumb{width:60px;height:42px;border-radius:6px;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:#fff;background:var(--cat-movement)}.profile-lesson-info{flex:1;min-width:0}.profile-lesson-title{font-size:14px;font-weight:600;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.profile-lesson-meta{font-size:12px;color:var(--text-sub)}.profile-lesson-stars{font-size:14px;font-weight:700;color:var(--accent);flex-shrink:0}.detail-video-frame{background:#000;display:flex;align-items:center;justify-content:center;overflow:hidden}.detail-video{display:block;width:100%;height:auto;max-height:min(72vh,640px);object-fit:contain;background:#000}.detail-title-row{margin-bottom:8px;display:flex;align-items:flex-start;gap:8px}.cert-manager-panel{margin:-2px 0 12px;padding:10px;border:1px solid #E1E8F0;border-radius:12px;background:#f8fbfe}.cert-manager-title{margin-bottom:8px;color:var(--text-sub);font-size:11px;font-weight:900}.cert-manager-actions{display:flex;flex-wrap:wrap;gap:7px}.cert-toggle{min-height:36px;padding:7px 11px;border-radius:10px;border:1.5px solid #D8E1EA;background:var(--surface);color:var(--text-sub);font-family:inherit;font-size:12px;font-weight:900;cursor:pointer}.cert-toggle:disabled{cursor:wait;opacity:.65}.cert-toggle.is-selected{color:#fff}.cert-toggle-quick.is-selected{border-color:#059669;background:#059669}.cert-toggle-challenge.is-selected{border-color:#ea580c;background:#ea580c}.cert-toggle-future.is-selected{border-color:#4f46e5;background:#4f46e5}.detail-try-plus-panel{margin:12px 12px 0;padding:16px 14px 18px;border:1.5px solid #F7B955;border-radius:16px;background:linear-gradient(180deg,#fffcf1fa,#fffffffa 56%),radial-gradient(circle at top right,rgba(125,211,252,.32),transparent 44%);box-shadow:0 14px 34px #92400e1f}.detail-parent-badge-row{display:flex;align-items:center;flex-wrap:wrap;gap:7px;margin-bottom:10px}.detail-parent-link{display:inline-flex;align-items:center;gap:6px;flex:0 1 auto;min-width:0;max-width:100%;min-height:32px;padding:6px 12px;border-radius:10px;border:1px solid var(--primary);background:var(--primary-bg);color:var(--primary);font-size:12px;font-weight:700;cursor:pointer}.detail-parent-link span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.detail-try-plus-badge,.detail-child-badge{display:inline-flex;align-items:center;gap:3px;padding:4px 8px;border-radius:7px;background:#fef3c7;color:#92400e;border:1px solid #FCD34D;font-size:10px;font-weight:900;line-height:1.2}.detail-try-plus-badge{min-height:30px;background:linear-gradient(135deg,#fef3c7,#eaf8fd);color:#8a3b12;box-shadow:inset 0 0 0 1px #ffffffa6}.detail-derivative-card{display:flex;gap:10px;padding:10px;background:#fff;border-radius:12px;border:1px solid var(--border);cursor:pointer}.detail-derivative-card.is-try-plus{border-color:#f7b955;background:linear-gradient(180deg,#fffcf1,#fff 70%);box-shadow:0 8px 22px #92400e1a}.detail-child-badge.is-try-plus{background:linear-gradient(135deg,#fef3c7,#eaf8fd);color:#8a3b12;border-color:#f59e0b}.detail-menu-btn{width:46px;height:46px;border:2px solid #1E2A3B;border-radius:12px;background:var(--surface);color:#45566f;font-family:inherit;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 12px #1e2a3b1f;transition:transform .12s ease,box-shadow .12s ease,background .12s ease}.detail-menu-btn:active{transform:translateY(1px);background:var(--bg);box-shadow:0 2px 8px #1e2a3b29}.support-note-box{display:flex;flex-direction:column;gap:12px;margin-top:14px;padding:12px;border:1px solid #DDEAF3;border-radius:12px;background:#f8fbfe}.support-note-title{margin-bottom:6px;font-size:12px;font-weight:800;color:var(--text-sub)}.support-note-chips{display:flex;flex-wrap:wrap;gap:6px}.support-note-chip{display:inline-flex;align-items:center;min-height:28px;padding:5px 9px;border-radius:9px;background:#fff;border:1px solid #CAD8E5;color:var(--primary);font-size:11px;font-weight:800}.try-note-list{display:flex;flex-direction:column;gap:8px}.try-note-row span{display:block;margin-bottom:2px;color:var(--text-mute);font-size:11px;font-weight:800}.try-note-row p{margin:0;color:var(--text);font-size:13px;line-height:1.55;white-space:pre-wrap}.dash-card{background:var(--surface);border-radius:var(--radius);padding:16px;margin-bottom:12px;border:1px solid var(--border)}.dash-card-title{font-size:14px;font-weight:700;color:var(--text);margin-bottom:12px}.dash-row{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid var(--border)}.dash-row:last-child{border-bottom:none}.dash-label{font-size:13px;color:var(--text-sub)}.dash-value{font-size:14px;font-weight:700;color:var(--text)}.dash-bar{height:8px;border-radius:4px;background:var(--bg);margin-top:4px;overflow:hidden}.dash-bar-fill{height:100%;border-radius:4px}.export-btn{width:100%;padding:14px;border-radius:var(--radius-sm);border:2px solid var(--primary);background:var(--surface);color:var(--primary);font-size:15px;font-weight:700;cursor:pointer;margin-top:8px;text-align:center;font-family:inherit}.reaction-summary{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}.reaction-badge{padding:4px 12px;border-radius:10px;font-size:12px;font-weight:600;background:var(--accent-light);color:#c2410c}.practice-item{display:flex;gap:10px;padding:12px;background:var(--bg);border-radius:var(--radius-sm);margin-bottom:8px}.practice-tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:4px}.practice-tag{padding:2px 8px;border-radius:8px;font-size:11px;background:var(--accent-light);color:#c2410c}.filter-select{font-size:12px;padding:6px 10px;border-radius:8px;border:1px solid var(--border);font-family:inherit;background:var(--surface);color:var(--text)}@media(max-width:480px),(hover:none)and (pointer:coarse){.search-input,.library-search-input,.form-input,.form-textarea,.comment-input,.filter-select{font-size:16px}}@keyframes legendPulse{0%,to{transform:scale(1)}50%{transform:scale(1.12)}}.text-primary{color:var(--primary)}.text-accent{color:var(--accent)}.text-danger{color:var(--danger)}.text-gray{color:var(--text-sub)}.font-bold{font-weight:700}.mt-8{margin-top:8px}.mb-8{margin-bottom:8px}.mb-16{margin-bottom:16px}