.member-bottom-nav{position:fixed;inset:auto 0 0;z-index:30;border-top:1px solid var(--color-bip-border);background:var(--color-bip-surface);padding-bottom:var(--bip-member-safe-area, env(safe-area-inset-bottom, 0px))}.member-bottom-nav.is-typing{visibility:hidden;pointer-events:none}.member-nav-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));max-width:672px;margin:0 auto;padding:0 8px}.member-nav-link{min-height:44px;min-width:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;padding:6px 4px;font-size:.75rem;line-height:1.4;color:var(--color-bip-ink-soft);text-align:center;overflow-wrap:anywhere}.member-nav-icon{display:grid;place-items:center;width:48px;height:28px;border-radius:100px;flex-shrink:0}.member-nav-link.is-current{color:var(--color-bip-red);font-weight:700}.member-nav-link.is-current .member-nav-icon{background:color-mix(in srgb,var(--color-bip-red) 12%,transparent)}.member-nav-link:focus-visible,.member-nav-trigger:focus-visible,.member-nav-dialog button:focus-visible{outline:3px solid var(--color-bip-red);outline-offset:-3px;border-radius:8px}.member-nav-measure{position:fixed;visibility:hidden;pointer-events:none;inset:0 auto auto 0;display:flex;width:max-content;font-size:.75rem;line-height:1.4;font-weight:700}.member-nav-measure span{display:block;white-space:pre}.member-nav-trigger{display:flex;align-items:center;justify-content:center;gap:12px;min-height:52px;width:100%;padding:8px 16px;font-size:.875rem;line-height:1.4;font-weight:600;color:var(--color-bip-ink)}.member-nav-trigger svg{flex-shrink:0}.member-nav-trigger span{overflow-wrap:anywhere;min-width:0}.member-nav-dialog{color:var(--color-bip-ink);background:var(--color-bip-surface);border:1px solid var(--color-bip-border);border-radius:20px;padding:16px;width:calc(100% - 24px);max-width:560px;max-height:calc(100dvh - 32px);margin:auto;overflow:auto}.member-nav-dialog::backdrop{background:#00000061}.member-nav-dialog-heading{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding-bottom:12px}.member-nav-dialog-heading h2{font-weight:700;font-size:1rem}.member-nav-dialog-heading button{min-height:44px;padding:8px 12px;border:1px solid var(--color-bip-border);border-radius:12px;font-size:.875rem}.member-nav-options{display:grid;gap:12px}.member-nav-options .member-nav-link{flex-direction:row;justify-content:flex-start;text-align:left;font-size:1rem;padding:8px;border-radius:12px}.member-nav-options .member-nav-link.is-current{background:color-mix(in srgb,var(--color-bip-red) 8%,transparent)}.bip-member-content{padding:calc(var(--bip-member-safe-top, env(safe-area-inset-top, 0px)) + 12px) 16px 0}@media(min-width:640px){.bip-member-content{padding-inline:24px}}:is(.bip-member-page,.tutor-reading) .bip-proportional-card{padding:16px}:is(.bip-member-page,.tutor-reading) .bip-proportional-button{min-height:44px;padding:10px 16px;gap:8px}:is(.bip-member-page,.tutor-reading) .bip-proportional-empty{padding-block:24px;gap:8px}:is(.bip-member-page,.tutor-reading) .bip-proportional-empty svg{width:32px;height:32px;margin-bottom:4px}.bip-learning{color:var(--color-bip-ink);padding-bottom:24px}.bip-learning :where(h1,h2,h3,p){overflow-wrap:anywhere}.bip-learning h1{font-size:clamp(1.6rem,3vw,2.25rem);font-weight:750;line-height:1.2;letter-spacing:-.025em}.bip-learning h2{font-size:1.2rem;font-weight:700;line-height:1.4}.bip-learning h3{font-size:1rem;font-weight:650;line-height:1.4}.bip-learning :where(button,a,input,select,textarea):focus-visible{outline:3px solid #9a1720;outline-offset:3px}.bip-learning :where(input,select,textarea){max-width:100%;min-height:44px}.bip-learning :where(audio,video,img){max-width:100%}.bip-learning :where(a){text-underline-offset:3px}.learning-welcome{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;padding:28px;border:1px solid var(--color-bip-border);border-radius:24px;background:var(--color-bip-surface);margin-bottom:24px}.learning-welcome-compact{padding:20px}.learning-welcome>div:first-child{flex:1 1 12rem;min-width:0}.learning-eyebrow{font-size:.75rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--color-bip-ink-soft);margin-bottom:8px}.learning-intro{margin-top:12px;max-width:52ch;line-height:1.6;color:var(--color-bip-ink-soft)}.learning-dragon{flex:none;object-fit:contain;pointer-events:none;animation:learning-arrive .45s ease-out both}.learning-dragon-celebrate{animation:learning-cheer .7s ease-in-out 1}.learning-stack{display:flex;flex-direction:column;gap:24px;min-width:0}.learning-panel{padding:24px;border:1px solid var(--color-bip-border);border-radius:20px;background:var(--color-bip-surface);min-width:0}.learning-panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:20px}.learning-muted{color:var(--color-bip-ink-soft);font-size:.875rem;line-height:1.6}.learning-actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-top:20px}.learning-field{display:flex;flex-direction:column;gap:8px;font-weight:600;min-width:0}.learning-field :where(input,select,textarea){width:100%;border:1px solid var(--color-bip-border);border-radius:12px;padding:12px;background:var(--color-bip-surface);font-weight:400;line-height:1.5}.learning-field textarea{min-height:110px;resize:vertical}.learning-form{display:grid;gap:24px}.learning-status{display:inline-flex;align-items:center;min-height:28px;padding:4px 10px;border-radius:999px;font-size:.75rem;font-weight:700;line-height:1.4;background:var(--color-bip-surface-sunken);color:var(--color-bip-ink)}.learning-status-waiting{background:#fff3d8;color:#714400}.learning-status-success{background:#e5f3e9;color:#235b37}.learning-status-warning{background:#fff0e8;color:#873b17}.learning-details{border-top:1px solid var(--color-bip-border);padding-top:16px}.learning-details>summary{cursor:pointer;min-height:44px;padding:10px 0;font-weight:600}.learning-detail-body{padding:8px 0 16px;display:grid;gap:12px;font-size:.875rem;line-height:1.65}.learning-detail-body ul{list-style:disc;padding-left:20px}.learning-detail-body a{text-decoration:underline}.learning-empty{display:flex;flex-wrap:wrap;align-items:center;gap:20px;padding:24px;background:var(--color-bip-surface-sunken);border-radius:16px}.learning-empty>div{flex:1 1 12rem;min-width:0}.learning-empty p{margin-top:6px;font-size:.875rem;line-height:1.6;color:var(--color-bip-ink-soft)}.learning-upload{border:2px dashed var(--color-bip-border);border-radius:16px;padding:24px;text-align:center;background:var(--color-bip-surface-sunken)}.learning-upload input[type=file]{font-size:.875rem}.learning-preview{display:grid;gap:12px;text-align:left}.learning-preview img{max-height:240px;object-fit:contain;border-radius:12px;margin:auto}.learning-preview audio{width:100%}.learning-file-name{font-weight:600;font-size:.875rem;overflow-wrap:anywhere}.learning-upload .learning-actions{justify-content:center}.learning-history{display:grid;gap:16px;margin-top:20px}.learning-history-item{padding:20px;border:1px solid var(--color-bip-border);border-radius:16px;display:grid;gap:16px}.learning-feedback{border-left:3px solid var(--color-bip-primary);padding:12px 16px;background:var(--color-bip-surface-sunken);border-radius:0 12px 12px 0;white-space:pre-wrap}.learning-two-columns{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(260px,1fr);gap:24px;align-items:start}.learning-message{max-width:90%;padding:16px 20px;border-radius:16px;background:var(--color-bip-surface-sunken);white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.7}.learning-message-member{margin-left:auto;border:1px solid var(--color-bip-border);background:var(--color-bip-surface)}.learning-options{display:grid;gap:12px;margin-top:16px}.learning-option{display:flex;gap:12px;align-items:center;min-height:52px;padding:14px;border:1px solid var(--color-bip-border);border-radius:12px;cursor:pointer}.learning-option input{min-height:auto;width:20px;height:20px;accent-color:var(--color-bip-primary)}.learning-option:has(input:checked){border-color:var(--color-bip-primary);box-shadow:inset 0 0 0 1px var(--color-bip-primary)}@keyframes learning-arrive{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@keyframes learning-cheer{0%,to{transform:rotate(0)}35%{transform:rotate(-5deg)}65%{transform:rotate(4deg)}}@media(max-width:767px){.learning-two-columns{grid-template-columns:minmax(0,1fr)}.learning-welcome{padding:20px;gap:12px}.learning-welcome>.learning-dragon{width:76px!important;height:70px!important}.learning-panel{padding:20px}.learning-actions>*{flex:1 1 auto}.learning-upload{padding:16px}.learning-empty{padding:18px;gap:12px}}@media(prefers-reduced-motion:reduce){.bip-learning *,.learning-dragon{animation:none!important;transition:none!important;scroll-behavior:auto!important}}.learning-period-controls{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px}@media(max-width:767px){.learning-period-controls{align-items:stretch;flex-direction:column;gap:12px}.learning-period-controls>.learning-field{width:100%}}.learning-history-columns{display:grid;grid-template-columns:minmax(0,1fr);align-items:start;gap:24px}.learning-history-columns>*{min-width:0}@media(min-width:768px){.learning-history-columns{grid-template-columns:minmax(240px,1fr) minmax(0,1.65fr)}}.learning-evidence-filters{display:flex;flex-wrap:wrap;align-items:end;gap:.75rem}.learning-evidence-search{display:block;flex:1 1 16rem;min-width:0}.learning-evidence-search>span{display:block}.learning-evidence-help{display:flex;align-items:center;gap:.75rem;min-height:44px;max-width:100%}.learning-evidence-help input{flex-shrink:0}.learning-evidence-help span{min-width:0}