.student-theme{--background:#fafbf7;--foreground:#193e35;--muted:#65766a;--line:#dfe7dc;--brand:#237b65;--brand-strong:#1b6855;--brand-soft:#e8f1e4;--surface:#fff;--surface-soft:#f5f6ef;--surface-muted:#edf2e8;--student-header-height:calc(62px + env(safe-area-inset-top,0px));--student-viewport-height:100vh;--student-nav-height:calc(64px + env(safe-area-inset-bottom,0px));color:var(--foreground);overflow-wrap:anywhere;font-family:Microsoft YaHei,PingFang SC,sans-serif}.student-surface{min-height:var(--student-viewport-height);background:var(--background)}.student-surface .min-h-screen{min-height:var(--student-viewport-height)}.student-header{height:var(--student-header-height);padding-top:env(safe-area-inset-top);padding-left:max(16px, env(safe-area-inset-left));padding-right:max(16px, env(safe-area-inset-right))}.student-mobile-nav{height:var(--student-nav-height);padding-bottom:env(safe-area-inset-bottom);padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right)}.student-mobile-nav__item{color:var(--muted);border-radius:12px;margin:6px 4px;font-weight:500;transition:color .16s,background-color .16s;position:relative}.student-mobile-nav__item[aria-current=page]{background:var(--brand-soft);color:var(--brand);font-weight:700}.student-mobile-nav__item[aria-current=page]:before{background:var(--brand);content:"";border-radius:0 0 999px 999px;width:24px;height:3px;position:absolute;top:-6px;left:50%;transform:translate(-50%)}.student-main{padding-bottom:calc(var(--student-nav-height) + 24px)}.student-theme.modal-card{max-height:calc(var(--student-visible-height,var(--student-viewport-height)) - 2rem - env(safe-area-inset-top) - env(safe-area-inset-bottom));overscroll-behavior:contain;scroll-padding-block:16px}.student-theme.modal-card[data-placement=center]{top:calc(var(--student-visible-top,0px) + var(--student-visible-height,100%) / 2)}.student-theme.student-menu{max-height:var(--radix-dropdown-menu-content-available-height);overscroll-behavior:contain;overflow-y:auto}.student-theme.student-select{max-height:var(--radix-select-content-available-height)}.student-theme.reader-drawer{inset:0 auto 0 0;top:var(--student-visible-top,0px);width:min(340px,90vw);height:var(--student-visible-height,var(--student-viewport-height));max-height:none;padding:max(16px, env(safe-area-inset-top)) 16px max(20px, env(safe-area-inset-bottom));padding-left:max(16px, env(safe-area-inset-left));border-radius:0}.student-reader-shell{padding-left:0}.student-theme:has(.resource-workspace--courseware) .student-header{display:none}.student-theme:has(.resource-workspace--courseware) .student-reader-shell{min-height:var(--student-viewport-height)}.reader-directory-trigger,.reader-return{border:1px solid var(--line);background:var(--surface);min-height:40px;color:var(--foreground);border-radius:9px;flex-shrink:0;justify-content:center;align-items:center;gap:6px;font-size:13px;font-weight:650;line-height:1;transition:border-color .16s,color .16s,background-color .16s;display:inline-flex}.reader-directory-trigger{padding:0 11px}.reader-return{width:40px}.reader-directory-trigger:hover,.reader-return:hover{border-color:var(--brand);background:var(--brand-soft);color:var(--brand)}.reader-directory{overscroll-behavior:contain;scrollbar-gutter:stable}.resource-workspace{--reader-content-gutter:clamp(16px, 3vw, 48px)}.resource-workspace>div>main{min-width:0}.reader-bottom-bar{z-index:18;border-top:1px solid var(--line);min-height:68px;padding:10px max(16px, env(safe-area-inset-left)) max(10px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-right));background:color-mix(in srgb, var(--surface) 94%, transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);align-items:center;gap:10px;display:flex;position:sticky;bottom:0;box-shadow:0 -8px 24px #193e3514}.reader-bottom-bar__icon,.reader-bottom-bar__directory,.reader-bottom-bar__complete{border:1px solid var(--line);min-height:40px;color:var(--muted);background:var(--surface);border-radius:8px;justify-content:center;align-items:center;gap:7px;transition:border-color .16s,color .16s,background .16s;display:inline-flex}.reader-bottom-bar__icon{flex:0 0 40px;width:40px}.reader-bottom-bar__directory,.reader-bottom-bar__complete{padding:0 12px;font-size:13px;font-weight:650}.reader-bottom-bar__directory:hover,.reader-bottom-bar__complete:hover:not(:disabled),.reader-bottom-bar__icon:hover:not(:disabled){border-color:var(--brand);color:var(--brand)}.reader-bottom-bar__complete{border-color:var(--brand);color:#fff;background:var(--brand)}.reader-bottom-bar__complete--done{border-color:var(--line);color:var(--success);background:var(--success-soft)}.reader-bottom-bar button:disabled{cursor:not-allowed;opacity:.45}.reader-bottom-bar__context{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.reader-bottom-bar__context strong{color:var(--foreground);text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.reader-bottom-bar__context span{color:var(--muted);font-size:11px}.reader-toolbar{top:var(--student-header-height)}.student-theme .content-document{overflow-wrap:anywhere;min-width:0;max-width:100%}.student-theme .content-document :is(img,video,iframe,svg){max-width:100%}.student-theme .content-document :is(pre,.katex-display){overscroll-behavior-x:contain;max-width:100%;overflow-x:auto}.student-theme .content-document .katex{vertical-align:middle;white-space:nowrap;overflow-wrap:normal;max-width:100%;padding-block:.2em;display:inline-block;overflow:auto hidden}.student-theme .content-document table{overflow-wrap:normal}.student-theme .content-document .katex-display>.katex{display:block}.student-theme .recruitment-card-footer{flex-wrap:wrap}.student-theme .recruitment-card-footer>div{flex-wrap:wrap;max-width:100%}.student-theme .recruitment-card-footer strong{white-space:normal;overflow:visible}.student-theme .content-document :is(h1,h2,h3,h4,h5,h6),.student-theme #question-content{scroll-margin-top:calc(var(--student-header-height) + 110px)}@media (min-width:1024px){.student-theme{--student-header-height:68px;--student-nav-height:0px}.student-main{padding-bottom:32px}.student-header{padding-top:0}}@media (max-width:1023px){.student-main{padding-left:max(16px, env(safe-area-inset-left));padding-right:max(16px, env(safe-area-inset-right))}.student-main:has(.resource-workspace){padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right)}.student-theme :is(button:not([role=checkbox]):not([role=switch]):not([role=radio]),a[class*=size-],a[class*=h-],nav a,.practice-note-link,.student-header a,[role=menuitem]){min-width:44px;min-height:44px}.student-theme :is(input:not([type=checkbox]):not([type=radio]):not([type=hidden]),select,textarea,[role=combobox]){max-width:100%;min-height:44px;font-size:16px}.student-theme :is(button:not([role=checkbox]):not([role=switch]):not([role=radio]),a.inline-flex){white-space:normal;height:auto}.student-theme .practice-toolbar{padding-left:max(10px, env(safe-area-inset-left));padding-right:max(10px, env(safe-area-inset-right))}}@media (max-width:767px){.student-theme .reader-toolbar{gap:8px;padding:10px 12px}.student-theme .reader-toolbar h2{font-size:16px}.student-theme.reader-drawer{width:100%;height:min(78dvh,620px);max-height:min(78dvh,620px);padding:18px max(16px, env(safe-area-inset-left)) max(18px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-right));border-radius:18px 18px 0 0;inset:auto 0 0}.student-theme .reader-bottom-bar{padding-left:max(10px, env(safe-area-inset-left));padding-right:max(10px, env(safe-area-inset-right));gap:7px}.student-theme .reader-bottom-bar__directory,.student-theme .reader-bottom-bar__complete{padding-inline:9px}.student-theme .reader-bottom-bar__directory span{display:none}}@supports (height:100dvh){.student-theme{--student-viewport-height:100dvh}}