:root{--bg: #07080a;--bg-side: #090a0b;--panel: #0b0c0d;--panel-2: #0c0d0e;--panel-3: #0d0e0f;--panel-red: #0e0a0b;--line: #16191a;--line-2: #17191b;--line-3: #1f2224;--line-4: #24282a;--line-5: #2b2e31;--text: #f3f3f6;--text-code: #e9e9ee;--soft: #c2c7ca;--body: #9c9fa3;--muted: #78787c;--dim: #5e6366;--faint: #4a4e52;--ghost: #33373a;--red: #fc6464;--red-soft: #ffb3b3;--red-line: #3a1d20;--green: #4fd69c;--yellow: #ffc65c;--blue: #6cc7ff;--violet: #f0c6ff;--key-fill: linear-gradient(180deg, #1c1d1f, #121314);--red-fill: linear-gradient(180deg, #ff7d7d, #e5484d);--sans: "Geist", system-ui, sans-serif;--mono: "Geist Mono", monospace;--page-pad: 44px 48px 80px;--h1: 60px;--h2: 36px;--card-pad: 28px 30px;--unit-cols: 92px minmax(0, 1fr);--unit-num-dir: column;--unit-num-align: flex-start;--unit-num: 44px;--unit-gap: 30px;--split-dir: row;--editor-h: 540px;--output-h: 540px;--lesson-top-pad: 14px 28px;--lesson-body-pad: 44px 28px 40px;--lesson-foot-pad: 18px 28px;--question-size: 30px;--primary-flex: none;--web-dir: row;--dialog-align: center;--dialog-pad: 24px;--dialog-radius: 22px;--profile-w: 560px;--profile-max-h: 86vh;--auth-w: 880px;--auth-pad: 30px 30px}@media(max-width:999px){:root{--page-pad: 32px 28px 60px;--h1: 48px;--split-dir: column;--output-h: 240px}}@media(max-width:759px){:root{--page-pad: 20px 16px 104px;--h1: 36px;--h2: 26px;--card-pad: 20px;--unit-cols: minmax(0, 1fr);--unit-num-dir: row;--unit-num-align: center;--unit-num: 28px;--unit-gap: 22px;--editor-h: 360px;--lesson-top-pad: 10px 14px;--lesson-body-pad: 22px 16px 30px;--lesson-foot-pad: 14px 16px calc(14px + env(safe-area-inset-bottom)) ;--question-size: 24px;--primary-flex: 1;--web-dir: column;--dialog-align: flex-end;--dialog-pad: 0 0 env(safe-area-inset-bottom);--dialog-radius: 22px 22px 0 0;--profile-w: 100%;--profile-max-h: 92vh;--auth-w: 100%;--auth-pad: 22px 18px calc(22px + env(safe-area-inset-bottom)) }}html,body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);-webkit-font-smoothing:antialiased}*{box-sizing:border-box}a{color:var(--red)}a:hover{color:#ff9a9a}button{font:inherit;color:inherit}::selection{background:#fc646459}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-thumb{background:var(--line-3);border-radius:6px;border:2px solid var(--bg)}::-webkit-scrollbar-track{background:transparent}:focus-visible{outline:2px solid var(--red);outline-offset:2px}@keyframes blink{50%{opacity:0}}@keyframes rise{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}.dc-app{min-height:100vh;display:flex;background:var(--bg)}.dc-main{flex:1;min-width:0;display:flex;flex-direction:column}.dc-content{flex:1;padding:var(--page-pad)}.dc-container{max-width:1100px;margin:0 auto;width:100%}.dc-loading{padding:80px 0;font:500 13px var(--mono);color:var(--dim)}.dc-loading-cursor{animation:blink 1s steps(1) infinite}.sc-host[data-sc-name=Sidebar],.sc-host[data-sc-name=MobileTop],.sc-host[data-sc-name=MobileNav],.sc-host[data-sc-name=CourseScreen],.sc-host[data-sc-name=AlgoScreen],.sc-host[data-sc-name=LabScreen],.sc-host[data-sc-name=RunScreen],.sc-host[data-sc-name=RatingScreen],.sc-host[data-sc-name=AuthDialog],.sc-host[data-sc-name=ProfileDialog],.sc-host[data-sc-name=LessonView],.sc-host[data-sc-name=BattleView],.sc-host[data-sc-name=TaskBasic],.sc-host[data-sc-name=TaskCode],.sc-host[data-sc-name=TaskPlay],.sc-host[data-sc-name=Scene],.sc-host[data-sc-name=ClassScreen],.sc-host[data-sc-name=LiveView],.sc-host[data-sc-name=LiveSlide],.sc-host[data-sc-name=LivePractice],.sc-host[data-sc-name=EgeScreen],.sc-host[data-sc-name=EgeTask]{display:contents}.dc-toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%);z-index:95;max-width:min(92vw,520px);padding:12px 16px;border-radius:12px;border:1px solid var(--line-5);background:#121314;color:var(--text);font:500 14px/1.45 var(--sans);box-shadow:0 20px 50px #0000008c;animation:rise .25s ease}@media(max-width:759px){.dc-toast{bottom:calc(86px + env(safe-area-inset-bottom))}}