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900;font-display:swap}.surface-student{color-scheme:dark;--s-bg:#000;--s-bg-soft:#000;--s-card:#1f1f1f;--s-card-2:#1f1f1f;--s-card-3:#242424;--s-text:#fff;--s-muted:#b7b7b7;--s-muted-2:#858585;--s-accent:#15429d;--s-accent-strong:#fff;--s-gold:#b7b7b7;--s-gold-soft:#fff;--s-success:#fff;--s-danger:#ff6b72;--s-border:#333;--s-border-strong:#545454;--s-shadow:none;--s-radius-sm:12px;--s-radius:16px;--s-radius-lg:22px;background:#000;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Arial,sans-serif}.surface-student__body{color:#fff;background:#000;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Arial,sans-serif}.surface-student button:focus-visible,.surface-student a:focus-visible,.surface-student summary:focus-visible,.surface-student [tabindex]:focus-visible{outline-offset:3px;outline:2px solid #fff}.surface-student .mini-app{width:min(100%,560px);min-height:var(--app-viewport-height);padding:calc(18px + var(--app-safe-top)) 0 calc(90px + var(--app-safe-bottom));background:#000;margin:0 auto;overflow-x:clip}.surface-student .mini-app--detail{padding:calc(18px + var(--app-safe-top)) calc(24px + var(--app-safe-right)) calc(32px + var(--app-safe-bottom)) calc(24px + var(--app-safe-left))}.surface-student .mini-app--gate{min-height:var(--app-viewport-height);padding:calc(24px + var(--app-safe-top)) calc(24px + var(--app-safe-right)) calc(24px + var(--app-safe-bottom)) calc(24px + var(--app-safe-left));place-items:center;display:grid}.surface-student .mini-app--gate .state-card{width:100%;box-shadow:none;background:#121212;border:1px solid #333;border-radius:18px;padding:30px 24px}.surface-student .mini-app--gate .eyebrow{color:#b7b7b7}.surface-student .mini-app--gate h1{letter-spacing:-.035em;margin:8px 0 12px;font-family:inherit;font-size:1.75rem;font-weight:720;line-height:1.08}.surface-student .screen{animation:.16s both screen-in}.surface-student .home-screen--compact{display:block}.surface-student .profile-bar--compact{min-height:44px;padding:0 calc(24px + var(--app-safe-right)) 12px calc(24px + var(--app-safe-left));gap:10px;margin:0}.surface-student .avatar{color:#fff;width:38px;height:38px;box-shadow:none;background:#1f1f1f;border:1px solid #3a3a3a;border-radius:11px;flex:0 0 38px;font-size:.8rem;overflow:hidden}.surface-student .avatar--photo{object-fit:cover;display:block}.surface-student .profile-bar__copy strong{text-overflow:ellipsis;white-space:nowrap;max-width:100%;font-size:.96rem;font-weight:580;overflow:hidden}.surface-student .points-pill{color:#fff;background:#1f1f1f;border-radius:11px;flex:none;justify-content:center;align-items:baseline;gap:4px;min-width:88px;min-height:34px;padding:0 12px;display:flex}.surface-student .points-pill strong{font-size:.9rem;font-weight:760}.surface-student .points-pill span{color:#b7b7b7;font-size:.66rem}.surface-student .course-cover{aspect-ratio:16/9;margin:0 calc(24px + var(--app-safe-right)) 10px calc(24px + var(--app-safe-left));box-shadow:none;isolation:isolate;background-color:#0c0606;background-position:50%;background-size:cover;border:1px solid #282020;border-radius:22px;display:block;position:relative;overflow:hidden}.surface-student .course-cover:after{z-index:-1;content:"";background:linear-gradient(90deg,#040202f5 0%,#070303bf 48%,#0703031a 100%);position:absolute;inset:0}.surface-student .course-cover__copy{z-index:2;flex-direction:column;justify-content:center;align-items:flex-start;width:54%;padding:clamp(13px,4vw,24px);display:flex;position:absolute;inset:0 auto 0 0}.surface-student .course-cover__copy h1{color:#fff;letter-spacing:-.045em;text-wrap:balance;margin:0;font-family:Siyanie Condensed,Arial Narrow,sans-serif;font-size:clamp(1.06rem,5.2vw,1.78rem);font-weight:780;font-stretch:75%;line-height:.88}.surface-student .course-cover__copy>span{color:#d0d0d0;-webkit-line-clamp:3;-webkit-box-orient:vertical;max-width:235px;margin-top:clamp(6px,1.7vw,10px);font-size:clamp(.64rem,2vw,.76rem);line-height:1.27;display:-webkit-box;overflow:hidden}.surface-student .course-cover__action{color:#fff;cursor:pointer;background:#008525;border:0;border-radius:12px;align-items:center;gap:5px;min-height:32px;margin-top:clamp(7px,1.8vw,12px);padding:0 12px;font-size:clamp(.64rem,1.9vw,.76rem);font-weight:720;display:inline-flex;position:relative}.surface-student .course-cover__action:before,.surface-student .category-filter--compact button:before{content:"";position:absolute;inset-block:-6px;inset-inline:0}.surface-student button.lesson-card__pill:before{content:"";position:absolute;inset-block:-7px;inset-inline:0}.surface-student .course-cover__action span{margin-top:-1px;font-size:1rem;line-height:1}.surface-student .course-cover__action:disabled{color:#8f8f8f;background:#333}.surface-student .course-system{z-index:1;color:#ffffff94;width:49%;height:84%;position:absolute;top:8%;right:2%;overflow:visible}.surface-student .course-system circle,.surface-student .course-system path{fill:none;stroke:currentColor;stroke-width:1px}.surface-student .course-system circle:not(:first-child){fill:#fff;stroke:#0b0505;stroke-width:2px}.surface-student .course-system text{fill:#fff;letter-spacing:.02em;font-family:Siyanie Condensed,Arial Narrow,sans-serif;font-size:8px;font-weight:700}.surface-student .course-system__center{fill:#ffffffad!important;letter-spacing:.24em!important;font-size:7px!important}.surface-student .course-progress{margin:0 calc(24px + var(--app-safe-right)) 14px calc(24px + var(--app-safe-left));background:#121212;border:0;border-radius:14px;padding:0 7px}.surface-student .course-journey__step{flex-basis:48px;width:48px}.surface-student .course-journey__button{min-height:34px;position:relative}.surface-student .course-journey__button:before{content:"";position:absolute;inset-block:-5px;inset-inline:0}.surface-student .course-journey__step:not(:last-child):after{width:calc(100% - 18px);height:2px;box-shadow:none;background:#444;top:17px;left:calc(50% + 9px)}.surface-student .course-journey__step--completed:not(:last-child):after{box-shadow:none;background:#fff}.surface-student .course-journey__stop{color:#777;width:18px;height:18px;box-shadow:none;background:#242424;border-color:#565656}.surface-student .course-journey__step--current .course-journey__stop,.surface-student .course-journey__step--available .course-journey__stop{color:#fff;box-shadow:none;background:#15429d;border-color:#2e5dc1}.surface-student .course-journey__step--completed .course-journey__stop{color:#000;background:#fff;border-color:#fff}.surface-student .course-journey__step--locked .course-journey__stop{color:#777;background:#242424}.surface-student .materials-section{min-width:0;padding:20px calc(24px + var(--app-safe-right)) 26px calc(24px + var(--app-safe-left));scroll-margin-top:calc(10px + var(--app-safe-top));background:#121212;border-radius:22px 22px 0 0;margin-top:0}.surface-student .materials-heading{margin:0 0 14px}.surface-student .materials-heading h2,.surface-student .more-heading h1{letter-spacing:-.035em;margin:0;font-family:inherit;font-size:clamp(1.45rem,5.8vw,1.75rem);font-weight:560;line-height:1.05}.surface-student .category-filter--compact{margin:-3px calc(-24px - var(--app-safe-right)) 12px calc(-24px - var(--app-safe-left));padding:3px calc(24px + var(--app-safe-right)) 7px calc(24px + var(--app-safe-left));gap:7px;scroll-padding-inline:24px}.surface-student .category-filter--compact button{color:#fff;background:#1f1f1f;border:1px solid #333;border-radius:16px;min-height:34px;padding:0 13px;font-size:.78rem;font-weight:600;position:relative}.surface-student .category-filter--compact button.active{color:#000;background:#f3f3f3;border-color:#f3f3f3}.surface-student .lesson-list--linear{gap:10px}.surface-student .lesson-card--compact{background:#1f1f1f;border:0;border-radius:13px;grid-template-columns:clamp(88px,30%,132px) minmax(0,1fr);min-height:130px;display:grid;overflow:hidden}.surface-student .lesson-card--compact.is-locked{background:#1f1f1f}.surface-student .lesson-card--compact .lesson-cover{aspect-ratio:1;background:#161616;border-radius:9px;align-self:center;min-height:0;margin:8px;padding:0;display:block;position:relative;overflow:hidden}.surface-student .lesson-card--compact .lesson-cover:before,.surface-student .lesson-card--compact .lesson-cover:after{display:none}.surface-student .lesson-cover img{aspect-ratio:1;object-fit:cover;width:100%;height:100%;min-height:0;display:block}.surface-student .lesson-card.is-locked .lesson-cover img{filter:grayscale(.42)brightness(.66)}.surface-student .lesson-cover__duration{color:#fff;letter-spacing:0;text-transform:none;background:#000000b3;border-radius:6px;padding:3px 5px;font-size:.6rem;font-weight:650;position:absolute;bottom:7px;right:7px}.surface-student .lesson-cover__state{color:#fff;background:#00000094;border:1px solid #ffffffb3;border-radius:50%;place-items:center;width:32px;height:32px;display:grid;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.surface-student .lesson-card--compact .lesson-card__body{min-width:0;padding:10px 10px 9px}.surface-student .lesson-card__kicker{color:#b7b7b7;letter-spacing:.06em;text-transform:uppercase;margin-bottom:4px;font-size:.58rem;font-weight:720}.surface-student .lesson-card--compact h2{color:#fff;letter-spacing:-.015em;text-transform:uppercase;-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:0 0 5px;font-family:inherit;font-size:clamp(.8rem,3vw,.92rem);font-weight:680;line-height:1.12;display:-webkit-box;overflow:hidden}.surface-student .lesson-card--compact p{color:#b7b7b7;-webkit-line-clamp:2;-webkit-box-orient:vertical;margin:0 0 7px;font-size:clamp(.65rem,2.3vw,.73rem);line-height:1.28;display:-webkit-box;overflow:hidden}.surface-student .lesson-card__actions{align-items:center;gap:5px;width:100%;min-width:0;min-height:42px;margin-top:auto;display:flex}.surface-student .lesson-card__pill{color:#fff;text-overflow:ellipsis;white-space:nowrap;border:0;border-radius:11px;flex:0 auto;justify-content:center;align-items:center;min-width:0;min-height:30px;padding:0 8px;font-size:clamp(.56rem,1.9vw,.66rem);font-weight:650;line-height:1;display:inline-flex;overflow:hidden}.surface-student button.lesson-card__pill{cursor:pointer;min-height:30px;position:relative}.surface-student .lesson-card__pill--primary,.surface-student .lesson-card__pill--value{background:#15429d}.surface-student .lesson-card__pill--primary.is-disabled{color:#b4b4b4;cursor:default;opacity:1;background:#4a4a4a}.surface-student .lesson-card__pill--details{background:#4a4a4a}.surface-student .button{min-height:46px;box-shadow:none;border-radius:999px}.surface-student .button--primary{color:#fff;box-shadow:none;background:#15429d}.surface-student .button--secondary{color:#fff;background:#2f2f2f;border-color:#3d3d3d}.surface-student .button--ghost{color:#fff}.surface-student .card{box-shadow:none;background:#1f1f1f;border:1px solid #333}.surface-student .status-chip{color:#fff;background:#2b2b2b;border-color:#3d3d3d}.surface-student .progress{background:#3d3d3d}.surface-student .progress span{background:#15429d}.surface-student .lesson-screen,.surface-student .profile-screen{min-width:0}.surface-student .mini-app:not(.mini-app--detail) .profile-screen{padding:0 calc(24px + var(--app-safe-right)) 18px calc(24px + var(--app-safe-left))}.surface-student .screen-header{margin:0 0 18px}.surface-student .screen-header h1{letter-spacing:-.035em;font-family:inherit;font-size:clamp(1.45rem,6vw,2rem);font-weight:680;line-height:1.08}.surface-student .icon-button{color:#fff;background:#1f1f1f;border-color:#333;border-radius:50%}.surface-student .lesson-media,.surface-student .youtube-frame{aspect-ratio:16/9;min-height:200px;box-shadow:none;background-color:#121212;background-position:50%;background-size:cover;border:1px solid #333;border-radius:16px}.surface-student .lesson-media:before{z-index:-1;content:"";background:#00000057;position:absolute;inset:0}.surface-student .lesson-media:after,.surface-student .lesson-media__spotlight{display:none}.surface-student .play-button{color:#fff;width:64px;height:64px;box-shadow:none;background:#15429deb;border-color:#ffffffbd}.surface-student .youtube-frame__state{color:#b7b7b7;background:#121212}.surface-student .youtube-frame__state--error strong{color:#fff;font-family:inherit;font-weight:680}.surface-student .youtube-frame__spinner{border-color:#fff #444 #444}.surface-student .lesson-description{background:#1f1f1f;border-color:#333;border-radius:14px}.surface-student .lesson-description__content{border-color:#333}.surface-student .lesson-description__content p,.surface-student .lesson-description__content li{color:#b7b7b7}.surface-student .lesson-description__content h2{font-family:inherit;font-weight:680}.surface-student .more-heading{margin:0 0 16px}.surface-student .more-heading .eyebrow{color:#b7b7b7}.surface-student .profile-hero--compact{border-radius:16px;padding:16px}.surface-student .profile-hero--compact .avatar--large{flex-basis:62px;width:62px;height:62px}.surface-student .profile-hero--compact h2{font-family:inherit;font-weight:680}.surface-student .profile-metrics--compact .card,.surface-student .level-progress--compact{background:#1f1f1f;border-radius:16px}.surface-student .profile-metrics svg{color:#fff}.surface-student .profile-menu--compact{background:#1f1f1f;border-color:#333;border-radius:16px}.surface-student .profile-menu button{color:#fff;border-color:#333}.surface-student .profile-menu__icon{color:#fff;background:#2b2b2b;border-color:#3d3d3d}.surface-student .bottom-nav{min-height:74px;padding:6px calc(12px + var(--app-safe-right)) calc(6px + var(--app-safe-bottom)) calc(12px + var(--app-safe-left));backdrop-filter:none;background:#000;border-top:0}.surface-student .bottom-nav button{color:#fff;letter-spacing:.02em;text-transform:uppercase;background:0 0;border-radius:0;gap:2px;min-height:58px;font-size:.58rem;font-weight:680}.surface-student .bottom-nav button.active{color:#fff;background:0 0}.surface-student .bottom-nav__icon{color:#fff;place-items:center;width:40px;height:34px;display:grid}.surface-student .bottom-nav button.active .bottom-nav__icon{color:#000;clip-path:polygon(50% 0,85% 26%,85% 100%,15% 100%,15% 26%);background:#fff}.surface-student .sheet-backdrop{backdrop-filter:blur(3px);background:#000c}.surface-student .bottom-sheet{padding-right:calc(24px + var(--app-safe-right));padding-bottom:calc(22px + var(--app-safe-bottom));padding-left:calc(24px + var(--app-safe-left));background:#121212;border-color:#333;border-radius:22px 22px 0 0;box-shadow:0 -16px 48px #000000b3}.surface-student .bottom-sheet__header h2,.surface-student .payment-pending h3{font-family:inherit;font-weight:680}.surface-student .access-summary{background:#1f1f1f}.surface-student .access-summary strong{color:#fff}.surface-student .payment-option{background:#1f1f1f;border-color:#333;border-radius:14px}.surface-student .payment-pending__icon{color:#fff;background:#1f1f1f}.surface-student .toast{color:#fff;background:#1f1f1f;border-color:#454545;box-shadow:0 12px 30px #00000085}.surface-student .message-state{background:#1f1f1f;border-radius:16px}.surface-student .message-state__icon{color:#fff;background:#333}.surface-student .message-state h2{font-family:inherit;font-weight:680}.surface-student .skeleton{background:#2a2a2a}.surface-student .skeleton:after{background:linear-gradient(90deg,#0000,#3b3b3b,#0000)}@media (width<=380px){.surface-student .profile-bar--compact{padding-right:calc(18px + var(--app-safe-right));padding-left:calc(18px + var(--app-safe-left))}.surface-student .points-pill{min-width:80px;padding:0 10px}.surface-student .course-cover{margin-right:calc(18px + var(--app-safe-right));margin-left:calc(18px + var(--app-safe-left))}.surface-student .course-cover__copy{width:58%;padding:12px}.surface-student .course-cover__copy h1{font-size:1.06rem}.surface-student .course-cover__copy>span{-webkit-line-clamp:2}.surface-student .course-cover__action{min-height:30px;padding:0 10px}.surface-student .course-progress{margin-right:calc(18px + var(--app-safe-right));margin-left:calc(18px + var(--app-safe-left))}.surface-student .materials-section,.surface-student .mini-app:not(.mini-app--detail) .profile-screen{padding-right:calc(18px + var(--app-safe-right));padding-left:calc(18px + var(--app-safe-left))}.surface-student .category-filter--compact{margin-right:calc(-18px - var(--app-safe-right));margin-left:calc(-18px - var(--app-safe-left));padding-right:calc(18px + var(--app-safe-right));padding-left:calc(18px + var(--app-safe-left))}.surface-student .lesson-card--compact{grid-template-columns:96px minmax(0,1fr)}.surface-student .lesson-card--compact .lesson-card__body{padding:10px 9px}.surface-student .lesson-card__pill{padding-left:5px;padding-right:5px;font-size:.54rem}.surface-student .lesson-card__actions{gap:3px}.surface-student .mini-app--detail{padding-right:calc(18px + var(--app-safe-right));padding-left:calc(18px + var(--app-safe-left))}}