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minmax(0,1fr);align-items:start}.profile-avatar{display:grid;place-items:center;width:72px;height:72px;border:1px solid rgba(16,163,127,.32);border-radius:50%;background:rgba(16,163,127,.1);color:#a8f5dc;font-weight:800}.info-row{grid-template-columns:minmax(120px,.4fr) minmax(0,1fr)}.info-row span{color:var(--muted)}.info-row strong{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.danger-panel{border-color:rgba(255,138,61,.28);background:rgba(255,138,61,.06)}.payment-status{display:flex;justify-content:space-between;gap:18px;align-items:center}.status-ring{display:grid;place-items:center;flex:0 0 auto;width:92px;height:92px;border:1px solid var(--line);border-radius:50%;color:var(--muted)}.status-ring.paid{border-color:rgba(16,163,127,.42);background:rgba(16,163,127,.1);color:#a8f5dc}.status-ring strong{font-size:.9rem}.payment-offer-card{display:grid;grid-gap:4px;gap:4px;flex:0 0 190px;padding:16px;border:1px solid rgba(70,100,255,.28);border-radius:var(--radius-sm);background:linear-gradient(135deg,rgba(70,100,255,.1),rgba(47,140,255,.08));color:var(--text);text-decoration:none;box-shadow:0 16px 36px rgba(70,100,255,.12)}.payment-offer-card:hover{border-color:rgba(70,100,255,.48);transform:translateY(-1px)}.payment-offer-card small,.payment-offer-card span{color:var(--muted)}.payment-offer-card strong{color:var(--blue);font-size:1.45rem}.payment-action-stack{display:grid;grid-gap:10px;gap:10px;flex:0 0 260px}.payment-action-stack .payment-offer-card{width:100%}.redeem-form{display:grid;grid-gap:7px;gap:7px;padding:12px;border:1px solid rgba(70,100,255,.22);border-radius:var(--radius-sm);background:rgba(70,100,255,.06)}.redeem-form label{color:var(--muted);font-size:.82rem;font-weight:760}.redeem-form>div{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-gap:8px;gap:8px}.redeem-form input{min-width:0;height:38px;padding:0 11px;border:1px solid var(--line);border-radius:var(--radius-sm);background:hsla(0,0%,100%,.94);color:var(--text);font:inherit}.redeem-form input:focus{outline:2px solid rgba(70,100,255,.28);border-color:rgba(70,100,255,.5)}.redeem-form .button{min-height:38px;padding-inline:12px;white-space:nowrap}.redeem-message{margin:0;font-size:.84rem;line-height:1.35}.redeem-message.success{color:var(--blue)}.redeem-message.error{color:var(--danger)}.activity-panel a,.level-row,.order-row,.payment-meta{display:grid;align-items:center}.payment-meta{grid-template-columns:1fr auto;gap:10px;margin:14px 0;padding:10px 0;border-block:1px solid var(--line)}.order-row span,.payment-meta span{color:var(--muted)}.order-list{display:grid;grid-gap:8px;gap:8px}.order-row{grid-template-columns:24px minmax(0,1fr) auto;gap:10px;min-height:52px;padding:9px 0;border-bottom:1px solid hsla(0,0%,100%,.06)}.order-row:last-child{border-bottom:0}.order-row svg{color:var(--green)}.order-row div{display:grid;grid-gap:2px;gap:2px;min-width:0}.order-row div:last-child{text-align:right}.order-row span,.order-row strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.activity-panel{display:grid;align-content:start;grid-gap:10px;gap:10px}.activity-panel a{grid-template-columns:24px minmax(0,1fr);gap:8px;min-height:34px;color:var(--text)}.activity-panel a svg{color:var(--green)}.activity-panel a span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.level-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:10px 24px;gap:10px 24px;margin-top:14px}.level-row{grid-template-columns:68px minmax(0,1fr) minmax(120px,.7fr) 44px;gap:10px;min-height:36px}.level-row small,.level-row span{color:var(--muted);font-size:.82rem}.level-row strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.modal-backdrop{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:18px;background:rgba(0,0,0,.72);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.modal-panel{width:min(94vw,460px);max-height:min(720px,88vh);overflow:auto;border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow)}.modal-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 16px 10px}.modal-header h2{margin:0;font-size:1.25rem;line-height:1.25}.icon-button{width:34px;height:34px;border:1px solid var(--line);border-radius:var(--radius);background:hsla(0,0%,100%,.03);color:var(--muted)}.modal-copy{margin:0;padding:0 16px 14px;line-height:1.55}.qr-panel{display:grid;place-items:center;padding:8px 16px 16px}.contact-qr-fallback,.fake-qr,.qr-image-frame,.qr-loading,.qr-panel img{width:224px;border-radius:var(--radius)}.fake-qr,.qr-image-frame,.qr-loading,.qr-panel img{height:224px}.qr-panel img{background:#fff}.qr-image-frame{position:relative;display:grid;place-items:center;overflow:hidden;border:1px solid var(--line);background:#fff}.qr-image-frame img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;opacity:0;transition:opacity .16s ease}.qr-image-frame img.is-loaded{opacity:1}.qr-loading{display:grid;place-items:center;align-content:center;grid-gap:12px;gap:12px;border:1px solid var(--line);background:linear-gradient(135deg,rgba(70,100,255,.08),rgba(47,140,255,.04));color:var(--blue);text-align:center}.qr-loading.compact{position:absolute;inset:0;width:100%;height:100%;border:0;border-radius:0}.qr-loading strong{padding-inline:14px;font-size:.92rem;line-height:1.35}.qr-spinner{width:34px;height:34px;border:3px solid rgba(70,100,255,.18);border-top:3px solid var(--blue);border-radius:999px;animation:qr-spin .82s linear infinite}@keyframes shimmer{to{background-position:-200% 0}}@keyframes qr-spin{to{transform:rotate(1turn)}}.fake-qr{position:relative;display:grid;grid-template-columns:repeat(7,1fr);grid-template-rows:repeat(7,1fr);grid-gap:5px;gap:5px;padding:16px;border:1px solid var(--line);background:#f7faf8}.fake-qr span{border-radius:2px;background:#dbe4df}.fake-qr span.filled{background:#0a1210}.fake-qr strong{position:absolute;inset:50% auto auto 50%;transform:translate(-50%,-50%);min-width:78px;padding:7px 9px;border-radius:var(--radius);background:#f7faf8;color:#0a1210;text-align:center;font-size:.8rem}.contact-qr-fallback{display:grid;grid-gap:9px;gap:9px;justify-items:center;padding:12px;border:1px solid var(--line-strong);background:#fff;text-align:center}.contact-qr-fallback img,.contact-qr-missing{width:176px;height:176px;border-radius:var(--radius)}.contact-qr-fallback img{object-fit:contain}.contact-qr-missing{display:grid;place-items:center;border:1px dashed var(--line-strong);background:rgba(70,100,255,.08);color:var(--blue);font-weight:760}.contact-qr-fallback strong{color:var(--danger);font-size:1rem}.contact-qr-fallback span{color:var(--muted);font-size:.9rem;line-height:1.4}.notice{display:grid;grid-gap:6px;gap:6px;margin:0 16px 14px;padding:12px;border:1px solid rgba(255,138,61,.32);border-radius:var(--radius);background:rgba(255,138,61,.08);color:#ffd5bd;line-height:1.45}.notice span{color:var(--muted);font-size:.9rem}.notice.success{border-color:rgba(70,100,255,.28);background:rgba(70,100,255,.08);color:var(--blue)}.modal-actions{justify-content:flex-end;gap:10px;padding:0 16px 16px}.lesson-terminal{margin:0 16px 16px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(0,0,0,.24)}.lesson-page{min-height:100vh;overflow-x:hidden;background:radial-gradient(circle at 18% 0,rgba(16,163,127,.13),transparent 28rem),linear-gradient(hsla(0,0%,100%,.025) 1px,transparent 1px),linear-gradient(90deg,hsla(0,0%,100%,.025) 1px,transparent 1px),var(--bg);background-size:auto,36px 36px,36px 36px}.lesson-page.accent-orange{background:radial-gradient(circle at 18% 0,rgba(255,138,61,.13),transparent 28rem),linear-gradient(hsla(0,0%,100%,.025) 1px,transparent 1px),linear-gradient(90deg,hsla(0,0%,100%,.025) 1px,transparent 1px),var(--bg);background-size:auto,36px 36px,36px 36px}.lesson-page.accent-blue{background:radial-gradient(circle at 18% 0,rgba(91,167,255,.13),transparent 28rem),linear-gradient(hsla(0,0%,100%,.025) 1px,transparent 1px),linear-gradient(90deg,hsla(0,0%,100%,.025) 1px,transparent 1px),var(--bg);background-size:auto,36px 36px,36px 36px}.lesson-header{position:-webkit-sticky;position:sticky;top:0;z-index:35;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px clamp(16px,4vw,44px);border-bottom:1px solid var(--line);background:rgba(8,10,11,.9);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.lesson-header-actions{display:flex;align-items:center;gap:8px}.lesson-shell{display:grid;grid-template-columns:280px minmax(0,1fr);grid-gap:24px;gap:24px;max-width:1180px;width:100%;margin:0 auto;padding:26px clamp(16px,4vw,44px) 54px}.lesson-sidebar{position:-webkit-sticky;position:sticky;top:91px;align-self:start;display:grid;grid-template-rows:auto minmax(0,1fr);grid-gap:12px;gap:12px;min-height:0;height:calc(100vh - 112px);max-height:calc(100vh - 112px);overflow:hidden}.lesson-block,.lesson-hero-card,.lesson-nav-card,.lesson-progress-card,.locked-panel{border:1px solid var(--line);border-radius:var(--radius);background:rgba(18,22,24,.88)}.lesson-progress-card{display:grid;grid-gap:9px;gap:9px;padding:14px}.lesson-progress-card span{color:var(--muted);font-size:.86rem}.lesson-progress-card strong{font-size:1.35rem}.mini-map{display:grid;grid-gap:5px;gap:5px;overflow:auto;min-height:0;overscroll-behavior:auto;padding-right:4px}.mini-map a{display:grid;grid-template-columns:36px minmax(0,1fr);grid-gap:8px;gap:8px;align-items:center;min-height:38px;padding:7px 9px;border:1px solid transparent;border-radius:var(--radius);color:var(--muted);background:hsla(0,0%,100%,.025)}.mini-map a.active,.mini-map a:hover{border-color:var(--line-strong);color:var(--text);background:hsla(0,0%,100%,.055)}.mini-map a.done span{color:var(--green)}.mini-map span{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.78rem}.mini-map small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lesson-content{display:grid;align-content:start;grid-gap:14px;gap:14px;min-width:0}.lesson-hero-card{padding:clamp(18px,4vw,34px)}.lesson-kicker{display:flex;flex-wrap:wrap;gap:8px;align-items:center;color:var(--muted);font-size:.9rem}.pill{display:inline-flex;align-items:center;min-height:26px;padding:0 9px;border-radius:999px;font-weight:720}.pill.free{background:rgba(16,163,127,.12);color:#8af2d0}.pill.paid{background:rgba(255,138,61,.13);color:#ffc7a6}.lesson-hero-card h1{margin:14px 0 10px;font-size:clamp(2rem,5vw,4.1rem);line-height:1;letter-spacing:0}.lesson-hero-card p{max-width:760px;margin:0;color:var(--muted);font-size:1.05rem;line-height:1.65}.lesson-block{padding:18px}.block-title{display:flex;align-items:center;gap:10px;color:var(--green)}.accent-orange .block-title{color:var(--orange)}.accent-blue .block-title{color:var(--blue)}.block-title h2{margin:0;font-size:1.15rem}.lesson-block ol,.lesson-block ul{display:grid;grid-gap:10px;gap:10px;margin:14px 0 0;padding:0;list-style:none;color:var(--text)}.lesson-block li{position:relative;padding-left:24px;color:var(--muted);line-height:1.55}.lesson-block li:before{position:absolute;left:0;top:.58em;width:8px;height:8px;border-radius:50%;background:var(--green);content:""}.accent-orange .lesson-block li:before{background:var(--orange)}.accent-blue .lesson-block li:before{background:var(--blue)}.terminal-block pre{overflow:auto;margin:16px 0 0;padding:16px;background:rgba(0,0,0,.28);color:#d6f6e8;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.7}.lesson-player,.terminal-block pre{border:1px solid var(--line);border-radius:var(--radius)}.lesson-player{display:grid;grid-gap:14px;gap:14px;background:rgba(18,22,24,.88);overflow:hidden}.lesson-stepper{display:grid;grid-gap:12px;gap:12px;padding:14px 14px 0}.lesson-stepper-track{height:8px;overflow:hidden;border-radius:999px;background:hsla(0,0%,100%,.08)}.lesson-stepper-track span{display:block;height:100%;border-radius:inherit;background:var(--green);transition:width .18s ease}.accent-orange .lesson-stepper-track span{background:var(--orange)}.accent-blue .lesson-stepper-track span{background:var(--blue)}.lesson-stepper-buttons{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:8px;gap:8px}.lesson-stepper-buttons button{display:flex;align-items:center;gap:9px;min-width:0;min-height:54px;padding:8px 10px;border:1px solid var(--line);border-radius:var(--radius);background:hsla(0,0%,100%,.035);color:var(--muted);text-align:left}.lesson-stepper-buttons button.active,.lesson-stepper-buttons button.done{border-color:var(--line-strong);background:hsla(0,0%,100%,.075);color:var(--text)}.lesson-stepper-buttons button:disabled{opacity:.46}.lesson-stepper-buttons small,.lesson-stepper-buttons strong{display:block;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lesson-stepper-buttons strong{font-size:.9rem}.lesson-stepper-buttons small{margin-top:2px;color:var(--faint);font-size:.74rem}.lesson-stage{display:grid;grid-gap:14px;gap:14px;padding:clamp(18px,4vw,30px)}.stage-label{display:inline-flex;align-items:center;gap:7px;width:max-content;min-height:26px;padding:0 9px;border-radius:999px;background:hsla(0,0%,100%,.06);color:var(--muted);font-size:.88rem}.lesson-stage h2{margin:0;font-size:clamp(1.8rem,4vw,3.05rem);line-height:1.05;letter-spacing:0}.lesson-stage h3{margin:0;font-size:1.08rem}.lesson-stage p,.stage-lead{max-width:850px;margin:0;color:var(--muted);line-height:1.65}.concept-callout{display:grid;grid-template-columns:28px minmax(0,1fr);grid-gap:10px;gap:10px;max-width:860px;padding:14px;border:1px solid rgba(91,167,255,.2);border-radius:var(--radius);background:rgba(91,167,255,.08);color:#dfeeff}.concept-video{display:grid;grid-gap:9px;gap:9px;max-width:860px;margin:0}.concept-video video{width:100%;aspect-ratio:16/9;border:1px solid rgba(70,100,255,.2);border-radius:18px;background:#071225;box-shadow:0 22px 46px rgba(15,23,42,.12)}.concept-video figcaption{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--faint);font-size:.88rem}.concept-video figcaption strong{color:var(--muted)}.concept-callout strong{display:block;margin-bottom:4px;color:var(--blue)}.key-point-list{display:grid;grid-gap:9px;gap:9px;margin:0;padding:0;list-style:none}.key-point-list li{display:grid;grid-template-columns:32px minmax(0,1fr);grid-gap:10px;gap:10px;align-items:start}.key-point-list li>span{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--radius);background:rgba(16,163,127,.12);color:var(--green);font-weight:760}.accent-orange .key-point-list li>span{background:rgba(255,138,61,.13);color:var(--orange)}.accent-blue .key-point-list li>span{background:rgba(91,167,255,.13);color:var(--blue)}.example-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:10px;gap:10px}.example-card{display:grid;grid-gap:8px;gap:8px;align-content:start;min-height:116px;padding:13px;border:1px solid var(--line);border-radius:var(--radius);background:hsla(0,0%,100%,.035);color:var(--text);text-align:left}.example-card span{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:var(--radius);background:#fff;color:var(--blue)}.example-card strong{min-width:0;overflow-wrap:anywhere}.example-card small{color:var(--faint)}.example-card.active{border-color:rgba(70,100,255,.5);background:rgba(70,100,255,.07);box-shadow:inset 0 0 0 1px rgba(70,100,255,.22)}.example-card.pending span{border:2px solid rgba(70,100,255,.72);background:#fff;color:transparent}.example-card.pending.active span{color:transparent;border-color:var(--blue);box-shadow:0 0 0 4px rgba(70,100,255,.11)}.example-card.opened{border-color:rgba(16,163,127,.45);background:rgba(16,163,127,.08)}.example-card.opened span{background:var(--green);border-color:transparent;color:#03110d}.accent-orange .example-card.opened{border-color:rgba(255,138,61,.45);background:rgba(255,138,61,.09)}.accent-orange .example-card.opened span{background:var(--orange);color:#180803}.accent-blue .example-card.opened{border-color:rgba(91,167,255,.45);background:rgba(91,167,255,.09)}.accent-blue .example-card.opened span{background:var(--blue);color:#03101d}.example-detail,.test-card{display:grid;grid-gap:12px;gap:12px;padding:16px;border:1px solid var(--line);border-radius:var(--radius);background:hsla(0,0%,100%,.035)}.example-detail pre{overflow:auto;margin:0;padding:13px;border-radius:var(--radius);background:rgba(0,0,0,.28);color:#d6f6e8;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}.command-variants{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));grid-gap:10px;gap:10px}.command-variant{display:grid;grid-gap:6px;gap:6px;min-width:0}.command-variant>span{justify-self:start;padding:4px 8px;border:1px solid rgba(70,100,255,.22);border-radius:999px;background:rgba(70,100,255,.08);color:var(--blue);font-size:.76rem;font-weight:800}.command-variant code{white-space:pre-wrap;overflow-wrap:anywhere}.operation-steps{display:grid;grid-gap:8px;gap:8px;padding:13px;border-radius:var(--radius);background:rgba(70,100,255,.07)}.operation-steps ol{display:grid;grid-gap:7px;gap:7px;margin:0;padding-left:22px;color:var(--muted);line-height:1.55}.operation-steps li::marker{color:var(--blue);font-weight:760}.example-progress{display:grid;grid-template-columns:minmax(0,1fr) auto;grid-gap:12px;gap:12px;align-items:center}.example-progress:before{background:hsla(0,0%,100%,.08);content:""}.example-progress span,.example-progress:before{grid-column:1;grid-row:1;height:8px;border-radius:999px}.example-progress span{display:block;background:var(--green)}.example-progress small{color:var(--muted);white-space:nowrap}.test-blueprint{display:grid;grid-gap:12px;gap:12px;padding:16px;border:1px solid rgba(70,100,255,.2);border-radius:var(--radius);background:rgba(70,100,255,.06)}.test-blueprint p{margin:0;color:var(--muted);line-height:1.6}.blueprint-grid{display:grid;grid-gap:8px;gap:8px}.blueprint-row{display:grid;grid-template-columns:34px minmax(0,1fr) auto;grid-gap:10px;gap:10px;align-items:center;padding:10px;border:1px solid rgba(70,100,255,.16);border-radius:12px;background:hsla(0,0%,100%,.78)}.blueprint-row strong{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:9px;background:rgba(70,100,255,.12);color:var(--blue);font-weight:850}.blueprint-row span{min-width:0;color:var(--text);font-weight:700;overflow-wrap:anywhere}.blueprint-row small{padding:5px 8px;border-radius:999px;background:rgba(70,100,255,.1);color:var(--blue);font-weight:800;white-space:nowrap}@media (max-width:720px){.blueprint-row{grid-template-columns:30px minmax(0,1fr)}.blueprint-row small{grid-column:2;justify-self:start;white-space:normal}}.quiz-options{display:grid;grid-gap:8px;gap:8px}.quiz-option{display:grid;grid-template-columns:44px minmax(0,1fr);align-items:center;min-height:50px;border:1px solid var(--line);border-radius:var(--radius);background:hsla(0,0%,100%,.035);color:var(--text);text-align:left;overflow:hidden}.quiz-option 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