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svg{max-width:min(340px,100%);height:auto;display:block}.sr-quiz-prompt{color:var(--sr-ink);margin-bottom:14px;font-size:15px;line-height:1.55}.sr-quiz-options{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.sr-quiz-opt{text-align:left;cursor:pointer;background:var(--sr-card);width:100%;color:var(--sr-ink);border:1px solid var(--sr-line);border-radius:var(--sr-radius-sm);align-items:center;gap:8px;padding:10px 12px;font-size:14.5px;display:flex}.sr-quiz-opt:hover:not(:disabled){border-color:var(--sr-blue);background:var(--sr-blue-tint)}.sr-quiz-opt:disabled{cursor:default}.sr-quiz-opt.correct{border-color:var(--sr-green);background:var(--sr-green-tint);color:var(--sr-green-deep);font-weight:600}.sr-quiz-opt.correct svg{color:var(--sr-green-deep);margin-left:auto}.sr-quiz-opt.wrong{border-color:var(--sr-ink-dim);background:var(--sr-panel);color:var(--sr-ink);font-weight:600}.sr-quiz-opt.wrong svg{color:var(--sr-ink-soft);margin-left:auto}.sr-quiz-opt.picking{border-color:var(--sr-blue);background:var(--sr-blue-tint)}.sr-quiz-opt.dim{opacity:.45}.sr-quiz-opt-text{flex:1}.sr-quiz-feedback{border-top:1px solid var(--sr-line-soft);margin-top:14px;padding-top:12px}.sr-quiz-verdict{border-radius:var(--sr-radius-sm);align-items:center;gap:6px;margin-bottom:12px;padding:8px 10px;font-size:14px;font-weight:600;display:flex}.sr-quiz-verdict.ok{color:var(--sr-green-deep);background:var(--sr-green-tint)}.sr-quiz-verdict.bad{color:var(--sr-ink);background:var(--sr-panel)}.sr-quiz-answer{color:var(--sr-ink-soft);border-left:2px solid var(--sr-green);padding-left:10px;font-size:14px;line-height:1.55}.sr-quiz-work{color:var(--sr-ink-soft);text-align:center;border:1px dashed var(--sr-line);border-radius:var(--sr-radius-sm);flex-direction:column;align-items:center;gap:10px;padding:22px 12px;font-size:13.5px;display:flex}.sr-quiz-input{gap:8px;margin-top:12px;display:flex}.sr-quiz-input-field{min-width:0;font-size:15px;font-family:var(--sr-mono);color:var(--sr-ink);background:var(--sr-white);border:1px solid var(--sr-line);border-radius:var(--sr-radius-sm);flex:1;padding:10px 12px}.sr-quiz-input-field:focus{outline:2px solid var(--sr-blue);outline-offset:1px;border-color:var(--sr-blue)}.sr-quiz-input-field.correct{border-color:var(--sr-green);background:var(--sr-green-tint)}.sr-quiz-input-field.wrong{border-color:var(--sr-ink-dim);background:var(--sr-panel)}.sr-quiz-login,.sr-quiz-empty{color:var(--sr-ink-soft);padding:20px 6px;font-size:14px}.sr-quiz-login p{margin-bottom:12px}.sr-quiz-foot{border-top:1px solid var(--sr-line-soft);justify-content:space-between;align-items:center;gap:10px;padding:12px 14px;display:flex}.sr-quiz-end{flex:none}.sr-quiz-end svg,.sr-quiz-gate-actions .sr-btn svg{vertical-align:-2px;margin-right:4px}.sr-quiz-gate{padding:6px 4px 4px}.sr-quiz-gate-note{color:var(--sr-ink-soft);padding:8px 2px 2px;font-size:14px;line-height:1.6}.sr-quiz-gate-actions{gap:10px;margin-top:16px;display:flex}.sr-quiz-gate-actions .sr-btn{flex:1;justify-content:center}.sr-score{border:1px solid var(--sr-line);border-radius:var(--sr-radius);background:var(--sr-card);padding:16px}.sr-score-title{font-family:var(--sr-display);color:var(--sr-ink-soft);font-size:14px;font-weight:600}.sr-score-hero{align-items:baseline;gap:12px;margin:8px 0 12px;display:flex}.sr-score-pct{font-family:var(--sr-mono);color:var(--sr-green-deep);font-size:34px;font-weight:600;line-height:1}.sr-score-ratio{color:var(--sr-ink);font-size:15px;font-weight:600}.sr-score-lines{flex-direction:column;gap:6px;display:flex}.sr-score-line{color:var(--sr-ink-soft);border-top:1px solid var(--sr-line-soft);padding-top:8px;font-size:13.5px;line-height:1.6}.sr-score-line:first-child{border-top:0;padding-top:0}.sr-score-wrong{color:var(--sr-ink);font-weight:600}.sr-login{flex-direction:column;gap:14px;max-width:340px;margin:24px auto 0;display:flex}.sr-login-lead{color:var(--sr-ink-soft);font-size:14px}.sr-login-field{color:var(--sr-ink-soft);flex-direction:column;gap:5px;font-size:13px;display:flex}.sr-login-field input{color:var(--sr-ink);background:var(--sr-white);border:1px solid var(--sr-line);border-radius:var(--sr-radius-sm);padding:9px 11px;font-size:14px}.sr-login-field input:focus{outline:2px solid var(--sr-blue);outline-offset:1px;border-color:var(--sr-blue)}.sr-login-error{color:var(--sr-green-deep);font-size:13px}.sr-login-submit{align-self:stretch;margin-top:4px}.sr-auth{background:var(--sr-panel);width:100vw;min-height:100dvh;color:var(--sr-ink);font-family:var(--sr-body);justify-content:center;align-items:center;padding:24px;display:flex}.sr-auth-card{background:var(--sr-white);border:1px solid var(--sr-line);border-radius:var(--sr-radius);width:100%;max-width:380px;padding:26px 28px 30px;box-shadow:0 8px 30px #143c420f}.sr-auth-brand{align-items:center;gap:10px;display:flex}.sr-auth-title{font-family:var(--sr-display);margin:16px 0 2px;font-size:20px;font-weight:700}.sr-auth .sr-login{max-width:none;margin:6px 0 0}.sr-usermenu{border-top:1px solid var(--sr-line);flex:none;padding:8px;position:relative}.sr-usermenu-trigger{cursor:pointer;text-align:left;width:100%;color:var(--sr-ink);background:0 0;border:0;border-radius:8px;align-items:center;gap:9px;padding:7px 8px;display:flex}.sr-usermenu-trigger:hover,.sr-usermenu-trigger.open{background:var(--sr-panel)}.sr-avatar{background:var(--sr-blue-tint);width:28px;height:28px;color:var(--sr-blue-deep);border-radius:999px;flex:none;place-items:center;font-size:13px;font-weight:700;display:grid}.sr-usermenu-name{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:13px;font-weight:600;overflow:hidden}.sr-usermenu-caret{color:var(--sr-ink-dim);flex:none;transition:transform .15s}.sr-usermenu-trigger.open .sr-usermenu-caret{transform:rotate(180deg)}.sr-usermenu-pop{background:var(--sr-card);border:1px solid var(--sr-line);z-index:30;border-radius:10px;padding:5px;position:absolute;bottom:calc(100% - 2px);left:8px;right:8px;box-shadow:0 8px 28px #15201f24,0 1px 3px #15201f14}.sr-usermenu-label{letter-spacing:.03em;color:var(--sr-ink-dim);align-items:center;gap:6px;padding:5px 9px 3px;font-size:11px;font-weight:700;display:flex}.sr-usermenu-item{width:100%;color:var(--sr-ink-soft);cursor:pointer;text-align:left;background:0 0;border:0;border-radius:7px;justify-content:space-between;align-items:center;gap:8px;padding:7px 9px;font-size:13px;display:flex}.sr-usermenu-item>:first-child{align-items:center;gap:8px;display:inline-flex}.sr-usermenu-item:hover{background:var(--sr-panel);color:var(--sr-ink)}.sr-usermenu-item.active{color:var(--sr-blue-deep);font-weight:600}.sr-usermenu-item.active:hover{background:var(--sr-blue-tint)}.sr-usermenu-sep{background:var(--sr-line);height:1px;margin:5px 4px}.sr-quiz-err{color:var(--sr-ink);background:var(--sr-panel);border:1px solid var(--sr-line);border-radius:var(--sr-radius-sm);margin-top:12px;padding:8px 10px;font-size:13px}.sr-hero{margin-bottom:22px;padding:4px 0 2px}.sr-hero-title{max-width:30ch;font-family:var(--sr-display);letter-spacing:-.02em;color:var(--sr-ink);margin:8px 0 10px;font-size:27px;font-weight:700;line-height:1.25}.sr-hero-strike{color:var(--sr-ink-dim);text-decoration:line-through;text-decoration-thickness:1.5px}.sr-hero-dim{color:var(--sr-ink-dim)}.sr-hero-hl{color:var(--sr-blue-deep)}.sr-hero-hl.green{color:var(--sr-green-deep)}.sr-hero-sub{max-width:44ch;color:var(--sr-ink-soft);font-size:14.5px;line-height:1.6}.sr-hero{background:var(--sr-blue-tint);border:1px solid var(--sr-line);border-radius:14px;align-items:center;gap:24px;margin-bottom:18px;padding:22px 26px;display:flex}.sr-hero-copy{flex:1;min-width:0}.sr-hero-badge{letter-spacing:.02em;color:var(--sr-blue-deep);background:var(--sr-card);border:1px solid var(--sr-line);border-radius:999px;margin-bottom:12px;padding:3px 10px;font-size:11.5px;font-weight:700;display:inline-block}.sr-hero-title{font-family:var(--sr-display);color:var(--sr-ink);margin:0 0 9px;font-size:27px;font-weight:800;line-height:1.18}.sr-hero-accent{color:var(--sr-blue)}.sr-hero-desc{color:var(--sr-ink-soft);max-width:48ch;margin:0;font-size:14px;line-height:1.6}.sr-hero-art{flex:none;width:208px;height:auto}@media (width<=640px){.sr-hero{flex-direction:column;align-items:flex-start;gap:14px;padding:18px}.sr-hero-title{font-size:22px}.sr-hero-art{align-self:center;width:168px}}.sr-learn{grid-template-columns:1fr 1fr;align-items:start;gap:20px;display:grid}.sr-learn-principle{order:1;min-width:0}.sr-learn-courses{order:2;min-width:0}.sr-learn-title{font-family:var(--sr-display);letter-spacing:-.01em;color:var(--sr-ink);margin:2px 0 6px;font-size:18px;font-weight:700;line-height:1.3}.sr-learn-sub{color:var(--sr-ink-soft);margin:0 0 14px;font-size:13px;line-height:1.55}.sr-learn-hero{border:1px solid var(--sr-green);background:var(--sr-green-tint);border-radius:var(--sr-radius-sm);margin-bottom:12px;padding:12px 13px}.sr-learn-hero-head{color:var(--sr-green-deep);align-items:center;gap:8px;margin-bottom:5px;display:flex}.sr-learn-hero-head b{font-family:var(--sr-display);font-size:14px;font-weight:700}.sr-learn-hero p{color:var(--sr-ink-soft);margin:0;font-size:12.5px;line-height:1.6}.sr-learn-list{flex-direction:column;gap:11px;margin:0;padding:0;list-style:none;display:flex}.sr-learn-list li{align-items:flex-start;gap:10px;display:flex}.sr-learn-ic{background:var(--sr-blue-tint);width:28px;height:28px;color:var(--sr-blue-deep);border-radius:8px;flex:none;place-items:center;display:grid}.sr-learn-item-body{flex-direction:column;gap:1px;min-width:0;display:flex}.sr-learn-item-body b{color:var(--sr-ink);font-size:13px;font-weight:700}.sr-learn-item-body span{color:var(--sr-ink-soft);font-size:12.5px;line-height:1.5}@media (width<=760px){.sr-learn{grid-template-columns:1fr;gap:16px}.sr-learn-courses{order:1}.sr-learn-principle{order:2}}.sr-lesson-card{color:inherit;align-items:center;gap:12px;text-decoration:none;display:flex}.sr-lesson-card:hover{border-color:var(--sr-blue)}.sr-lesson-card-ico{background:var(--sr-blue-tint);width:34px;height:34px;color:var(--sr-blue-deep);border-radius:8px;flex:none;place-items:center;display:grid}.sr-lesson-card-body{flex-direction:column;gap:1px;min-width:0;display:flex}.sr-lesson-card-body .sr-card-title{margin:0}.sr-brand-img{border-radius:10px;flex:none;width:44px;height:44px;display:block}.sr-progress{background:var(--sr-card);border:1px solid var(--sr-line);border-radius:var(--sr-radius);padding:16px}.sr-progress-top{justify-content:space-between;align-items:baseline;margin-bottom:10px;display:flex}.sr-progress-title{font-family:var(--sr-display);font-size:15px;font-weight:600}.sr-progress-pct{font-family:var(--sr-mono);color:var(--sr-green-deep);font-size:16px;font-weight:600}.sr-progress-pct span{color:var(--sr-ink-dim);font-size:12px}.sr-progress-bar{background:var(--sr-line-soft);border-radius:999px;height:8px;overflow:hidden}.sr-progress-bar>span{background:var(--sr-green);border-radius:999px;height:100%;display:block}.sr-progress-stats{grid-template-columns:repeat(2,1fr);gap:10px;margin-top:15px;display:grid}.sr-progress-stat{flex-direction:column;gap:1px;display:flex}.sr-progress-stat b{font-family:var(--sr-mono);color:var(--sr-ink);font-size:20px;font-weight:600}.sr-progress-stat span{color:var(--sr-ink-dim);font-size:11.5px}.sr-read-modes{border:1px solid var(--sr-line);border-radius:var(--sr-radius);background:var(--sr-panel);gap:4px;width:calc(100% - 40px);max-width:380px;margin:16px 20px 0;padding:4px;display:flex}.sr-read-mode{border-radius:var(--sr-radius-sm);color:var(--sr-ink-soft);cursor:pointer;font-family:var(--sr-display);white-space:nowrap;background:0 0;border:0;flex:1;padding:7px 16px;font-size:13.5px;font-weight:600;transition:background .15s,color .15s}.sr-read-mode:hover{color:var(--sr-ink)}.sr-read-mode.active{background:var(--sr-blue);color:#fff}.sr-card-reader{max-width:820px;margin:0 auto;padding:18px 20px 8px}.sr-card-head{border-bottom:1px solid var(--sr-line-soft);justify-content:space-between;align-items:baseline;gap:12px;margin-bottom:14px;padding-bottom:12px;display:flex}.sr-card-titles{flex-direction:column;gap:2px;min-width:0;display:flex}.sr-card-lesson{font-family:var(--sr-display);letter-spacing:-.01em;color:var(--sr-ink);min-width:0;font-size:18px;font-weight:600}.sr-card-section{font-family:var(--sr-body);color:var(--sr-blue);min-width:0;font-size:15px;font-weight:700}.sr-card-section-num{font-family:var(--sr-mono);font-weight:700}.sr-card-progress{font-family:var(--sr-mono);color:var(--sr-ink-soft);flex:none;font-size:13px}.sr-card-progress b{color:var(--sr-blue-deep);font-size:15px}.sr-card-frame-wrap{border:1px solid var(--sr-line);border-radius:var(--sr-radius);background:var(--sr-card);overflow:hidden}.sr-card-frame-wrap iframe{max-width:100%}.sr-card-checks{margin-top:16px}.sr-card-checks-title{font-family:var(--sr-display);color:var(--sr-blue-deep);margin-bottom:10px;font-size:13.5px;font-weight:600}.sr-card-noread{color:var(--sr-ink-dim);padding:4px 0;font-size:14px}.sr-card-guest{color:var(--sr-ink-dim);margin-top:10px;font-size:12.5px}.sr-card-check{border:1px solid var(--sr-line);border-radius:var(--sr-radius);background:var(--sr-card);margin-bottom:12px;padding:14px}.sr-card-check.ok{border-color:var(--sr-green);background:var(--sr-green-tint)}.sr-card-check-prompt{color:var(--sr-ink);align-items:baseline;gap:8px;margin-bottom:12px;font-size:15px;line-height:1.55;display:flex}.sr-card-check-n{background:var(--sr-blue);color:#fff;width:20px;height:20px;font-family:var(--sr-mono);border-radius:999px;flex:none;place-items:center;font-size:11px;font-weight:600;display:grid;transform:translateY(2px)}.sr-card-check .sr-quiz-options{margin-top:0}.sr-card-check-verdict{border-radius:var(--sr-radius-sm);align-items:center;gap:6px;margin-top:10px;padding:8px 10px;font-size:13.5px;font-weight:600;display:flex}.sr-card-check-verdict.ok{color:var(--sr-green-deep);background:var(--sr-green-tint)}.sr-card-check-verdict.bad{color:var(--sr-ink);background:var(--sr-panel)}.sr-card-nav{border-top:1px solid var(--sr-line-soft);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;margin-top:8px;padding:14px 0 6px;display:flex}.sr-card-nav .sr-btn{align-items:center;gap:6px;display:inline-flex}.sr-card-nav .sr-btn:disabled{opacity:.5;cursor:default}.sr-card-locked{color:var(--sr-ink-dim);text-align:right;font-size:12.5px}.sr-card-done{text-align:center;border:1px solid var(--sr-green);border-radius:var(--sr-radius);background:var(--sr-green-tint);margin-top:16px;padding:18px}.sr-card-done-badge{font-family:var(--sr-display);color:var(--sr-green-deep);align-items:center;gap:6px;font-size:16px;font-weight:700;display:inline-flex}.sr-card-done p{color:var(--sr-ink-soft);margin:6px 0 14px;font-size:14px}.sr-card-done .sr-btn{align-items:center;gap:6px;display:inline-flex}@media (width<=860px){.sr-card-reader{padding:14px 14px 8px}.sr-card-head{flex-direction:column;align-items:flex-start;gap:4px}.sr-card-nav .sr-btn{flex:1;justify-content:center}.sr-card-locked{text-align:center;flex-basis:100%}}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}