body[data-lesson=bai-11]{--ink:#12233d;--accent:#2f5df0;--accent-2:#6a4cf0;--accent-soft:#eaf0ff;--mint:#0e8f74;--amber:#d98a0b;--line:#dde6f2;background-color:#f1f4fa;background-image:linear-gradient(#e4eaf4 1px,transparent 1px),linear-gradient(90deg,#e4eaf4 1px,transparent 1px);background-size:36px 36px;background-attachment:fixed}body[data-lesson=bai-11] main{padding-top:22px}body[data-lesson=bai-11] .lesson-head,body[data-lesson=bai-11] .overview,body[data-lesson=bai-11] .jump-links{max-width:1220px}body[data-lesson=bai-11] .lesson-head{position:relative;overflow:hidden;margin:0 0 22px;padding:36px 40px 30px;border-radius:22px;color:#fff;background:linear-gradient(125deg,#0d1b34,#16336b 55%,#2f5df0 135%);box-shadow:0 24px 50px #12233d38}body[data-lesson=bai-11] .lesson-head:before{content:"";position:absolute;right:-90px;top:-110px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(122,160,255,.38),transparent 68%)}body[data-lesson=bai-11] .lesson-head:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:28px 28px;mask-image:linear-gradient(120deg,transparent 30%,#000 100%);-webkit-mask-image:linear-gradient(120deg,transparent 30%,#000 100%);pointer-events:none}body[data-lesson=bai-11] .lesson-head>*{position:relative;z-index:1}body[data-lesson=bai-11] .lesson-head .kicker{display:inline-block;color:#cfe0ff;background:#ffffff1f;border:1px solid rgba(255,255,255,.22);border-radius:99px;padding:5px 14px;font-size:11px;letter-spacing:.16em}body[data-lesson=bai-11] .lesson-head h1{font-size:38px;line-height:1.22;letter-spacing:-.9px;margin:16px 0 14px;max-width:900px;color:#fff}body[data-lesson=bai-11] .lesson-head>p{color:#c7d6f2;font-size:16px;line-height:1.8;max-width:820px;margin:0 0 14px}body[data-lesson=bai-11] .lesson-head>p.duration{display:inline-block;font-size:14px;line-height:1.7;background:#ffffff1a;border:1px solid rgba(255,255,255,.2);border-radius:14px;padding:10px 16px;color:#e3ecff;margin:6px 0 0}body[data-lesson=bai-11] .lesson-head>p.duration strong{color:#ffd48a}body[data-lesson=bai-11] .breadcrumb{font-size:12px}body[data-lesson=bai-11] .overview{border:1px solid #d6e1f3;border-radius:20px;background:#fff;box-shadow:0 10px 30px #12233d12}body[data-lesson=bai-11] .overview figcaption{font-size:13.5px;color:#4a627f;border-top:1px solid #e5ecf6}body[data-lesson=bai-11] .visual-section{position:relative;border:1px solid #dbe5f3;border-radius:20px;padding:34px 38px 30px;background:#fff;box-shadow:0 1px 2px #12233d0d,0 18px 40px #12233d12;overflow:hidden}body[data-lesson=bai-11] .visual-section:before{content:"";position:absolute;left:0;right:0;top:0;height:5px;background:linear-gradient(90deg,var(--accent),var(--accent-2),#19b394)}body[data-lesson=bai-11] .section-title{gap:14px;align-items:center;margin-bottom:24px;padding-bottom:18px;border-bottom:1px solid #e8eef7}body[data-lesson=bai-11] .section-title>span:first-child{display:grid;place-items:center;flex:none;width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;font-size:15px;font-weight:800;box-shadow:0 8px 18px #2f5df052}body[data-lesson=bai-11] .section-title h2{font-size:25px;line-height:1.35;letter-spacing:-.5px;color:var(--ink)}body[data-lesson=bai-11] .time-badge{font-size:12.5px;padding:6px 14px;background:#fff6e2;color:#8a5a00;border-color:#f1d9a3}body[data-lesson=bai-11] .time-badge:before{content:"\23f1  "}body[data-lesson=bai-11] .mini-diagram{border:1px solid #d9e4f6;border-radius:16px;background:linear-gradient(180deg,#f5f8ff,#edf2fc);padding:18px}body[data-lesson=bai-11] .diagram-node{border:1px solid #d6e2f6;border-radius:12px;box-shadow:0 4px 12px #12233d0f}body[data-lesson=bai-11] .lecture>p,body[data-lesson=bai-11] .lecture li{color:#1e3250}body[data-lesson=bai-11] .lecture h4:not(.step){font-size:19px;margin:30px 0 12px;color:var(--ink);letter-spacing:-.2px}body[data-lesson=bai-11] .lecture strong{color:#0f2a55}body[data-lesson=bai-11] .lecture :not(pre)>code{background:#edf2fb;border:1px solid #dbe5f5;color:#173c8c;border-radius:6px;padding:1px 6px}body[data-lesson=bai-11] .lecture kbd{background:#fff;border:1px solid #c5d3e8;border-bottom-width:3px;border-radius:7px;padding:1px 8px;font:600 .88em ui-monospace,Menlo,monospace;color:var(--ink)}body[data-lesson=bai-11] .term{color:#2253d6;border-bottom-color:#8fb0f5}body[data-lesson=bai-11] .lecture .step{position:relative;display:flex;align-items:center;gap:14px;margin:44px 0 18px;padding:14px 20px;font-size:19px;line-height:1.4;color:var(--ink);background:linear-gradient(90deg,#eaf0ff,#f7f9ff 70%);border:1px solid #d4e1fb;border-left:6px solid var(--accent);border-radius:14px;scroll-margin-top:150px}body[data-lesson=bai-11] .lecture .step>span{background:#12233d;color:#fff;font-size:11.5px;letter-spacing:.14em;padding:5px 12px;border-radius:99px;box-shadow:0 4px 10px #12233d40}body[data-lesson=bai-11] .lecture .step>b{font-weight:800}body[data-lesson=bai-11] .lecture .step:first-child{margin-top:8px}body[data-lesson=bai-11] .code-box{border:1px solid #263b5c;border-radius:14px;background:#0e1b30;box-shadow:0 18px 38px #0a162c42;margin:20px 0}body[data-lesson=bai-11] .code-label{background:linear-gradient(180deg,#1b2d49,#162640);color:#b9cbe8;padding:11px 16px;font-size:12px;font-weight:650;letter-spacing:.06em;border-bottom:1px solid #263b5c}body[data-lesson=bai-11] .code-label:before{content:"";flex:none;width:11px;height:11px;border-radius:50%;background:#ff5f57;box-shadow:18px 0 #febc2e,36px 0 #28c840;margin-right:50px}body[data-lesson=bai-11] .code-label>span{margin-right:auto}body[data-lesson=bai-11] .code-box pre{font-size:14px;line-height:1.85;padding:18px 22px;background:transparent}body[data-lesson=bai-11] .code-box pre.line-numbers{padding-left:4.6em}body[data-lesson=bai-11] .copy{background:#ffffff14;border:1px solid rgba(255,255,255,.22);color:#e4eeff;border-radius:8px;padding:5px 12px;transition:background .15s}body[data-lesson=bai-11] .copy:hover{background:var(--accent);border-color:var(--accent)}body[data-lesson=bai-11] .lecture .table-scroll{border:1px solid #d9e3f2;border-radius:16px;background:#fff;box-shadow:0 8px 24px #12233d0f;margin:20px 0}body[data-lesson=bai-11] .lecture table{font-size:14.5px;line-height:1.75}body[data-lesson=bai-11] .lecture th{background:#12233d;color:#dce8ff;font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;padding:13px 16px;border-bottom:0}body[data-lesson=bai-11] .lecture td{padding:14px 16px;border-bottom:1px solid #e8eef7;color:#1e3250}body[data-lesson=bai-11] .lecture tbody tr:nth-child(2n){background:#f8fafe}body[data-lesson=bai-11] .lecture tbody tr{transition:background .15s}body[data-lesson=bai-11] .lecture tbody tr:hover{background:#eef4ff}body[data-lesson=bai-11] .lecture td:first-child{border-left:4px solid transparent}body[data-lesson=bai-11] .lecture td:first-child:has(>code){min-width:210px}body[data-lesson=bai-11] .lecture tbody tr:hover td:first-child{border-left-color:var(--accent)}body[data-lesson=bai-11] .lecture td:first-child>code{display:inline-block;background:#eaf0ff;border:1px solid #cddcf9;color:#1b3f9a;padding:4px 9px;border-radius:8px;font-size:.9em;line-height:1.6;white-space:normal;word-break:break-word}body[data-lesson=bai-11] .callout{position:relative;margin:22px 0;padding:18px 22px 18px 24px;border:1px solid #d3e1fb;border-left:6px solid var(--accent);border-radius:14px;background:linear-gradient(135deg,#f3f7ff,#fafcff);font-size:15px;line-height:1.85;box-shadow:0 6px 18px #2f5df012}body[data-lesson=bai-11] .callout>strong:first-child{display:block;font-size:16px;color:#1c47c4;margin-bottom:6px}body[data-lesson=bai-11] .callout.warm{border-color:#f1dca8;border-left-color:var(--amber);background:linear-gradient(135deg,#fff8e6,#fffcf3);box-shadow:0 6px 18px #d98a0b17}body[data-lesson=bai-11] .callout.warm>strong:first-child{color:#8a5500}body[data-lesson=bai-11] .callout.green{border-color:#bfe4d6;border-left-color:var(--mint);background:linear-gradient(135deg,#eaf8f2,#f6fcf9);box-shadow:0 6px 18px #0e8f7417}body[data-lesson=bai-11] .callout.green>strong:first-child{color:#0a6e58}body[data-lesson=bai-11] .code-flow-wrap{margin:22px 0 14px;padding:18px 20px 20px;background:linear-gradient(180deg,#f5f8ff,#eff4fd);border:1px dashed #b9cdf2;border-radius:18px}body[data-lesson=bai-11] .code-flow-title{margin:0 0 14px;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:#2352d8}body[data-lesson=bai-11] .lecture .code-flow{padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:12px}body[data-lesson=bai-11] .code-flow li{flex:none;background:#fff;border:1px solid #d6e2f6;border-radius:14px;padding:13px 16px 13px 58px;box-shadow:0 4px 12px #12233d0f;color:#4a627f;font-size:14px;line-height:1.55}body[data-lesson=bai-11] .code-flow li:before{left:14px;top:50%;transform:translateY(-50%);width:30px;height:30px;font-size:14px;background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 6px 12px #2f5df04d}body[data-lesson=bai-11] .code-flow li:not(:last-child):after{display:none}body[data-lesson=bai-11] .code-flow li b{font-size:15px;margin-bottom:2px}body[data-lesson=bai-11] .illus{border:1px solid #d7e3f5;border-radius:18px;background:#fff;box-shadow:0 10px 28px #12233d14;margin:26px 0}body[data-lesson=bai-11] .illus-scroll{background:linear-gradient(180deg,#fafcff,#f3f7fe);padding:16px}body[data-lesson=bai-11] .illus figcaption{background:#fff;font-size:14px;color:#4a627f;padding:13px 20px}body[data-lesson=bai-11] .exercise{position:relative;overflow:hidden;margin:30px 0;padding:24px 28px 22px 32px;background:#fff;border:1px solid #f0dcae;border-radius:18px;box-shadow:0 14px 32px #d98a0b1f}body[data-lesson=bai-11] .exercise:before{content:"";position:absolute;left:0;top:0;bottom:0;width:8px;background:linear-gradient(180deg,#f7b733,#e07b00)}body[data-lesson=bai-11] .exercise .eyebrow{display:inline-block;margin:0 0 8px;padding:5px 14px;background:#fff1cf;border:1px solid #f1d58f;border-radius:99px;color:#8a5500;font-size:12px!important;font-weight:800;letter-spacing:.1em}body[data-lesson=bai-11] .exercise>h4{margin:6px 0 12px;font-size:21px;color:var(--ink)}body[data-lesson=bai-11] .lecture details.answer{margin-top:18px;padding:0;border:1px solid #c7e5d8;border-radius:14px;background:#f3fbf7;overflow:hidden}body[data-lesson=bai-11] .lecture details.answer>summary{display:flex;align-items:center;gap:8px;padding:12px 18px;font-weight:800;color:#0a6e58;list-style:none}body[data-lesson=bai-11] .lecture details.answer>summary::-webkit-details-marker{display:none}body[data-lesson=bai-11] .lecture details.answer>summary:before{content:"\2713";display:grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--mint);color:#fff;font-size:13px}body[data-lesson=bai-11] .lecture details.answer[open]>summary{border-bottom:1px solid #c7e5d8;background:#e7f6ef}body[data-lesson=bai-11] .lecture details.answer>*:not(summary){margin-left:20px;margin-right:20px}body[data-lesson=bai-11] .lecture details.answer>*:last-child{margin-bottom:16px}body[data-lesson=bai-11] .lecture details.answer>summary+*{margin-top:14px}body[data-lesson=bai-11] .lecture details:not(.answer):not(.jump-sub){margin:20px 0;padding:0;border:1px solid #d6e2f4;border-radius:14px;background:#fafcff;overflow:hidden}body[data-lesson=bai-11] .lecture details:not(.answer):not(.jump-sub)>summary{padding:13px 18px;font-weight:700;font-size:14.5px;color:#2352d8;cursor:pointer}body[data-lesson=bai-11] .lecture details:not(.answer):not(.jump-sub)[open]>summary{background:#eef3ff;border-bottom:1px solid #d6e2f4}body[data-lesson=bai-11] .lecture details:not(.answer):not(.jump-sub)>*:not(summary){margin-left:20px;margin-right:20px}body[data-lesson=bai-11] .lecture details:not(.answer):not(.jump-sub)>summary+*{margin-top:16px}body[data-lesson=bai-11] .lecture details:not(.answer):not(.jump-sub)>*:last-child{margin-bottom:18px}body[data-lesson=bai-11] .source-file{border:1px solid #cfdef5;border-radius:18px;background:linear-gradient(135deg,#f3f7ff,#fff);padding:18px 22px;box-shadow:0 8px 22px #12233d0f}body[data-lesson=bai-11] .source-file .source-download{background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 8px 18px #2f5df047;border-radius:10px;padding:9px 16px}body[data-lesson=bai-11] .source-file>details{margin:10px 0 0}body[data-lesson=bai-11] .os-bar label{font-size:13px;border-radius:10px 10px 0 0}body[data-lesson=bai-11] .os-panels .code-box{margin-top:0;border-top-left-radius:0}body[data-lesson=bai-11] .term-note{border-left:0;padding-left:0}body[data-lesson=bai-11] .term-note>div{padding:14px 16px;background:#fff;border:1px solid #dae5f5;border-radius:14px;box-shadow:0 6px 16px #12233d0f}body[data-lesson=bai-11] .term-note strong{color:#1c47c4}body[data-lesson=bai-11] .remember{padding:30px 34px;border:1px solid #bfe4d6;border-radius:20px;background:linear-gradient(135deg,#e9f8f2,#f7fcfa);box-shadow:0 14px 32px #0e8f741f}body[data-lesson=bai-11] .remember h2{font-size:22px;color:#0a6e58}body[data-lesson=bai-11] .summary-list{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:10px}body[data-lesson=bai-11] .summary-list li{position:relative;padding:14px 18px 14px 52px;background:#fff;border:1px solid #cfe9de;border-radius:14px;font-size:15px;line-height:1.8;color:#1e3250}body[data-lesson=bai-11] .summary-list li:before{content:"\2713";position:absolute;left:16px;top:15px;display:grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--mint);color:#fff;font-size:13px;font-weight:800}body[data-lesson=bai-11] .self-check,body[data-lesson=bai-11] .notes{border:1px solid #d9e3f2;border-radius:18px;padding:20px 26px;box-shadow:0 8px 24px #12233d0f}body[data-lesson=bai-11] fieldset label{background:#f4f7fc;border:1px solid transparent;border-radius:10px;padding:11px 14px;font-size:14px;transition:background .15s,border-color .15s}body[data-lesson=bai-11] fieldset label:hover{background:#eaf0ff;border-color:#c6d6f7}body[data-lesson=bai-11] .primary{background:linear-gradient(135deg,var(--accent),var(--accent-2));border:0;border-radius:11px;padding:12px 22px;box-shadow:0 10px 22px #2f5df04d;font-size:13.5px}body[data-lesson=bai-11] .page-turn{border-top:0;gap:16px}body[data-lesson=bai-11] .page-turn>a{padding:18px 22px;background:#fff;border:1px solid #d9e3f2;border-radius:16px;box-shadow:0 8px 22px #12233d0f;transition:transform .15s,box-shadow .15s,border-color .15s}body[data-lesson=bai-11] .page-turn>a:hover{transform:translateY(-3px);border-color:#a9c0f3;box-shadow:0 16px 32px #2f5df026}body[data-lesson=bai-11] .jump-links{top:calc(var(--top) + 12px);padding:11px 12px;border-radius:16px;box-shadow:0 14px 34px #12233d21;border-color:#d6e1f3}body[data-lesson=bai-11] .jump-item>a>span{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border:0}@media (max-width:700px){body[data-lesson=bai-11] .lesson-head{padding:26px 22px 22px;border-radius:18px}body[data-lesson=bai-11] .lesson-head h1{font-size:28px}body[data-lesson=bai-11] .visual-section{padding:26px 18px 22px;border-radius:16px}body[data-lesson=bai-11] .section-title h2{font-size:21px}body[data-lesson=bai-11] .section-title>span:first-child{width:38px;height:38px}body[data-lesson=bai-11] .lecture .step{padding:12px 14px;font-size:17px;flex-wrap:wrap;gap:8px}body[data-lesson=bai-11] .code-label:before{margin-right:34px;box-shadow:16px 0 #febc2e,32px 0 #28c840}body[data-lesson=bai-11] .code-box pre{font-size:12.5px;padding:14px}body[data-lesson=bai-11] .lecture table{font-size:13.5px}body[data-lesson=bai-11] .lecture td,body[data-lesson=bai-11] .lecture th{padding:11px 12px}body[data-lesson=bai-11] .exercise{padding:20px 18px 18px 24px}body[data-lesson=bai-11] .remember{padding:22px 18px}body[data-lesson=bai-11] .code-flow{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){body[data-lesson=bai-11] *{transition:none!important}}@media print{body[data-lesson=bai-11]{background:#fff}body[data-lesson=bai-11] .lesson-head{background:none;color:#000;box-shadow:none;padding:0}body[data-lesson=bai-11] .lesson-head h1,body[data-lesson=bai-11] .lesson-head>p{color:#000}body[data-lesson=bai-11] .lesson-head:before,body[data-lesson=bai-11] .lesson-head:after,body[data-lesson=bai-11] .visual-section:before{display:none}body[data-lesson=bai-11] .visual-section,body[data-lesson=bai-11] .exercise,body[data-lesson=bai-11] .callout{box-shadow:none}}@media screen{body[data-lesson=bai-11]{--side:300px;background:#f4f6fa}body[data-lesson=bai-11] .sidebar{padding:24px 18px;background:#fff;border-right:1px solid #e3e8f0;scrollbar-color:#d1daea transparent}body[data-lesson=bai-11] .topbar{box-shadow:0 2px 12px #12233d04}body[data-lesson=bai-11] .back-index{display:flex;align-items:center;min-height:42px;margin:12px 0 16px;padding:0 12px;border:1px solid #e3e8f0;border-radius:10px;font-size:12px;color:#51637d;font-weight:600}body[data-lesson=bai-11] .back-index:hover{background:#f4f7fc;color:#245cea}.lesson-menu-heading{display:flex;align-items:center;justify-content:space-between;padding:0 10px}.lesson-menu-heading span{display:block;font-size:9px;letter-spacing:1.6px;font-weight:750;color:#7b8ba4}.lesson-menu-heading strong{display:block;font-size:19px;letter-spacing:-.5px;margin-top:4px;color:#172b47}.lesson-menu-close{display:none}.lesson-menu-tabs{display:flex;padding:4px;gap:4px;background:#eff3f8;border-radius:11px;margin-bottom:22px}.lesson-menu-tabs button{flex:1;border:0;border-radius:8px;padding:9px 4px;color:#62738b;font-size:12px;font-weight:650;background:transparent;white-space:nowrap}.lesson-menu-tabs button[aria-selected=true]{background:#fff;color:#245cea;box-shadow:0 2px 5px #172b4710}.lesson-menu-tabs button span{font-size:10px;margin-left:3px;color:#8190a6}.outline-caption{font-size:9px;font-weight:750;letter-spacing:.9px;color:#7b8ba4;margin:0 10px 14px;line-height:1.8}.outline-group{margin:5px 0 9px}body[data-lesson=bai-11] .outline-section{display:flex;align-items:flex-start;gap:11px;padding:12px 10px;border:1px solid transparent;border-radius:11px;text-decoration:none;color:#435570;font-size:12px;line-height:1.65;transition:background .15s,color .15s}.outline-section>span{display:grid;place-items:center;flex:none;width:27px;height:27px;border:1px solid #dfe6ef;border-radius:8px;background:#f7f9fc;color:#8a9ab1;font-size:10px;font-weight:700}.outline-section>b{padding-top:3px;font-weight:600}body[data-lesson=bai-11] .outline-section:hover{background:#f5f7fb;color:#245cea}body[data-lesson=bai-11] .outline-section[aria-current=location]{background:#edf2ff;border-color:#dbe5ff;color:#245cea}.outline-section[aria-current=location]>span{background:#245cea;border-color:#245cea;color:#fff}.outline-steps{margin:0 8px 4px 48px}.outline-steps summary{font-size:10px;color:#7b8ba4;cursor:pointer;padding:4px 0 8px}.outline-step-links{display:flex;flex-direction:column;border-left:1px solid #dce5f2;padding-left:10px;gap:3px}.outline-step-links a{font-size:11px;line-height:1.65;text-decoration:none;color:#60718a;padding:7px 8px;border-radius:6px}.outline-step-links a:hover{background:#edf2ff;color:#245cea}body[data-lesson=bai-11] .sidebar nav>a{font-size:12px;padding:10px;gap:10px}body[data-lesson=bai-11] .nav-label{font-size:9px;margin-top:20px}body[data-lesson=bai-11] .nav-number{border-radius:7px}body[data-lesson=bai-11] .course-progress{margin-top:24px;padding:16px;border:1px solid #e4eaf2;border-radius:12px;background:#f8fafc}body[data-lesson=bai-11] .course-progress strong{font-size:13px;color:#365376}body[data-lesson=bai-11] .plain{padding:12px 10px;font-size:12px}body[data-lesson=bai-11] .sidebar>.storage-note{padding:0 10px;font-size:10px;color:#8592a6}body.lesson-menu-ready .jump-links{display:none}body[data-lesson=bai-11] .lesson-row{scroll-margin-top:95px}body[data-lesson=bai-11] .lesson-head{box-shadow:0 8px 24px #12233d12}body[data-lesson=bai-11] .visual-section{box-shadow:0 4px 18px #12233d05}@media (min-width:701px) and (max-width:1180px){body[data-lesson=bai-11]{--side:270px}body[data-lesson=bai-11] main{padding-left:24px;padding-right:24px}}@media (max-width:700px){body[data-lesson=bai-11]{--side:0px}body[data-lesson=bai-11] .sidebar{width:min(340px,calc(100vw - 28px));padding:22px 18px;box-shadow:16px 0 50px #14294824;overscroll-behavior:contain}.lesson-menu-close{display:grid;place-items:center;width:36px;height:36px;border:1px solid #e2e8f0;border-radius:9px;background:#f8fafc;color:#526780;font-size:24px;line-height:1}body[data-lesson=bai-11] .menu-button{width:40px;height:40px;justify-content:center;border-radius:10px;color:#245cea;background:#eef3ff;border-color:#dce6ff}body[data-lesson=bai-11] .outline-section{font-size:13px;padding-top:13px;padding-bottom:13px}.outline-step-links a{font-size:12px;min-height:40px}}}@media screen{.outline-practice{margin:0 0 18px;border:1px solid #dbe5ff;border-radius:11px;background:#f4f7ff}.outline-practice>summary{padding:13px 12px;color:#245cea;font-size:12px;font-weight:700;cursor:pointer}.outline-practice .outline-step-links{margin:0 12px 12px;border-left-color:#cedbfc}.outline-practice .outline-step-links a{font-size:12px;padding:9px 8px}body[data-lesson=bai-11] .exercise[id]{scroll-margin-top:95px}}body[data-lesson=bai-11] .task{position:relative;overflow:hidden;margin:22px 0;padding:22px 26px 20px 30px;background:#fff;border:1px solid #cfdcf6;border-radius:18px;box-shadow:0 12px 28px #2f5df01a}body[data-lesson=bai-11] .task:before{content:"";position:absolute;left:0;top:0;bottom:0;width:8px;background:linear-gradient(180deg,var(--accent),var(--accent-2))}body[data-lesson=bai-11] .task-tag{display:inline-block;margin:0 0 6px;padding:5px 14px;background:var(--accent-soft);border:1px solid #c9d9fb;border-radius:99px;color:#1c47c4;font-size:12px;font-weight:800;letter-spacing:.1em}body[data-lesson=bai-11] .lecture .task>h4{margin:6px 0 10px;font-size:21px}body[data-lesson=bai-11] .task .table-scroll{margin:14px 0}body[data-lesson=bai-11] .task-hint{padding:12px 16px;background:#fff8e6;border:1px solid #f1dca8;border-left:5px solid var(--amber);border-radius:12px;font-size:14.5px;margin:12px 0 0}body[data-lesson=bai-11] .basic-head{display:flex;flex-direction:column;gap:4px;margin:44px 0 18px;padding:20px 24px;border-radius:18px;color:#fff;background:linear-gradient(120deg,#0a6e58,#12a37f);box-shadow:0 14px 30px #0e8f7447}body[data-lesson=bai-11] .basic-head>span{align-self:flex-start;padding:4px 13px;border-radius:99px;background:#ffffff2e;border:1px solid rgba(255,255,255,.35);font-size:11.5px;font-weight:800;letter-spacing:.14em}body[data-lesson=bai-11] .basic-head>b{font-size:22px;line-height:1.35;margin-top:6px}body[data-lesson=bai-11] .basic-head>small{font-size:14px;color:#d6f5ea}body[data-lesson=bai-11] .task-label{margin:20px 0 6px;font-size:12px;font-weight:800;letter-spacing:.14em;color:#1c47c4;text-transform:uppercase}body[data-lesson=bai-11] .task>p:not(.task-tag):not(.task-label){font-size:16px}body[data-lesson=bai-11] .task ol{margin:6px 0;padding-left:26px}body[data-lesson=bai-11] .task ol>li{font-size:16px;margin:9px 0}