.learning-intro{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding:30px 34px;margin-bottom:18px;border-radius:24px;color:#fff;background:linear-gradient(120deg,#072f70 0%,#1658b5 68%,#2f77d8 100%);box-shadow:0 22px 48px rgba(14,61,130,.2);position:relative;overflow:hidden}.learning-intro:after{content:"";position:absolute;width:360px;height:360px;border:1px solid rgba(255,255,255,.18);border-radius:50%;right:-80px;top:-230px;box-shadow:0 0 0 54px rgba(255,255,255,.05),0 0 0 108px rgba(255,255,255,.035)}.learning-intro>div{position:relative;z-index:1}.learning-intro .kicker{color:#dfff54}.learning-intro h2{font-size:32px;letter-spacing:-.04em;margin:9px 0 7px}.learning-intro p{max-width:710px;margin:0;color:#d6e7ff;font-size:15px;line-height:1.55}.learning-progress{width:180px;flex:none}.learning-progress b{display:block;font-size:34px;color:#dfff54}.learning-progress span{display:block;font-size:11px;font-weight:800;letter-spacing:.09em;text-transform:uppercase;color:#d7e6fb}.learning-progress i{display:block;height:7px;margin-top:10px;border-radius:99px;background:rgba(255,255,255,.18);overflow:hidden}.learning-progress em{display:block;height:100%;border-radius:inherit;background:#dfff54;transition:width .45s ease}
.learning-layout{display:grid;grid-template-columns:minmax(230px,280px) minmax(0,1fr);align-items:start;gap:18px}.learning-nav{padding:12px;position:sticky;top:84px}.learning-nav-head{display:flex;align-items:center;justify-content:space-between;padding:9px 9px 13px}.learning-nav-head b{font-size:14px;color:#102f59}.learning-nav-head span{font-size:11px;color:#7489a2}.learning-nav>button{width:100%;display:grid;grid-template-columns:36px 1fr;align-items:center;gap:10px;border:0;background:transparent;text-align:left;padding:10px;border-radius:13px;color:#52677f;cursor:pointer;transition:background .2s,transform .2s,color .2s}.learning-nav>button:hover{background:#f0f6fc;transform:translateX(2px)}.learning-nav>button.active{background:#e9f2ff;color:#0b3b84}.learning-nav>button>span{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;background:#edf2f7;color:#627892;font-size:11px;font-weight:900}.learning-nav>button.active>span{background:#0b3b84;color:#dfff54}.learning-nav>button.done>span{background:#e1f7ef;color:#098264}.learning-nav>button b,.learning-nav>button small{display:block}.learning-nav>button b{font-size:12px;line-height:1.3}.learning-nav>button small{font-size:10px;color:#8798ab;margin-top:2px}
.lesson-card{overflow:hidden;padding:0}.lesson-card>header{padding:30px 34px;background:linear-gradient(145deg,#f0f7ff,#fff)}.lesson-card>header>div{display:flex;align-items:center;gap:10px;color:#2165c5;font-size:10px;font-weight:900;letter-spacing:.12em}.learn-icon{display:grid;place-items:center;width:40px;height:40px;border-radius:12px;background:#0b3b84;color:#dfff54}.learn-icon .vector-icon{width:21px;height:21px;stroke:currentColor}.lesson-card>header h2{font-size:29px;letter-spacing:-.04em;color:#102f59;margin:16px 0 6px}.lesson-card>header p{margin:0;color:#60748c;font-size:14px}.lesson-body{padding:30px 34px}.lesson-body>p{font-size:14px;line-height:1.75;color:#40566f}.lesson-body>p:first-child{margin-top:0}.learn-example,.learn-note{margin:20px 0;padding:18px;border-radius:16px}.learn-example{background:#f0f7ff;border:1px solid #d9e8f8;color:#27496d}.learn-example>b{display:block;color:#0b3b84;margin-bottom:12px}.learn-example>strong{display:block;font-size:12px;margin-top:12px}.value-chain{display:flex;align-items:center;gap:10px}.value-chain span{flex:1;padding:12px;border-radius:12px;background:#fff;font-size:12px;font-weight:800;box-shadow:0 5px 16px rgba(24,72,125,.08)}.value-chain small{display:block;font-size:10px;font-weight:600;color:#6d8197;margin-top:4px}.value-chain i{font-style:normal;color:#2b6fce;font-weight:900}.learn-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px;margin:18px 0}.learn-columns>div{padding:17px;border:1px solid #dce7f1;border-radius:15px;background:#fff}.learn-columns b{color:#123763;font-size:13px}.learn-columns p{margin:6px 0 0;color:#647990;font-size:12px;line-height:1.6}.learn-columns button{margin-top:12px}.learn-note{background:#fff8e7;border:1px solid #f6dfa0;color:#6e5a2c;font-size:13px;line-height:1.6}.learn-note b{display:block;color:#805e08;margin-bottom:3px}.learn-sector-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:18px 0}.learn-sector-grid>div{display:grid;grid-template-columns:10px 1fr;gap:4px 9px;padding:13px;border-radius:13px;background:#f6f9fc}.learn-sector-grid i{grid-row:1/3;width:8px;height:100%;border-radius:9px}.learn-sector-grid b{font-size:11px;color:#183b65}.learn-sector-grid small{font-size:9px;color:#7d8da1}.formula{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:18px 0;padding:18px 20px;border-radius:15px;background:#092f6f;color:#fff}.formula span{font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:#bcd5f7}.formula b{font-size:14px;text-align:right}.measure-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.measure-list>div{padding:16px;border-radius:14px;background:#f4f8fc;border-left:4px solid #2d70d1}.measure-list b,.measure-list span{display:block}.measure-list b{font-size:13px;color:#10345f}.measure-list span{font-size:11px;color:#657a92;margin-top:4px}.reading-flow{display:flex;align-items:center;justify-content:center;gap:9px;margin:5px 0 22px}.reading-flow span{min-width:92px;text-align:center;font-size:10px;font-weight:800;color:#38536f}.reading-flow span b{width:30px;height:30px;display:grid;place-items:center;margin:0 auto 7px;border-radius:10px;background:#0b3b84;color:#dfff54}.reading-flow i{font-style:normal;color:#7aa4da}.checklist{display:grid;gap:10px}.checklist label{display:grid;grid-template-columns:42px 1fr;gap:2px 12px;padding:15px;border-radius:14px;background:#f4f8fc}.checklist label>span{grid-row:1/3;align-self:center;font-size:12px;font-weight:900;color:#2c6dcb}.checklist b{font-size:13px;color:#173a63}.checklist small{font-size:11px;color:#6d8096}
.learning-quiz{margin-top:28px;padding:22px;border-radius:18px;border:1px solid #dce7f2;background:#fbfdff}.quiz-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.quiz-head span{font-size:9px;color:#2d6ecb;font-weight:900;letter-spacing:.12em}.quiz-head h3{font-size:19px;color:#12345f;margin:3px 0 0}.quiz-head>b{font-size:11px;color:#71869c}.learning-quiz fieldset{border:0;padding:0;margin:0 0 20px}.learning-quiz legend{font-size:13px;font-weight:800;color:#304962;margin-bottom:10px}.quiz-option{width:100%;display:flex;align-items:center;gap:10px;border:1px solid #dbe6f0;background:#fff;padding:10px 12px;margin:6px 0;border-radius:11px;text-align:left;font:inherit;font-size:12px;color:#465d75;cursor:pointer}.quiz-option:hover:not(:disabled){border-color:#2f73d1;background:#f3f8ff}.quiz-option>span{width:26px;height:26px;display:grid;place-items:center;border-radius:8px;background:#edf3f8;font-weight:900;color:#315b8b}.quiz-option.right{border-color:#8edbc3;background:#eaf9f4;color:#08765b}.quiz-option.wrong{border-color:#ffb3a8;background:#fff1ee;color:#b4463d}.quiz-option.muted{opacity:.48}.quiz-result{display:flex;align-items:center;gap:12px;padding-top:15px;border-top:1px solid #dce7f1}.quiz-result b{color:#0b7f61}.quiz-result span{flex:1;font-size:11px;color:#6e8197}.quiz-result button,.lesson-actions button{border:1px solid #cad9e8;background:#fff;color:#1d4f88;border-radius:10px;padding:9px 13px;font-weight:800;cursor:pointer}.lesson-actions{display:flex;justify-content:space-between;margin-top:22px}.lesson-actions button:last-child{background:#0b3b84;color:#fff;border-color:#0b3b84}.lesson-actions button:disabled{opacity:.35;cursor:not-allowed}
@media(max-width:980px){.learning-layout{grid-template-columns:1fr}.learning-nav{position:static;display:flex;overflow-x:auto}.learning-nav-head{display:none}.learning-nav>button{min-width:205px}.learning-intro{align-items:flex-start}.reading-flow{flex-wrap:wrap}.reading-flow i{display:none}}
@media(max-width:680px){.learning-intro{padding:24px;display:block}.learning-intro h2{font-size:26px}.learning-progress{width:100%;margin-top:22px}.lesson-card>header,.lesson-body{padding:24px}.learn-columns,.measure-list{grid-template-columns:1fr}.learn-sector-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.value-chain{align-items:stretch;flex-direction:column}.value-chain i{transform:rotate(90deg);align-self:center}.formula{display:block}.formula b{display:block;text-align:left;margin-top:8px}.quiz-result{align-items:flex-start;flex-wrap:wrap}}