.ld{background:var(--paper);color:var(--ink);overflow-x:hidden}.ld-wrap{max-width:1312px;margin:0 auto;padding:0 64px}.ld-nav{height:84px;display:flex;align-items:center;gap:40px;border-bottom:1px solid var(--line)}.ld-nav .brand b{font-size:20px}.ld-links{display:flex;gap:32px;font-weight:500;margin-left:24px}.ld-links a{color:var(--ink)}.ld-btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;height:52px;padding:0 26px;border-radius:14px;font-weight:600;font-size:16px;border:0;cursor:pointer;text-decoration:none}.ld-btn.p{background:var(--accent);color:#fff}.ld-btn.p:hover{background:var(--accent-ink);color:#fff}.ld-btn.g{background:transparent;color:var(--ink);border:1.5px solid var(--ink)}.ld-btn.g:hover{color:var(--ink);background:rgba(21,23,28,.04)}.ld-grid-paper{background-color:var(--paper);background-image:linear-gradient(#E6E0D2 1px,transparent 0),linear-gradient(90deg,#E6E0D2 1px,transparent 0);background-size:32px 32px}.ld-hero{padding:88px 0 96px}.ld-hero .ld-wrap{display:grid;grid-template-columns:1fr 1fr;grid-gap:64px;gap:64px;align-items:center}.ld-h1{font-family:var(--f-disp);font-size:64px;line-height:1.04;font-weight:700;letter-spacing:-.02em;margin:0}.ld-h1 mark{background:var(--amber);padding:0 10px;border-radius:12px;color:inherit}.ld-lead{font-size:20px;line-height:1.55;color:var(--muted);max-width:560px;margin:0}.ld-pill{padding:8px 14px;border-radius:999px;font-size:14px;font-weight:600}.ld-sec{padding:104px 0}.ld-h2{font-family:var(--f-disp);font-size:44px;line-height:1.1;font-weight:700;letter-spacing:-.02em;margin:0}.ld-courses{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:24px;gap:24px}.ld-course{background:#fff;border:1px solid var(--line);border-radius:24px;padding:32px;display:flex;flex-direction:column;gap:18px;min-height:300px}.ld-course.dark{background:var(--night);color:#fff;border:0}.ld-course.amber{background:var(--amber);border:0}.ld-course h3{font-family:var(--f-disp);font-size:26px;line-height:1.2;font-weight:600;margin:0;letter-spacing:-.02em}.ld-course p{margin:0;font-size:16px;line-height:1.55;color:var(--muted)}.ld-course.dark p{color:#C9CCD6}.ld-course .tag{font-family:var(--f-mono);font-size:14px;color:var(--accent)}.ld-course.dark .tag{color:var(--amber)}.ld-how{background:var(--paper-2)}.ld-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:24px;gap:24px}.ld-num{font-family:var(--f-disp);font-size:56px;font-weight:700;color:var(--accent)}.ld-feats{background:#fff;border-radius:28px;padding:40px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:32px;gap:32px}.ld-ic{width:52px;height:52px;border-radius:16px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center}.ld-quote{margin:0;background:#fff;border:1px solid var(--line);border-radius:28px;padding:48px;display:flex;flex-direction:column;gap:24px}.ld-quote blockquote{margin:0;font-size:24px;line-height:1.5;font-weight:500}.ld-quote.sm{padding:28px;gap:14px}.ld-quote.sm blockquote{font-size:17px}.ld-about{display:grid;grid-template-columns:5fr 7fr;grid-gap:48px;gap:48px;align-items:center}.ld-photo{height:520px;border-radius:28px;background:var(--paper-2);overflow:hidden}.ld-photo img{width:100%;height:100%;object-fit:cover}.ld-lead-box{padding:64px;border-radius:32px;background:var(--ink);color:#fff;display:grid;grid-template-columns:1fr 1fr;grid-gap:64px;gap:64px;margin-bottom:88px}.ld-field{display:flex;flex-direction:column;gap:8px}.ld-field label{font-size:14px;font-weight:600;color:#C9CCD6}.ld-field input,.ld-field select{height:54px;border-radius:12px;border:1.5px solid #3a3f4b;background:#20232B;color:#fff;padding:0 16px;font-size:16px}.ld-foot{padding:32px 0;border-top:1px solid var(--line)}.ld-foot .ld-wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:15px;color:var(--muted);flex-wrap:wrap}@media (max-width:1100px){.ld-wrap{padding:0 32px}.ld-hero .ld-wrap{grid-template-columns:1fr}.ld-courses{grid-template-columns:repeat(2,minmax(0,1fr))}.ld-about,.ld-lead-box{grid-template-columns:1fr}}@media (max-width:700px){.ld-wrap{padding:0 16px}.ld-nav{height:64px;gap:12px}.ld-links{display:none}.ld-nav .ld-btn{height:40px;padding:0 14px;font-size:14px}.ld-hero{padding:36px 0 40px}.ld-h1{font-size:34px;line-height:1.08}.ld-h1 mark{padding:0 6px;border-radius:8px}.ld-lead{font-size:17px}.ld-hero .ld-btn{width:100%}.ld-sec{padding:44px 0}.ld-h2{font-size:26px}.ld-3,.ld-courses,.ld-feats{grid-template-columns:1fr}.ld-course{min-height:0;padding:22px}.ld-course h3{font-size:20px}.ld-num{font-size:32px}.ld-feats,.ld-quote{padding:24px}.ld-quote blockquote{font-size:17px}.ld-photo{height:320px}.ld-lead-box{padding:28px 18px;gap:20px;margin:0 -4px 24px;border-radius:24px}}.ld-more summary{list-style:none;cursor:pointer;display:flex;flex-direction:column;gap:14px}.ld-more summary::-webkit-details-marker{display:none}.ld-more-btn{color:var(--accent);font-weight:600;font-size:16px}.ld-more[open] summary{display:none}.ld-lead-box .consent a{color:var(--amber)}.hs{position:relative;height:600px;--dx:64px;--dy:232px}.hs-stage{position:absolute;inset:-40px -24px;-webkit-mask-image:linear-gradient(180deg,transparent 0,#000 16%,#000 84%,transparent);mask-image:linear-gradient(180deg,transparent 0,#000 16%,#000 84%,transparent)}.hs-card{position:absolute;left:50%;top:50%;width:min(460px,calc(100% - 40px));height:270px;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:26px;overflow:hidden;transform:translate(-50%,-50%) translate(calc(var(--k) * var(--dx)),calc(var(--k) * var(--dy))) rotate(-5deg) scale(calc(1 - var(--ak) * .1));filter:blur(calc(var(--ak) * 5px));opacity:calc(1 - var(--ak) * .42);z-index:calc(10 - var(--ak));transition:transform .9s cubic-bezier(.65,0,.25,1),filter .9s,opacity .9s,box-shadow .9s;cursor:pointer;will-change:transform,filter}.hs-card.on{cursor:default;box-shadow:0 30px 70px rgba(21,23,28,.18)}.hs-band{position:relative;padding:22px 26px 20px;display:flex;flex-direction:column;gap:8px;min-height:126px;justify-content:flex-end;overflow:hidden}.hs-band h3{font-family:var(--f-disp);font-size:24px;line-height:1.15;font-weight:600;letter-spacing:-.02em;margin:0;position:relative;max-width:88%}.hs-tag{font-family:var(--f-mono);font-size:13px;opacity:.8;position:relative}.hs-num{position:absolute;right:18px;top:6px;font-family:var(--f-disp);font-size:72px;font-weight:700;opacity:.16;line-height:1}.hs-body{flex:1 1;padding:16px 26px 20px;display:flex;flex-direction:column;justify-content:space-between;gap:12px}.hs-body p{margin:0;font-size:15px;line-height:1.5;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.hs-body .ld-btn{height:44px;padding:0 18px;align-self:flex-start;font-size:15px}.hs-dots{position:absolute;right:-8px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;gap:8px;z-index:20}.hs-dots button{width:10px;height:10px;border-radius:5px;border:0;padding:0;background:rgba(21,23,28,.18);cursor:pointer;transition:height .3s,background .3s}.hs-dots button.on{height:28px;background:var(--accent)}@media (prefers-reduced-motion:reduce){.hs-card{transition-duration:.01s}}@media (max-width:1100px){.hs{height:520px;--dx:36px;--dy:210px;max-width:560px;width:100%;margin:8px auto 0}}@media (max-width:700px){.hs{height:440px;--dx:18px;--dy:196px}.hs-card{height:250px;width:calc(100% - 44px)}.hs-band{min-height:112px;padding:18px 20px 16px}.hs-band h3{font-size:20px}.hs-body{padding:14px 20px 18px}.hs-dots{right:-6px}}.hs{--dy:248px}.ld-hero .hs-body .ld-btn{width:auto}@media (max-width:1100px){.hs{--dy:214px}}@media (max-width:700px){.hs{--dy:200px}.hs-num{font-size:52px;top:8px;right:14px}.hs-band h3{max-width:82%}}.ld-rev-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px 24px}.rl{--gap:24px;position:relative;display:flex;flex-direction:column;gap:28px;padding:0 76px}.rl-view{overflow:hidden;touch-action:pan-y;cursor:-webkit-grab;cursor:grab;-moz-user-select:none;user-select:none;-webkit-user-select:none;border-radius:28px}.rl-view:active{cursor:-webkit-grabbing;cursor:grabbing}.rl-track{display:flex;gap:var(--gap);will-change:transform}.rl-card{flex:0 0 calc((100% - (var(--per) - 1) * var(--gap)) / var(--per));min-width:0;padding:40px;gap:20px;min-height:420px}.rl-card blockquote{font-size:19px;line-height:1.55;white-space:pre-wrap}.rl-card blockquote.clamp{display:-webkit-box;-webkit-line-clamp:8;-webkit-box-orient:vertical;overflow:hidden}.rl-card .ld-more-btn{align-self:flex-start}.rl-arrow{position:absolute;top:calc(50% - 40px);transform:translateY(-50%);width:60px;height:60px;border-radius:50%;border:0;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 14px 30px rgba(21,23,28,.18);transition:background .2s,transform .2s;z-index:2}.rl-arrow:hover{background:var(--accent);transform:translateY(-50%) scale(1.06)}.rl-arrow.prev{left:0}.rl-arrow.next{right:0}.rl-foot{display:flex;align-items:center;gap:20px}.rl-count{font-family:var(--f-mono);font-size:16px;color:var(--muted);white-space:nowrap}.rl-count b{color:var(--ink);font-size:20px}.rl-bar{flex:1 1;height:3px;border-radius:2px;background:var(--line);overflow:hidden}.rl-bar i{display:block;height:100%;background:var(--accent);transition:width .6s}.rl-all{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--ink);white-space:nowrap}.rl-all:hover{color:var(--accent)}@media (max-width:800px){.rl{padding:0;--gap:14px}.rl-card{padding:26px;min-height:0}.rl-card blockquote{font-size:17px}.rl-arrow{width:48px;height:48px;top:auto;bottom:-6px}.rl-arrow,.rl-arrow:hover{transform:none}.rl-arrow.prev{left:auto;right:60px}.rl-foot{padding-right:116px;min-height:48px}.rl-bar{display:none}}.ot-grid{columns:360px 2;column-gap:24px}.ot-grid .ld-quote{page-break-inside:avoid;break-inside:avoid;margin:0 0 24px;padding:36px;gap:18px;scroll-margin-top:24px}.ot-grid .ld-quote blockquote{font-size:18px;line-height:1.6;white-space:pre-wrap}.ot-grid .ld-quote:target{outline:3px solid var(--accent)}.hs-stage{touch-action:pan-y;cursor:-webkit-grab;cursor:grab;-moz-user-select:none;user-select:none;-webkit-user-select:none}.hs-stage.drag{cursor:-webkit-grabbing;cursor:grabbing}.hs-stage.drag .hs-card{transition:none}.hs-card{opacity:max(0,calc(1 - var(--ak) * .42))}.gx{min-height:100vh;background:var(--paper)}.gx-head{position:-webkit-sticky;position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--paper) 92%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.gx-bar{max-width:1100px;margin:0 auto;padding:0 20px;height:68px;display:flex;align-items:center;gap:24px}.gx-tabs{display:flex;gap:4px}.gx-tabs a{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;border-radius:999px;font-weight:600;color:var(--ink-2);white-space:nowrap}.gx-tabs a:hover{background:var(--paper-2);color:var(--ink)}.gx-tabs a.on{background:var(--ink);color:var(--paper)}.gx-tabs-m{display:none;overflow-x:auto;scrollbar-width:none;padding:0 12px 10px}.gx-tabs-m::-webkit-scrollbar{display:none}.gx-login{font-weight:600;color:var(--ink);padding:0 6px}.gx-cta{display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 16px;border-radius:999px;border:1.5px solid var(--accent);background:transparent;color:var(--accent);font:600 15px var(--f-body);cursor:pointer;white-space:nowrap}.gx-cta em{font-style:normal}.gx-cta:hover{background:var(--accent);color:#fff}.gx-main{padding:28px 20px 24px}.gx-col{margin:0 auto;flex-direction:column;gap:18px}.gx-col,.gx-foot{max-width:760px;display:flex}.gx-foot{margin:40px auto 0;padding:20px 0 32px;flex-wrap:wrap;gap:8px 16px;font-size:14px;color:var(--muted);border-top:1px solid var(--line)}.gx-banner{display:flex;gap:12px;align-items:flex-start;padding:14px 16px;border-radius:16px;background:#FFF6DC;color:#4A3600;font-size:15px;line-height:1.5}.gx-link{background:none;border:0;padding:0;font:inherit;font-weight:700;color:var(--accent-ink);text-decoration:underline;cursor:pointer}.gx-promo{gap:14px;padding:16px 18px;border-radius:20px;border:1.5px dashed var(--line);background:transparent}.gx-promo,.gx-promo-ic{display:flex;align-items:center}.gx-promo-ic{width:44px;height:44px;border-radius:14px;background:var(--accent-soft);color:var(--accent);justify-content:center;flex-shrink:0}.gx-modal{width:min(520px,100%);max-height:calc(100vh - 32px);overflow-y:auto;background:var(--ink);border-radius:28px;padding:28px;flex-direction:column;gap:22px}.gx-modal,.gx-x{color:#fff;display:flex}.gx-x{width:38px;height:38px;border-radius:50%;border:0;background:#2A2E38;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0}.gx-x.dark{background:transparent;color:#4A3600;width:28px;height:28px}@media (max-width:760px){.gx-bar{height:60px;gap:10px;padding:0 14px}.gx-tabs-d{display:none}.gx-tabs-m{display:flex}.gx-cta em{display:none}.gx-cta{padding:0 12px;font-size:14px}.gx-bar .brand b{font-size:17px}.gx-login{padding:0 2px}.gx-main{padding:18px 14px 16px}.gx-promo{flex-wrap:wrap}.gx-promo .btn{width:100%}.gx-modal{padding:22px 18px}}.ld-det{height:44px;padding:0 16px;background:transparent;color:var(--ink);border:1.5px solid var(--line);cursor:pointer;font:inherit;font-weight:600}.ld-det:hover{border-color:var(--ink)}.ld-course.dark .ld-det{color:#fff;border-color:#4A4F5C}.ld-course.dark .ld-det:hover{border-color:#fff}.ld-course.sel{outline:2px solid var(--accent);outline-offset:-2px}.ld-prog{margin-top:32px;background:#fff;border:1px solid var(--line);border-radius:28px;padding:44px;display:flex;flex-direction:column;gap:32px;scroll-margin-top:24px;animation:ld-prog-in .35s ease}@keyframes ld-prog-in{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}.ld-prog-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start}.ld-prog-head h3{font-family:var(--f-disp);font-size:34px;line-height:1.15;font-weight:600;letter-spacing:-.02em;margin:0}.ld-prog-x{flex:none;width:44px;height:44px;border-radius:50%;border:1.5px solid var(--line);background:transparent;font-size:26px;line-height:1;cursor:pointer;color:var(--ink)}.ld-prog-x:hover{border-color:var(--ink)}.ld-sample{align-self:flex-start;background:var(--amber);color:#3A2A00;border-radius:8px;padding:4px 10px;font-size:13px;font-weight:600}.ld-mods{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:36px 48px;gap:36px 48px}.ld-mod{display:flex;gap:20px;align-items:flex-start}.ld-mod .ld-num{flex:none;min-width:96px}.ld-mod h4{font-size:21px;line-height:1.3;font-weight:700;margin:0}.ld-mod ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:9px}.ld-mod li{position:relative;padding-left:22px;font-size:16.5px;line-height:1.5;color:var(--ink-2)}.ld-mod li:before{content:"";position:absolute;left:0;top:.6em;width:8px;height:8px;border-radius:50%;background:var(--accent)}.vr{position:relative;aspect-ratio:16/9;border-radius:20px;overflow:hidden;background:var(--night);flex:none}.vr iframe,.vr video{background:#000}.vr iframe,.vr video,.vr-poster{position:absolute;inset:0;width:100%;height:100%;border:0}.vr-poster{padding:0;cursor:pointer;background:linear-gradient(135deg,#2B4EFF,#15171C) 50% /cover no-repeat}.vr-play,.vr-poster{display:flex;align-items:center;justify-content:center}.vr-play{width:76px;height:76px;border-radius:50%;background:rgba(255,255,255,.94);color:var(--ink);box-shadow:0 12px 30px rgba(0,0,0,.3);transition:transform .2s,background .2s}.vr-poster:hover .vr-play{transform:scale(1.08);background:#fff}.vr-poster:focus-visible{outline:3px solid var(--amber);outline-offset:-3px}.vr-demo{position:absolute;left:14px;bottom:12px;color:#fff;font-size:13px;font-family:var(--f-mono);opacity:.85}.ot-grid .ld-quote.vid,.rl-card.vid{padding:24px}.ot-tabs{display:flex;gap:10px;flex-wrap:wrap}.ot-tab{height:46px;padding:0 20px;border-radius:23px;border:1.5px solid var(--line);background:#fff;font:inherit;font-weight:600;color:var(--ink);cursor:pointer;display:inline-flex;align-items:center;gap:8px}.ot-tab span{font-family:var(--f-mono);font-size:14px;color:var(--muted)}.ot-tab.on,.ot-tab:hover{border-color:var(--ink)}.ot-tab.on{background:var(--ink);color:#fff}.ot-tab.on span{color:#C9CCD6}@media (max-width:1100px){.ld-mods{grid-template-columns:1fr}}@media (max-width:700px){.ld-prog{padding:22px 18px;border-radius:22px;gap:24px}.ld-prog-head h3{font-size:24px}.ld-mod{gap:14px}.ld-mod .ld-num{min-width:62px}.vr-play{width:60px;height:60px}}.ld-test{display:grid;grid-template-columns:1.05fr 1fr;grid-gap:48px;gap:48px;align-items:center;padding:56px;border-radius:36px;background:linear-gradient(135deg,#EEF1FF,#F7F4FF);border:1px solid #dce3ff}.ld-test-head{gap:20px}.ld-test-head,.ld-test-pts{display:flex;flex-direction:column}.ld-test-pts{list-style:none;margin:4px 0 0;padding:0;gap:10px;font-size:16px;line-height:1.45;color:var(--ink-2)}.ld-test-pts li{padding-left:28px;position:relative}.ld-test-pts li:before{content:"";position:absolute;left:0;top:3px;width:18px;height:18px;border-radius:50%;background:var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center /12px no-repeat}.ld-test-grades{display:flex;flex-direction:column;gap:14px}.ld-test-card{display:flex;align-items:center;gap:18px;padding:18px 20px;border-radius:24px;background:#fff;border:1px solid var(--line);color:var(--ink);text-decoration:none;transition:transform .15s,box-shadow .15s,border-color .15s}.ld-test-card:hover{transform:translateX(6px);box-shadow:0 14px 34px rgba(43,78,255,.14);border-color:var(--accent)}.ld-test-n{width:64px;height:64px;border-radius:20px;background:var(--accent);color:#fff;font:700 34px var(--f-disp)}.ld-test-go,.ld-test-n{flex:none;display:flex;align-items:center;justify-content:center}.ld-test-go{width:46px;height:46px;border-radius:50%;background:var(--accent-soft);color:var(--accent)}@media (max-width:900px){.ld-test{grid-template-columns:1fr;padding:28px 20px;gap:28px;border-radius:28px}.ld-test-card:hover{transform:none}.ld-test-n{width:52px;height:52px;font-size:28px;border-radius:16px}}