:root{color-scheme:light;--blue:#078bf0;--ink:#101114;--muted:#69717b;--line:#e9edf2}
*{box-sizing:border-box}body{margin:0;background:#fff;color:var(--ink);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased;line-height:1.6}button,a,summary{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #0055a4;outline-offset:5px}h1,h2,h3,p{margin:0}main{padding:0 24px 72px}.hero{max-width:800px;margin:0 auto;padding-top:70px;text-align:center}h1{font-size:42px;font-weight:750;line-height:1.25;letter-spacing:-1px;margin-bottom:38px}.video-frame{width:100%;aspect-ratio:16/9;background:#101114;border-radius:14px;overflow:hidden;box-shadow:0 0 0 1px #00000008}.video-frame iframe{display:block;width:100%;height:100%;border:0}.video-help{text-align:right;font-size:11px;margin-top:9px;line-height:1.6}.video-help a{color:var(--muted);text-decoration:none}.video-help a:hover{text-decoration:underline;color:#005db2}.purchase-button{text-decoration:none;display:block;width:100%;min-height:60px;margin-top:28px;padding:16px 24px;border:0;border-radius:9px;background:var(--blue);color:#fff;font-size:19px;font-weight:650;transition:background .15s}.purchase-button:hover{background:#0075ce}.curriculum{max-width:800px;margin:92px auto 0;scroll-margin-top:30px}.curriculum>h2{text-align:center;font-size:30px;line-height:1.3;font-weight:700}.outline-subtitle{text-align:center;margin:12px 0 35px;color:var(--muted);font-size:14px;letter-spacing:1px}
@media(max-width:600px){main{padding:0 18px 45px}.hero{padding-top:40px}h1{font-size:29px;letter-spacing:-.5px;margin-bottom:27px}.video-frame{border-radius:9px}.video-help{font-size:10px}.purchase-button{min-height:54px;margin-top:22px;font-size:17px}.curriculum{margin-top:60px}.curriculum>h2{font-size:26px}.outline-subtitle{font-size:12px;margin-bottom:25px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}


.poster-link{display:block;line-height:0;border-radius:10px;overflow:hidden}.course-poster{display:block;width:100%;height:auto}.poster-hint{text-align:center;color:var(--muted);font-size:12px;margin-top:14px}

.research-benefit{max-width:800px;margin:64px auto 0;border-radius:16px;overflow:hidden;background:#181a20;color:#f5f5f5;scroll-margin-top:24px}.benefit-header{padding:48px 44px 36px;background:linear-gradient(135deg,#24262d,#181a20 75%)}.benefit-label{color:#f0b90b;font-size:15px;font-weight:700;letter-spacing:2px;margin-bottom:12px}.benefit-header h2{font-size:36px;line-height:1.3;letter-spacing:-.5px}.benefit-value{margin-top:20px;color:#b7bdc6;font-size:17px}.benefit-value strong{color:#e8ebee}.benefit-offer{font-size:24px;line-height:1.5;margin-top:20px}.benefit-offer strong{color:#f0b90b}.benefit-intro{color:#c8cdd5;font-size:16px;line-height:1.9;margin-top:20px}.benefit-content{padding:0 44px 40px}.benefit-row{border-top:1px solid #353840;padding:30px 0}.benefit-row h3{display:flex;align-items:baseline;gap:16px;font-size:21px;line-height:1.5;margin-bottom:18px}.benefit-row h3 span{color:#f0b90b;font-size:16px;font-variant-numeric:tabular-nums}.benefit-row p{font-size:15px;color:#c8cdd5;line-height:1.9}.benefit-row p+p{margin-top:12px}.research-platforms strong{color:#f5f5f5;font-size:16px}.market-columns{display:grid;grid-template-columns:1fr 1fr;gap:28px}.market-columns h4{margin:0 0 10px;font-size:18px;color:#f0b90b}.benefit-row .benefit-emphasis{color:#f5f5f5;font-size:18px}.benefit-row .annual-value{font-size:19px;color:#f5f5f5}.annual-value strong{font-size:30px;color:#f0b90b;white-space:nowrap}.benefit-list{padding-left:22px;margin:18px 0 0;color:#e1e4e9;font-size:15px;line-height:2}.benefit-list li::marker{color:#f0b90b}.benefit-closing{border-top:1px solid #353840;padding-top:28px;font-size:18px;font-weight:600;line-height:1.9}.benefit-purchase{background:#f0b90b;color:#181a20;text-align:center}.benefit-purchase:hover{background:#ffd147}.research-benefit a:focus-visible{outline-color:#fff}.mobile-break{display:none}
@media(max-width:600px){.research-benefit{margin-top:42px;border-radius:12px}.benefit-header{padding:30px 24px 26px}.benefit-header h2{font-size:27px}.benefit-label{font-size:13px}.benefit-value{font-size:14px}.benefit-offer{font-size:22px}.mobile-break{display:block}.benefit-intro{font-size:14px}.benefit-content{padding:0 24px 28px}.benefit-row{padding:25px 0}.benefit-row h3{font-size:19px;gap:12px}.market-columns{grid-template-columns:1fr;gap:22px}.benefit-row p,.benefit-list{font-size:14px}.research-platforms strong{font-size:15px}.benefit-closing{font-size:16px}.annual-value strong{font-size:27px}}
.purchase-qr{margin:28px auto 0;text-align:center}.purchase-qr h2{font-size:24px;margin-bottom:18px}.qr-pair{display:flex;justify-content:center;gap:34px}.qr-pair figure{margin:0;width:190px;max-width:44%}.qr-window{display:block;position:relative;width:100%;aspect-ratio:1;background:#fff;overflow:hidden;border-radius:8px;border:1px solid #e9edf2}.qr-window img{position:absolute;max-width:none;height:auto}.wechat-qr img{width:132.934%;left:-16.467%;top:-41.617%}.telegram-qr img{width:169.565%;left:-34.783%;top:-126.812%}.qr-pair figcaption{font-size:14px;font-weight:600;margin-top:8px;color:#69717b}.bottom-purchase{max-width:800px;margin:42px auto 0;padding-top:10px}.social-links{display:flex;justify-content:center;gap:30px;margin-top:30px}.social-links a{display:flex;align-items:center;gap:9px;color:#181a20;text-decoration:none;font-size:15px;font-weight:600;padding:8px}.social-links a:hover{color:#0066ab}.social-links svg{width:27px;height:27px}.research-benefit{max-width:800px;margin-top:48px;background:transparent;color:#181a20;overflow:visible}.benefit-header{padding:0 0 22px;background:none;text-align:center}.benefit-header h2{font-size:32px}.benefit-header .benefit-label{font-size:20px;letter-spacing:0;color:#5f6874;margin:8px 0 0}.benefit-value{color:#69717b;margin-top:12px}.benefit-value strong{color:#181a20}.benefit-offer{font-size:22px;margin-top:10px}.benefit-offer strong{color:#9b7000}.benefit-intro{font-size:14px;color:#69717b;margin:12px auto 0;max-width:650px;line-height:1.7}.benefit-content{padding:0}.benefit-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.benefit-row{aspect-ratio:1;min-width:0;padding:30px;border:1px solid #31353d;border-radius:22px;background:#181a20;color:#f5f5f5;box-shadow:0 10px 24px #10111420;display:flex;flex-direction:column;justify-content:center}.benefit-row h3{font-size:21px;margin-bottom:14px}.benefit-row p{font-size:14px;line-height:1.7}.benefit-row p+p{margin-top:10px}.market-columns{display:block}.market-columns>div+div{margin-top:12px}.market-columns h4{font-size:16px;margin-bottom:5px}.research-platforms strong{font-size:15px}.benefit-list{font-size:14px;line-height:1.9}.benefit-closing{text-align:center;border:0;padding:0;margin:25px auto 0;font-size:18px;line-height:1.7}.curriculum{margin-top:50px}
@media(max-width:760px){.benefit-row{padding:22px}.benefit-row h3{font-size:18px}.benefit-row p{font-size:13px}.research-platforms strong{font-size:13px}.benefit-grid{gap:16px}}
@media(max-width:600px){.purchase-qr h2{font-size:22px}.qr-pair{gap:22px}.qr-pair figure{width:155px}.research-benefit{margin-top:36px}.benefit-header{padding:0 0 20px}.benefit-header h2{font-size:28px}.benefit-header .benefit-label{font-size:18px}.benefit-offer{font-size:20px}.benefit-intro{font-size:14px}.benefit-grid{grid-template-columns:1fr;gap:16px}.benefit-row{padding:26px;aspect-ratio:1}.benefit-row h3{font-size:20px}.benefit-row p,.benefit-list{font-size:14px}.research-platforms strong{font-size:15px}.benefit-closing{font-size:16px;margin-top:20px}.benefit-content{padding:0}.bottom-purchase{margin-top:28px}}
.benefit-header h2{font-size:24px}.benefit-header .benefit-label{font-size:48px;font-weight:800;line-height:1.25;color:#a76800;margin:10px 0 0}.benefit-offer{display:flex;justify-content:center;align-items:baseline;flex-wrap:wrap;gap:8px 14px;font-size:22px}.benefit-offer strong{font-size:26px;color:#a76800}.benefit-offer .mobile-break{display:none}.benefit-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;background:radial-gradient(ellipse at 15% 25%,#dfe7f144,transparent 65%),radial-gradient(ellipse at 85% 80%,#d7dfe755,transparent 65%);border-radius:20px}.benefit-row{aspect-ratio:auto;padding:22px;border:1px solid #ffffffdd;border-radius:18px;background:linear-gradient(135deg,#f7f9fbe6,#e9edf2b8);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);color:#242932;box-shadow:0 5px 16px #26384f14,inset 0 1px 0 #fff;justify-content:flex-start}.benefit-row h3{font-size:18px;gap:10px;margin-bottom:12px}.benefit-row h3 span{color:#9a6a00}.benefit-row p{font-size:14px;line-height:1.65;color:#4b5563}.research-platforms strong{font-size:14px;color:#242932}.market-columns h4{font-size:15px;color:#976300}.benefit-row .benefit-emphasis{font-size:15px;color:#242932}.benefit-row .annual-value{font-size:16px;color:#242932}.annual-value strong{font-size:25px;color:#9a6a00}.benefit-list{font-size:14px;color:#4b5563;line-height:1.75;margin-top:12px}.benefit-list li::marker{color:#9a6a00}.benefit-closing{font-size:54px;line-height:1.4;margin-top:30px;letter-spacing:-1px}.benefit-closing br{display:none}
@media(max-width:600px){.benefit-header h2{font-size:20px}.benefit-header .benefit-label{font-size:40px}.benefit-offer{font-size:18px;gap:4px 10px}.benefit-offer strong{font-size:22px}.benefit-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.benefit-row{padding:15px 12px;border-radius:15px;aspect-ratio:auto}.benefit-row h3{font-size:15px;gap:6px;line-height:1.45;margin-bottom:10px;align-items:flex-start}.benefit-row h3 span{font-size:11px;padding-top:2px}.benefit-row p,.research-platforms strong,.benefit-list{font-size:12px;line-height:1.6;overflow-wrap:anywhere}.benefit-row p+p{margin-top:8px}.market-columns h4{font-size:13px;margin-bottom:4px}.market-columns>div+div{margin-top:9px}.benefit-row .benefit-emphasis{font-size:13px}.benefit-row .annual-value{font-size:13px}.annual-value strong{font-size:22px}.benefit-list{padding-left:15px;margin-top:10px}.benefit-closing{font-size:48px;line-height:1.4;margin-top:24px;letter-spacing:-1px}}
.benefit-closing,.benefit-header .benefit-label{text-wrap:balance}
.benefit-grid{background:none;gap:16px}.benefit-row{background:#f2f2f2;border:0;border-radius:26px;box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none;padding:24px;color:#111}.benefit-row h3{color:#111;font-weight:750}.benefit-row h3 span{color:#111;font-weight:600;font-size:13px}.benefit-row p,.benefit-list{color:#4a4a4a}.research-platforms strong,.benefit-row .benefit-emphasis{color:#111}.market-columns h4{color:#111}.social-links{justify-content:flex-end;gap:10px;margin-top:28px}.social-links a{justify-content:center;padding:10px;width:46px;height:46px;border-radius:50%;color:#111}.social-links a:hover{background:#f2f2f2;color:#111}.social-links svg{width:26px;height:26px}
@media(max-width:600px){.benefit-grid{gap:10px}.benefit-row{padding:16px 13px;border-radius:22px}.benefit-row h3{font-size:15px}.benefit-row h3 span{font-size:11px}.social-links{margin-top:22px}}
.benefit-main-title{text-align:center;font-size:24px;line-height:1.4}.research-benefit>.benefit-intro{text-align:center;margin:12px auto 25px}.benefit-showcase{position:relative;padding-bottom:48px}.phone-shell{position:absolute;z-index:0;top:0;bottom:0;left:50%;transform:translateX(-50%);width:600px;max-width:90%;background:#fff;border:10px solid #111;border-radius:50px;box-shadow:0 6px 18px #1111110d;pointer-events:none}.phone-camera{position:absolute;top:-1px;left:50%;transform:translateX(-50%);width:126px;height:24px;background:#111;border-radius:0 0 18px 18px}.phone-home{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);width:100px;height:4px;background:#111;border-radius:4px}.phone-copy{position:relative;z-index:1;max-width:560px;width:85%;margin:auto;padding:64px 10px 30px;min-height:250px}.phone-copy .benefit-label{font-size:48px;line-height:1.25;margin:0}.phone-copy .benefit-value{margin-top:17px}.phone-copy .benefit-offer{margin-top:13px;gap:4px 12px}.benefit-grid{position:relative;z-index:2}.benefit-closing{font-size:clamp(18px,2.15vw,24px);line-height:1.5;letter-spacing:0;white-space:nowrap;text-wrap:initial;margin:27px -16px 0}.benefit-closing span{display:inline}
@media(max-width:600px){.benefit-main-title{font-size:20px}.research-benefit>.benefit-intro{font-size:12px;max-width:340px;margin:10px auto 20px}.phone-shell{border-width:7px;border-radius:38px;max-width:94%}.phone-camera{width:95px;height:20px}.phone-copy{width:88%;padding:48px 6px 22px;min-height:240px}.phone-copy .benefit-label{font-size:40px;line-height:1.2}.phone-copy .benefit-value{font-size:12px;white-space:nowrap;margin-top:13px}.phone-copy .benefit-offer{font-size:16px;gap:2px 5px;margin-top:9px}.phone-copy .benefit-offer strong{font-size:20px}.benefit-showcase{padding-bottom:38px}.phone-home{bottom:9px;height:3px;width:85px}.benefit-closing{font-size:clamp(14px,4.15vw,18px);line-height:1.65;margin:22px -5px 0;white-space:normal}.benefit-closing span{display:block;white-space:nowrap}}
.benefit-row h3,.benefit-row h3 span{color:#a76800}
.phone-copy .benefit-label{text-shadow:0 2px 0 #fff,0 4px 10px rgba(137,83,0,.24)}

/* A separate introductory section keeps the existing course layout intact. */
.offer-hero{margin:0 -24px;background:#fff;text-align:center;padding-top:76px;overflow:hidden;isolation:isolate}
.offer-brand{font-size:15px;font-weight:700;letter-spacing:3px;margin-bottom:25px;color:#424745}
.offer-hero h1{font-size:clamp(42px,5.2vw,68px);line-height:1.2;letter-spacing:-2px;margin:0 20px 18px;font-weight:800;color:#111513}
.offer-english{font-size:clamp(16px,2vw,24px);line-height:1.4;font-weight:500;color:#626762;margin:0 20px 30px;letter-spacing:.4px}
.offer-actions{display:flex;justify-content:center;gap:12px;padding:0 20px}
.offer-actions a{display:inline-flex;align-items:center;justify-content:center;gap:20px;min-height:50px;padding:13px 26px;border-radius:100px;font-size:15px;font-weight:650;text-decoration:none;transition:transform .2s,background .2s}
.offer-primary{background:#151917;color:#fff;border:1px solid #151917}.offer-secondary{background:transparent;color:#151917;border:1px solid #d8dcd8}
.offer-actions a:hover{transform:translateY(-2px)}.offer-secondary:hover{background:#e9ece7}.offer-primary:hover{background:#343d37}
.offer-actions a:focus-visible{outline:3px solid #7a958c;outline-offset:5px}
.offer-art{position:relative;height:342px;margin:54px auto 0;max-width:1320px}
.offer-card{position:absolute;bottom:-40px;left:50%;width:240px;height:280px;border:0;border-radius:30px 30px 0 0;background:linear-gradient(115deg,#d8dce0 0%,#f4f5f6 24%,#e3e6e9 47%,#d4d9de 69%,#eff1f3 100%);box-shadow:0 12px 30px rgba(41,50,61,.15),0 3px 8px rgba(41,50,61,.07),inset 0 2px 2px rgba(255,255,255,.95),inset -2px 0 3px rgba(91,103,116,.13);display:flex;align-items:flex-start;justify-content:center;padding-top:18px;overflow:hidden}
.offer-card>svg{width:100%;height:230px;flex-shrink:0;padding:4px 9px}

.offer-card-1{transform:translateX(calc(-50% - 540px)) translateY(140px);z-index:1}
.offer-card-2{transform:translateX(calc(-50% - 370px)) translateY(88px);z-index:2}
.offer-card-3{transform:translateX(calc(-50% - 195px)) translateY(42px);z-index:3}
.offer-card-4{width:300px;height:340px;transform:translateX(-50%);z-index:4;padding-top:34px}.offer-card-4>svg{height:260px}
.offer-card-5{transform:translateX(calc(-50% + 195px)) translateY(42px);z-index:3}
.offer-card-6{transform:translateX(calc(-50% + 370px)) translateY(88px);z-index:2}
.offer-card-7{transform:translateX(calc(-50% + 540px)) translateY(140px);z-index:1}
.hero>#page-title{font-size:42px;font-weight:750;line-height:1.25;letter-spacing:-1px;margin-bottom:38px}
#course-intro,#purchase{scroll-margin-top:30px}
@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
@media(max-width:600px){.offer-hero{margin:0 -18px;padding-top:54px}.offer-brand{font-size:12px;letter-spacing:2px;margin-bottom:23px}.offer-hero h1{font-size:39px;letter-spacing:-1.5px;margin-bottom:14px}.offer-actions{gap:10px}.offer-actions a{font-size:14px;min-height:46px;padding:11px 21px;gap:16px}.offer-art{height:225px;margin-top:44px}.offer-card{width:154px;height:190px;border-radius:22px 22px 0 0;bottom:-26px;padding-top:12px}.offer-card>svg{height:154px}.offer-card-1{transform:translateX(calc(-50% - 324px)) translateY(95px)}.offer-card-2{transform:translateX(calc(-50% - 222px)) translateY(62px)}.offer-card-3{transform:translateX(calc(-50% - 117px)) translateY(29px)}.offer-card-4{width:190px;height:225px;padding-top:20px}.offer-card-4>svg{height:175px}.offer-card-5{transform:translateX(calc(-50% + 117px)) translateY(29px)}.offer-card-6{transform:translateX(calc(-50% + 222px)) translateY(62px)}.offer-card-7{transform:translateX(calc(-50% + 324px)) translateY(95px)}.hero>#page-title{font-size:29px;letter-spacing:-.5px;margin-bottom:27px}}
@media(max-width:360px){.offer-hero h1{font-size:34px}}