@import url("https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;600;700;800&display=swap");.xstudy-site{--xs-primary:#4f46e5;--xs-primary-dark:#3730a3;--xs-accent:#818cf8;--xs-tint:#eef2ff;--xs-gold:#f59e0b;--xs-gold-tint:#fffbeb;--xs-green:#10b981;--xs-green-tint:#ecfdf5;--xs-page:#f9fafb;--xs-ink:#111827;--xs-body:#374151;--xs-muted:#6b7280;--xs-border:#e5e7eb;min-height:100vh;background:#fff;color:var(--xs-ink);font-family:Plus Jakarta Sans,PingFang SC,Microsoft YaHei,sans-serif}.xstudy-site *,.xstudy-site :after,.xstudy-site :before{box-sizing:border-box}.xstudy-site a{text-decoration:none}.xstudy-site a:focus-visible,.xstudy-site button:focus-visible{outline:2px solid var(--xs-primary);outline-offset:4px}.xstudy-container{width:min(1160px,calc(100% - 40px));margin:0 auto}.xstudy-header{position:sticky;top:0;z-index:40;border-bottom:1px solid rgba(229,231,235,.85);background:rgba(255,255,255,.9);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.xstudy-header-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}.xstudy-brand{display:inline-flex;align-items:center;gap:12px;color:var(--xs-ink)}.xstudy-brand img{border-radius:10px;box-shadow:0 5px 16px rgba(23,56,71,.14)}.xstudy-brand span{display:grid;gap:1px}.xstudy-brand strong{font-size:20px;line-height:1.1;letter-spacing:-.03em}.xstudy-brand small{color:var(--xs-muted);font-size:12px}.xstudy-header nav{display:flex;align-items:center;gap:30px}.xstudy-back,.xstudy-header nav a{color:var(--xs-body);font-size:14px;font-weight:600;transition:color .2s ease}.xstudy-back:hover,.xstudy-header nav a:hover{color:var(--xs-primary)}.xstudy-back{display:inline-flex;gap:8px;align-items:center}.xstudy-back svg{width:18px;height:18px}.xstudy-hero{position:relative;overflow:hidden;padding:84px 0 72px;background:linear-gradient(180deg,#fff 0,var(--xs-page) 100%)}.xstudy-hero:before{content:"";position:absolute;width:520px;height:520px;border-radius:50%;right:-220px;top:-270px;background:radial-gradient(circle,rgba(129,140,248,.24),rgba(129,140,248,0) 68%)}.xstudy-hero-grid{position:relative;display:grid;grid-template-columns:.82fr 1.18fr;gap:64px;align-items:center}.xstudy-eyebrow{display:inline-flex;align-items:center;gap:8px;width:-moz-fit-content;width:fit-content;padding:7px 12px;border-radius:999px;color:var(--xs-primary-dark);background:var(--xs-tint);font-size:13px;font-weight:700;letter-spacing:.02em}.xstudy-eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--xs-green);box-shadow:0 0 0 4px rgba(16,185,129,.12)}.xstudy-hero h1{max-width:620px;margin:24px 0 22px;font-size:clamp(42px,5.5vw,72px);line-height:1.05;letter-spacing:-.055em}.xstudy-hero h1 em{color:var(--xs-primary);font-style:normal}.xstudy-hero-copy>p{max-width:570px;margin:0;color:var(--xs-body);font-size:18px;line-height:1.75}.xstudy-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:30px}.xstudy-button{display:inline-flex;min-height:48px;align-items:center;justify-content:center;gap:8px;border:0;border-radius:8px;padding:12px 22px;background:var(--xs-primary);color:#fff;font-weight:700;font-size:15px;transition:transform .2s ease,background .2s ease,box-shadow .2s ease}.xstudy-button:hover{transform:translateY(-2px);background:var(--xs-primary-dark);box-shadow:0 8px 24px rgba(79,70,229,.2)}.xstudy-button.outline{border:2px solid var(--xs-primary);background:#fff;color:var(--xs-primary)}.xstudy-button.outline:hover{background:var(--xs-tint)}.xstudy-button svg{width:18px;height:18px}.xstudy-platform{margin-top:18px;color:var(--xs-muted);font-size:13px}.xstudy-window{position:relative;padding:12px;border:1px solid var(--xs-border);border-radius:20px;background:rgba(255,255,255,.9);box-shadow:0 28px 70px rgba(17,24,39,.16);transform:rotate(1.2deg)}.xstudy-window img{display:block;width:100%;height:auto;border-radius:12px}.xstudy-window-badge{position:absolute;left:-24px;bottom:34px;display:flex;align-items:center;gap:10px;padding:12px 16px;border:1px solid #d1fae5;border-radius:12px;background:#fff;box-shadow:0 12px 36px rgba(17,24,39,.13);color:var(--xs-body);font-size:13px;font-weight:700}.xstudy-window-badge span{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--xs-green-tint);color:var(--xs-green)}.xstudy-proof{border-bottom:1px solid var(--xs-border);background:#fff}.xstudy-proof-grid{display:grid;grid-template-columns:repeat(3,1fr)}.xstudy-proof-grid div{padding:24px 32px;text-align:center;border-right:1px solid var(--xs-border)}.xstudy-proof-grid div:last-child{border-right:0}.xstudy-proof strong{display:block;font-size:18px}.xstudy-proof span{color:var(--xs-muted);font-size:13px}.xstudy-section{padding:80px 0}.xstudy-section.muted{background:var(--xs-page)}.xstudy-section-heading{max-width:680px;margin:0 auto 46px;text-align:center}.xstudy-section-heading.left{margin-left:0;text-align:left}.xstudy-section-heading h2{margin:14px 0 12px;font-size:clamp(30px,4vw,44px);line-height:1.15;letter-spacing:-.04em}.xstudy-section-heading p{margin:0;color:var(--xs-muted);font-size:16px;line-height:1.7}.xstudy-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.xstudy-feature-card{overflow:hidden;border:1px solid var(--xs-border);border-radius:12px;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.08);transition:transform .2s ease,box-shadow .2s ease}.xstudy-feature-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(79,70,229,.1)}.xstudy-feature-visual{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--xs-tint)}.xstudy-feature-visual img{width:100%;height:100%;-o-object-fit:cover;object-fit:cover}.xstudy-feature-card:nth-child(2) img{-o-object-position:center;object-position:center}.xstudy-feature-content{padding:18px}.xstudy-tag{display:inline-flex;align-items:center;border-radius:999px;padding:5px 10px;background:var(--xs-tint);color:var(--xs-primary);font-size:11px;font-weight:800;letter-spacing:.05em;text-transform:uppercase}.xstudy-feature-content h3{margin:14px 0 8px;font-size:20px;letter-spacing:-.02em}.xstudy-feature-content p{margin:0;color:var(--xs-muted);font-size:16px;line-height:1.7}.xstudy-workflow{display:grid;grid-template-columns:.85fr 1.15fr;gap:64px;align-items:center}.xstudy-steps{display:grid;gap:18px;margin-top:32px}.xstudy-step{display:grid;grid-template-columns:28px 1fr;gap:14px;align-items:start}.xstudy-step-number{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--xs-primary);color:#fff;font-size:12px;font-weight:800}.xstudy-step h3{margin:1px 0 5px;font-size:18px}.xstudy-step p{margin:0;color:var(--xs-muted);font-size:16px;line-height:1.6}.xstudy-progress{margin-top:30px}.xstudy-progress-label{display:flex;justify-content:space-between;margin-bottom:8px;color:var(--xs-primary);font-size:13px;font-weight:700}.xstudy-progress-track{height:8px;border-radius:999px;background:var(--xs-border);overflow:hidden}.xstudy-progress-track i{display:block;width:72%;height:100%;border-radius:inherit;background:var(--xs-primary)}.xstudy-device-stack{position:relative;min-height:480px}.xstudy-device-stack figure{position:absolute;margin:0;padding:10px;border:1px solid var(--xs-border);border-radius:16px;background:#fff;box-shadow:0 20px 55px rgba(17,24,39,.14)}.xstudy-device-stack figure:first-child{inset:0 15% 18% 0;transform:rotate(-2deg)}.xstudy-device-stack figure:last-child{inset:18% 0 0 25%;transform:rotate(3deg)}.xstudy-device-stack img{width:100%;height:100%;border-radius:9px;-o-object-fit:cover;object-fit:cover}.xstudy-privacy-callout{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px;border:1px solid #d1fae5;border-radius:16px;padding:28px 32px;background:var(--xs-green-tint)}.xstudy-privacy-icon{display:grid;place-items:center;width:54px;height:54px;border-radius:12px;background:#fff;color:var(--xs-green);box-shadow:0 5px 16px rgba(16,185,129,.12)}.xstudy-privacy-icon svg{width:26px;height:26px}.xstudy-privacy-callout h2{margin:0 0 6px;font-size:22px}.xstudy-privacy-callout p{margin:0;color:var(--xs-body);line-height:1.65}.xstudy-cta{padding:30px 0 80px}.xstudy-cta-card{overflow:hidden;position:relative;padding:52px;border-radius:18px;background:var(--xs-primary);color:#fff}.xstudy-cta-card:after{content:"";position:absolute;width:280px;height:280px;border-radius:50%;right:-80px;top:-120px;background:rgba(255,255,255,.1)}.xstudy-cta-card h2{position:relative;margin:0 0 12px;font-size:34px;letter-spacing:-.035em}.xstudy-cta-card p{position:relative;max-width:600px;margin:0 0 26px;color:rgba(255,255,255,.82)}.xstudy-cta-card .xstudy-button{position:relative;background:var(--xs-gold);color:#fff}.xstudy-cta-card .xstudy-button:hover{background:#d97706}.xstudy-footer{border-top:1px solid var(--xs-border);padding:42px 0;background:var(--xs-page)}.xstudy-footer-grid{display:grid;grid-template-columns:1.3fr 1fr auto;gap:40px;align-items:start}.xstudy-footer p{margin:14px 0 0;max-width:420px;color:var(--xs-muted);font-size:13px;line-height:1.65}.xstudy-footer-links{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px}.xstudy-footer-links a,.xstudy-footer-meta a{color:var(--xs-body);font-size:13px}.xstudy-footer-links a:hover,.xstudy-footer-meta a:hover{color:var(--xs-primary)}.xstudy-footer-meta{text-align:right}.xstudy-footer-meta p{margin-top:0}.xstudy-document-hero{padding:64px 0 48px;background:linear-gradient(180deg,var(--xs-tint),#fff);text-align:center}.xstudy-document-icon{display:grid;place-items:center;width:60px;height:60px;margin:0 auto 20px;border-radius:14px;background:#fff;color:var(--xs-primary);box-shadow:0 8px 26px rgba(79,70,229,.12)}.xstudy-document-icon svg{width:28px;height:28px}.xstudy-document-hero h1{margin:0 0 12px;font-size:42px;letter-spacing:-.04em}.xstudy-document-hero p{margin:0;color:var(--xs-muted);font-size:14px}.xstudy-document-wrap{padding:44px 0 80px;background:var(--xs-page)}.xstudy-document{max-width:840px;margin:0 auto;border:1px solid var(--xs-border);border-radius:14px;padding:44px;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.06)}.xstudy-document .lead{margin:0 0 32px;border-left:4px solid var(--xs-primary);border-radius:0 8px 8px 0;padding:18px 20px;background:var(--xs-tint);color:var(--xs-body);line-height:1.75}.xstudy-document section{margin-top:34px}.xstudy-document h2{margin:0 0 14px;font-size:21px;letter-spacing:-.02em}.xstudy-document h3{margin:22px 0 10px;font-size:16px}.xstudy-document li,.xstudy-document p{color:var(--xs-body);font-size:16px;line-height:1.85}.xstudy-document ol,.xstudy-document ul{padding-left:22px}.xstudy-document a{color:var(--xs-primary)}.xstudy-info-box{margin:18px 0;border:1px solid var(--xs-border);border-radius:10px;padding:18px;background:var(--xs-page)}.xstudy-info-box.green{border-color:#d1fae5;background:var(--xs-green-tint)}.xstudy-info-box.gold{border-color:#fde68a;background:var(--xs-gold-tint)}.xstudy-plan-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}.xstudy-plan{border:1px solid var(--xs-border);border-radius:12px;padding:20px}.xstudy-plan.featured{border:2px solid var(--xs-primary);background:var(--xs-tint)}.xstudy-plan strong{display:block;margin-bottom:6px}.xstudy-plan span{color:var(--xs-muted);font-size:13px}.xstudy-faq{display:grid;gap:14px}.xstudy-faq article{border:1px solid var(--xs-border);border-radius:12px;padding:22px;background:#fff}.xstudy-faq h2{margin:0 0 8px;font-size:18px}.xstudy-faq p{margin:0;color:var(--xs-muted);line-height:1.7}@media (max-width:900px){.xstudy-hero-grid,.xstudy-workflow{grid-template-columns:1fr}.xstudy-hero-grid{gap:46px}.xstudy-feature-grid{grid-template-columns:1fr 1fr}.xstudy-feature-card:last-child{grid-column:1/-1}.xstudy-device-stack{min-height:560px}.xstudy-footer-grid{grid-template-columns:1fr 1fr}.xstudy-footer-meta{grid-column:1/-1;text-align:left}}@media (max-width:640px){.xstudy-container{width:min(100% - 28px,1160px)}.xstudy-header-inner{min-height:64px}.xstudy-header nav{gap:16px}.xstudy-back span,.xstudy-header nav a:nth-child(2){display:none}.xstudy-hero{padding:54px 0 48px}.xstudy-hero h1{font-size:43px}.xstudy-hero-copy>p{font-size:16px}.xstudy-window{transform:none}.xstudy-window-badge{left:14px;bottom:-24px}.xstudy-proof{padding-top:18px}.xstudy-proof-grid{grid-template-columns:1fr}.xstudy-proof-grid div{padding:14px;border-right:0;border-bottom:1px solid var(--xs-border)}.xstudy-proof-grid div:last-child{border-bottom:0}.xstudy-section{padding:58px 0}.xstudy-feature-grid{grid-template-columns:1fr}.xstudy-feature-card:last-child{grid-column:auto}.xstudy-device-stack{min-height:390px}.xstudy-device-stack figure:first-child{inset:0 8% 22% 0}.xstudy-device-stack figure:last-child{inset:23% 0 0 18%}.xstudy-privacy-callout{grid-template-columns:auto 1fr;padding:22px}.xstudy-privacy-callout .xstudy-button{grid-column:1/-1;width:100%}.xstudy-cta-card{padding:34px 24px}.xstudy-footer-grid{grid-template-columns:1fr}.xstudy-footer-meta{grid-column:auto}.xstudy-footer-links{grid-template-columns:1fr 1fr}.xstudy-document-hero{padding:46px 0 36px}.xstudy-document-hero h1{font-size:34px}.xstudy-document{padding:26px 20px}.xstudy-plan-grid{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){.xstudy-site *,.xstudy-site :after,.xstudy-site :before{scroll-behavior:auto;transition-duration:.01ms}}