:root{--ink:#1d2945;--muted:#63718b;--border:#e6ebf4;--soft:#f5f8fd;--blue:#2980FE;--hover:#1768E8;--gradient:linear-gradient(90deg, #3558F2 0%, #7B4EF1 50%, #B84DDA 100%)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font:400 16px/1.78 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}a{color:#315fe9;text-decoration:none}a:hover{text-decoration:underline}a:focus-visible,summary:focus-visible{outline:3px solid #ffba4b;outline-offset:3px}img{display:block;max-width:100%;height:auto}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.23;letter-spacing:-.025em;font-weight:600}h1{font-size:clamp(2rem,4.1vw,3.45rem)}h2{font-size:clamp(1.75rem,3vw,2.3rem)}h3{font-size:1.18rem}p{color:var(--muted)}.container{width:min(1200px,calc(100% - 48px));margin-inline:auto}.skip{position:absolute;top:-80px;left:12px;z-index:200;background:#fff;padding:9px}.skip:focus{top:6px}.site-header{position:relative;background:#fff;border-bottom:1px solid var(--border);z-index:10}.nav-wrap{min-height:82px;display:flex;gap:24px;justify-content:space-between;align-items:center}.brand{display:flex;align-items:center;gap:11px;color:#21345b;font-weight:700;font-size:23px;white-space:nowrap}.brand:hover{text-decoration:none}.brand img{width:42px;height:42px;object-fit:contain;border-radius:10px}.brand-light{color:#5e59d5}.desktop-nav{display:flex;align-items:center;gap:clamp(10px,1.65vw,25px)}.desktop-nav a{color:#46536f;font-size:14px;white-space:nowrap}.desktop-nav a[aria-current]{color:#3558f2;font-weight:700}.mobile-nav{display:none}.download-btn{display:inline-flex;min-height:48px;padding:11px 32px;align-items:center;justify-content:center;border-radius:12px;background:#2980FE;color:#fff!important;font-weight:600;box-shadow:0 9px 22px rgba(41,128,254,.17);text-decoration:none!important;transition:background .2s,transform .2s}.download-btn:hover{background:#1768E8;transform:translateY(-2px)}.eyebrow{font-size:13px;font-weight:700;letter-spacing:.09em;color:#4969de;margin-bottom:17px}.hero{background:var(--gradient);color:#fff;overflow:hidden}.hero-inner{min-height:595px;display:grid;grid-template-columns:1fr 1.12fr;align-items:center;gap:40px;padding:60px 0}.hero h1{color:#fff;margin-bottom:23px}.hero p{color:rgba(255,255,255,.91);max-width:540px;font-size:17px}.hero .eyebrow{color:#e8e7ff}.hero-note{font-size:13px!important;margin-top:15px}.hero-art{position:relative;padding:16px}.hero-art img{width:100%;max-height:475px;object-fit:contain;filter:drop-shadow(0 26px 38px rgba(38,34,107,.18))}.hero-art:before{content:"";position:absolute;inset:10% 6%;border-radius:50%;background:rgba(255,255,255,.12);filter:blur(45px)}.hero-art img{position:relative}.benefit-band{border-bottom:1px solid var(--border);background:#fff}.benefit-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;padding:27px 0}.benefit-grid div{font-weight:600;font-size:15px}.benefit-grid span{display:block;color:var(--muted);font-size:13px;font-weight:400}.section{padding:clamp(60px,7vw,100px) 0}.section.soft{background:var(--soft)}.section-intro{max-width:750px;margin-bottom:40px}.section-intro p{font-size:16px}.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:23px}.feature-item{padding:28px 25px;border:1px solid var(--border);border-radius:18px;background:#fff}.feature-item .number{color:#6382f2;font-weight:700;font-size:13px}.feature-item h3{margin:15px 0 10px}.feature-item p{margin-bottom:12px;font-size:14px}.feature-item a,.text-link{font-size:14px;font-weight:600}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:center;gap:clamp(40px,6vw,95px)}.split.reverse .visual{order:2}.split .visual{min-width:0}.visual-frame{border-radius:30px;background:#eaf0ff;min-height:300px;display:grid;place-items:center;padding:25px;overflow:hidden}.visual-frame.lilac{background:#f2edff}.visual-frame img{max-height:420px;width:100%;object-fit:contain}.split-copy p{max-width:560px}.mini-list{padding:0;list-style:none}.mini-list li{border-top:1px solid var(--border);padding:11px 0;color:#495877}.mini-list li:before{content:'✓';color:#4671ff;margin-right:12px}.scene-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:21px}.scene{background:#fff;border:1px solid var(--border);border-radius:18px;padding:28px}.scene:first-child{background:#e6ecff}.scene h3{margin-bottom:10px}.scene p{font-size:14px}.scene a{font-weight:600;font-size:14px}.device-row{display:grid;grid-template-columns:1.05fr 1fr;align-items:center;gap:55px}.device-tags{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0}.device-tags span{padding:8px 15px;border:1px solid #cfd9ec;border-radius:999px;background:#fff;font-size:14px}.device-img{max-height:330px;object-fit:contain;margin:auto}.faq-list{max-width:850px}.faq-list details{border-bottom:1px solid #dfe6f1;padding:19px 0}.faq-list summary{cursor:pointer;font-weight:600;min-height:28px;padding-right:23px}.faq-list details p{margin:13px 0 0}.cta{background:var(--gradient);border-radius:28px;color:#fff;padding:55px clamp(28px,6vw,85px);display:flex;align-items:center;justify-content:space-between;gap:32px}.cta h2,.cta p{color:#fff}.cta p{opacity:.88;margin:0}.cta .download-btn{flex-shrink:0;background:#2980FE}.cta .download-btn:hover{background:#1768E8}.site-footer{background:#f7f9fd;border-top:1px solid var(--border)}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:38px;padding:64px 0 35px}.footer-brand{font-size:22px;font-weight:700;color:var(--ink)}.footer-grid h2{font-size:15px;letter-spacing:0}.footer-grid a:not(.footer-brand){display:block;font-size:13px;color:#5c6a83;margin:11px 0}.footer-grid p{max-width:330px;font-size:14px;margin-top:14px}.fine{font-size:12px!important}.footer-bottom{display:flex;justify-content:space-between;gap:18px;border-top:1px solid #e2e8f3;padding:18px 0 25px;font-size:12px;color:#77859a}.page-hero{background:linear-gradient(120deg,#f1f5ff,#faf8ff);padding:70px 0 60px}.page-hero .container{max-width:1100px}.page-hero h1{max-width:880px}.page-hero p{max-width:760px;font-size:18px;margin-bottom:0}.reading-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(190px,280px);gap:75px;justify-content:space-between;align-items:start}.article-body h2{font-size:27px;margin:0 0 20px}.article-body section{margin-bottom:54px}.article-body p{margin-bottom:18px}.article-body h3{margin:28px 0 12px}.article-body li{margin:9px 0;color:#53617a}.article-body ol,.article-body ul{padding-left:22px}.aside{position:sticky;top:30px;background:#f5f8fd;border:1px solid #e6ebf4;border-radius:18px;padding:25px}.aside h2{font-size:17px}.aside a{display:block;border-top:1px solid #e1e8f5;padding:12px 0;font-size:14px}.article-illustration{background:#f1f5ff;border-radius:22px;margin:25px 0 34px;padding:16px;max-width:650px}.article-illustration img{margin:auto;max-height:320px;object-fit:contain}.note{border-left:3px solid #6174f4;background:#f6f8ff;padding:16px 20px;border-radius:0 12px 12px 0;color:#495b7c}.article-download{border-top:1px solid var(--border);padding-top:28px;margin:38px 0}.article-download p{font-size:14px}.article-nav{display:flex;flex-wrap:wrap;gap:16px;border-top:1px solid var(--border);padding-top:25px}.steps{counter-reset:step;padding-left:0!important;list-style:none}.steps li{position:relative;padding:16px 16px 16px 55px;border-bottom:1px solid var(--border)}.steps li:before{counter-increment:step;content:counter(step);position:absolute;left:3px;top:16px;width:31px;height:31px;display:grid;place-items:center;border-radius:50%;background:#e7eeff;color:#3558f2;font-weight:700}.faq-category{margin-bottom:44px}.faq-category h2{margin-bottom:12px}
@media(max-width:980px){.desktop-nav{gap:12px}.desktop-nav a{font-size:12px}.hero-inner{min-height:480px}.feature-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.scene-grid{grid-template-columns:repeat(2,1fr)}.scene:first-child{grid-column:span 2}.footer-grid{grid-template-columns:repeat(2,1fr)}.reading-layout{gap:30px}}
@media(max-width:760px){.container{width:min(100% - 32px,1200px)}.nav-wrap{min-height:70px}.desktop-nav{display:none}.mobile-nav{display:block;position:relative}.mobile-nav summary{list-style:none;cursor:pointer;min-width:74px;min-height:44px;display:flex;align-items:center;justify-content:center;gap:8px;font-weight:600}.mobile-nav summary::-webkit-details-marker{display:none}.mobile-nav nav{position:absolute;right:0;top:52px;width:min(290px,calc(100vw - 32px));padding:10px;background:#fff;border:1px solid var(--border);box-shadow:0 14px 32px rgba(32,47,79,.12);border-radius:14px;z-index:20}.mobile-nav nav a{display:block;color:#2c3a56;padding:10px 12px;min-height:44px}.hero-inner,.split,.device-row,.reading-layout{grid-template-columns:1fr}.hero-inner{padding:55px 0 40px;gap:10px}.hero-art img{max-height:350px}.hero p{font-size:16px}.benefit-grid{grid-template-columns:repeat(2,1fr);gap:18px}.benefit-grid div{font-size:14px}.feature-grid,.scene-grid{grid-template-columns:1fr}.scene:first-child{grid-column:auto}.split.reverse .visual{order:0}.section-intro{margin-bottom:28px}.cta{flex-direction:column;align-items:flex-start}.page-hero{padding:55px 0 47px}.page-hero p{font-size:16px}.aside{position:static}.footer-grid{gap:22px}.footer-bottom{flex-direction:column}.section{padding:55px 0}}
@media(max-width:410px){.brand{font-size:20px}.brand img{width:36px;height:36px}.benefit-grid{gap:14px}.feature-item{padding:22px 19px}.visual-frame{min-height:200px;padding:12px}.cta{border-radius:19px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.download-btn{transition:none}.download-btn:hover{transform:none}}