*{box-sizing:border-box}html{scroll-behavior:smooth;overflow-x:hidden}body{margin:0;background:#EEF0F8;color:#2C2A48;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto;object-fit:contain;object-position:center}button{font:inherit}button,a{-webkit-tap-highlight-color:transparent}.address-bar{position:fixed;z-index:120;top:0;left:0;right:0;height:22px;background:#1C1A3A;color:#F7F8FD;font-size:12px}.top-inner,.header-inner,.tabs-inner{max-width:1000px;margin:auto;padding:0 16px}.top-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.plain-action,.drawer-button,.close-button{border:0;background:transparent;color:inherit;cursor:pointer;min-height:44px;padding:0 12px}.plain-action{min-height:22px}.window-header{position:fixed;z-index:119;top:22px;left:0;right:0;height:54px;background:#EBEEF8;border-bottom:1px solid rgba(91,75,219,.42)}.header-inner{height:54px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px}.header-left{justify-self:start}.brand-home{display:inline-flex;align-items:center;min-height:44px}.brand-logo{height:24px;width:auto;max-width:170px}.brand-fallback{font-size:16px;font-weight:800;color:#1A1840}.app-entry{min-height:44px;display:inline-flex;align-items:center;justify-content:center;padding:0 18px;border-radius:12px;background:linear-gradient(135deg,#8AA4E0 0%,#5B4BDB 55%,#3A6BD4 100%);color:#F7F8FD;font-size:14px;font-weight:700}.drawer-button{justify-self:end;color:#1A1840;border:1px solid rgba(58,107,212,.18);border-radius:12px;background:#F7F8FD;min-height:44px}.section-tabs{position:fixed;z-index:118;top:76px;left:0;right:0;min-height:42px;background:#F7F8FD;border-bottom:1px solid rgba(58,107,212,.18)}.tabs-inner{min-height:42px;display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:6px;padding-top:4px;padding-bottom:4px}.section-tabs a{font-size:13px;line-height:32px;padding:0 15px;border-radius:999px;color:#1C1A3A;border:1px solid rgba(58,107,212,.18);background:#EEF0F8}.section-tabs a.active{background:#5B4BDB;color:#F7F8FD;border-color:#5B4BDB}.site-main{max-width:1000px;margin:0 auto;padding:152px 16px 70px;min-height:70vh}.site-main h1{font-size:24px;line-height:1.3;color:#1A1840;margin:0 0 14px}.site-main h2{font-size:20px;line-height:1.35;color:#1A1840;margin:0 0 12px}.site-main h3{font-size:16px;line-height:1.4;color:#1A1840;margin:0 0 8px}.site-main p{margin:0 0 14px}.eyebrow{font-size:12px;letter-spacing:.12em;color:#5B4BDB;font-weight:800;text-transform:uppercase;margin-bottom:8px}.lead{font-size:16px;color:#5A5680;max-width:760px}.section{margin:28px 0}.panel{background:#F7F8FD;border:1px solid rgba(58,107,212,.18);border-radius:14px;box-shadow:0 12px 28px rgba(28,26,58,.08)}.media-slot{display:flex;align-items:center;justify-content:center;background:#EBEEF8;border:1px solid rgba(58,107,212,.18);border-radius:12px;overflow:hidden}.media-slot img{width:100%;height:100%;object-fit:contain}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.btn{min-height:42px;padding:0 18px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}.btn-primary{background:linear-gradient(135deg,#8AA4E0 0%,#5B4BDB 55%,#3A6BD4 100%);color:#F7F8FD}.btn-secondary{background:#F7F8FD;border:1px solid rgba(91,75,219,.42);color:#1C1A3A}.btn:hover,.app-entry:hover{filter:brightness(.98);transform:translateY(-1px)}a:focus-visible,button:focus-visible{outline:3px solid rgba(58,107,212,.35);outline-offset:2px}.hero-window{padding:20px}.hero-window .media-slot{height:168px;margin-bottom:20px}.long-copy{padding:24px}.long-copy .media-slot{height:176px;margin-bottom:18px}.step-stack{display:grid;gap:12px;max-width:760px}.step-card{padding:20px;background:#F7F8FD;border:1px solid rgba(58,107,212,.18);border-radius:12px;box-shadow:0 12px 28px rgba(28,26,58,.08)}.step-card:nth-child(2){transform:translateX(24px)}.step-card .media-slot{height:170px;margin-bottom:14px}.tag-wrap{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}.tag{padding:8px 13px;border-radius:999px;background:#E0E4F2;color:#1C1A3A;border:1px solid rgba(58,107,212,.18);font-weight:700}.bookmark-block{padding:22px}.bookmark-block .media-slot{height:184px;margin-top:16px}.compare{display:grid;grid-template-columns:1fr 1fr;gap:18px}.compare>article{padding:22px}.compare .media-slot{height:190px;margin-bottom:14px}.route-block{display:grid;grid-template-columns:1.1fr .9fr;gap:20px;padding:22px;align-items:center}.route-block .media-slot{height:190px}.route-steps{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.route-steps span{background:#E0E4F2;border-radius:10px;padding:8px 12px;font-weight:700}.center-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:760px;margin:auto}.center-cards article{padding:22px;text-align:center}.center-cards .media-slot{height:170px;margin-bottom:14px}.product-card{max-width:760px;margin:auto;padding:24px;text-align:center}.product-visual{height:300px;display:flex;align-items:center;justify-content:center;background:#EBEEF8;border-radius:14px;border:1px solid rgba(58,107,212,.18);margin:16px 0}.product-visual img{width:100%;height:100%;object-fit:contain}.product-icon{width:48px;height:48px;object-fit:contain;margin:0 auto 10px}.points{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.points article{padding:18px}.faq-mini{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-mini article{padding:18px}.brand-block{padding:24px}.brand-block .media-slot{height:210px;margin-bottom:16px}.inner-hero{padding:24px;margin-bottom:20px;background:#F7F8FD;border:1px solid rgba(58,107,212,.18);border-radius:14px}.inner-hero .media-slot{height:230px;margin-bottom:18px}.window-diagram{padding:18px;background:#E0E4F2;border-radius:14px}.window-diagram .bar{height:14px;background:#1C1A3A;border-radius:8px 8px 4px 4px;margin-bottom:8px}.window-diagram .body{background:#F7F8FD;border:1px solid rgba(58,107,212,.18);border-radius:10px;padding:18px}.content-columns{display:grid;grid-template-columns:.8fr 1.2fr;gap:20px}.side-note{padding:20px;background:#E0E4F2;border-radius:12px;align-self:start}.text-card{padding:22px}.stair-layout{display:grid;gap:14px}.stair-layout article{padding:22px;max-width:820px}.stair-layout article:nth-child(2){margin-left:40px}.stair-layout article:nth-child(3){margin-left:80px}.stair-layout .media-slot{height:210px;margin-bottom:14px}.label-layout{padding:22px}.label-layout .media-slot{height:220px;margin-bottom:16px}.label-sections{display:grid;grid-template-columns:1fr 1fr;gap:14px}.label-sections article{padding:18px;background:#EBEEF8;border-radius:12px}.reading-flow{display:grid;grid-template-columns:1fr 1fr;gap:18px}.reading-flow article{padding:22px}.reading-preview{min-height:280px;padding:28px;background:#F7F8FD;border:1px solid rgba(58,107,212,.18);border-radius:14px}.tool-list{display:grid;gap:12px}.tool-item{display:grid;grid-template-columns:120px 1fr;gap:20px;padding:20px}.tool-index{font-weight:800;color:#5B4BDB}.split-demo{display:grid;grid-template-columns:1fr 1fr;gap:2px;background:#5B4BDB;padding:2px;border-radius:14px;overflow:hidden}.split-demo>div{background:#F7F8FD;padding:22px;min-height:230px}.path-list{position:relative;padding-left:28px}.path-list:before{content:"";position:absolute;left:8px;top:12px;bottom:12px;width:2px;background:#8AA4E0}.path-item{position:relative;padding:18px 20px;margin-bottom:12px}.path-item:before{content:"";position:absolute;left:-25px;top:28px;width:12px;height:12px;border-radius:50%;background:#5B4BDB;border:3px solid #EEF0F8}.memo-list{display:grid;gap:12px}.memo-row{padding:20px;border-left:4px solid #5B4BDB}.extension-center{max-width:780px;margin:auto;text-align:center}.extension-center .media-slot{height:240px;margin-bottom:18px}.extension-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;text-align:left}.extension-grid article{padding:20px}.terms{display:grid;gap:14px}.terms article{padding:22px}.terms article:nth-child(even){background:#EBEEF8}.install-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.install-flow article{padding:18px}.help-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.help-grid article{padding:20px}.faq-full{display:grid;gap:12px}.faq-full details{background:#F7F8FD;border:1px solid rgba(58,107,212,.18);border-radius:12px;padding:0 18px}.faq-full summary{cursor:pointer;font-weight:800;color:#1A1840;padding:16px 0}.faq-full p{padding:0 0 16px;margin:0}.contact-options{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.contact-options article{padding:20px}.about-statement{padding:28px;background:#1C1A3A;color:#F7F8FD;border-radius:14px}.about-statement h1,.about-statement h2{color:#F7F8FD}.about-statement .media-slot{height:220px;background:#EBEEF8;margin-bottom:18px}.site-footer{background:#1C1A3A;color:#EEF0F8;border-top:1px solid #8AA4E0;font-size:13px}.footer-inner{max-width:1000px;margin:auto;padding:28px 16px 26px}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:20px}.footer-brand .brand-logo{height:24px}.footer-brand .brand-fallback{color:#F7F8FD}.footer-brand strong,.footer-brand span{display:block}.footer-brand span{color:#BFC8E8}.footer-groups{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.footer-groups h2{font-size:13px;margin:0 0 8px;color:#F7F8FD}.footer-groups a{display:block;color:#D9DEF1;padding:4px 0}.footer-note{margin:20px 0 8px;color:#D9DEF1}.copyright{margin:0;color:#BFC8E8}.overlay{position:fixed;inset:0;z-index:140;background:rgba(28,26,58,.45);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.overlay.open{opacity:1;visibility:visible;pointer-events:auto}.tool-drawer{position:fixed;z-index:150;right:18px;bottom:18px;width:360px;max-height:70vh;background:#F7F8FD;color:#2C2A48;border:1px solid rgba(91,75,219,.42);border-radius:14px;box-shadow:0 18px 50px rgba(28,26,58,.22);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(16px);transition:.2s;overflow:hidden}.tool-drawer.open{opacity:1;visibility:visible;pointer-events:auto;transform:none}.drawer-head{height:60px;padding:8px 12px 8px 16px;background:#EBEEF8;border-bottom:1px solid rgba(58,107,212,.18);display:flex;align-items:center;justify-content:space-between}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-brand .brand-logo{height:24px}.drawer-brand .brand-fallback{font-size:14px}.close-button{color:#1C1A3A;border:1px solid rgba(58,107,212,.18);border-radius:10px;background:#F7F8FD}.drawer-scroll{overflow:auto;max-height:calc(70vh - 60px);padding:12px}.drawer-scroll section+section{margin-top:12px}.drawer-scroll h2{font-size:13px;margin:0 0 6px;color:#5A5680}.drawer-scroll a{display:block;padding:10px 12px;border-radius:10px}.drawer-scroll a:hover{background:#EBEEF8}.drawer-scroll strong,.drawer-scroll span{display:block}.drawer-scroll span{font-size:12px;color:#7A76A0}.search-layer{position:fixed;z-index:151;top:76px;left:50%;width:min(720px,calc(100% - 32px));transform:translate(-50%,-10px);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.search-layer.open{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}.search-card{background:#EBEEF8;border:1px solid rgba(91,75,219,.42);border-radius:14px;box-shadow:0 18px 50px rgba(28,26,58,.22);padding:18px}.search-head{display:flex;align-items:center;justify-content:space-between}.search-card p{margin:8px 0 14px}.search-links{display:flex;flex-wrap:wrap;gap:8px}.search-links a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;background:#F7F8FD;border:1px solid rgba(58,107,212,.18);border-radius:999px}.mobile-bar{display:none}
@media(max-width:700px){.section-tabs{display:none}.site-main{padding:108px 16px 86px}.header-inner{grid-template-columns:1fr auto auto;gap:6px}.brand-logo{max-width:120px}.brand-fallback{font-size:14px}.app-entry{padding:0 12px}.drawer-button{padding:0 10px}.hero-window,.long-copy,.inner-hero,.text-card{padding:18px}.compare,.route-block,.center-cards,.points,.faq-mini,.content-columns,.label-sections,.reading-flow,.extension-grid,.install-flow,.help-grid,.contact-options,.footer-groups{grid-template-columns:1fr}.step-card:nth-child(2){transform:none}.stair-layout article:nth-child(2),.stair-layout article:nth-child(3){margin-left:0}.route-block{padding:18px}.tool-item{grid-template-columns:1fr;gap:6px}.split-demo{grid-template-columns:1fr}.site-footer{padding-bottom:54px}.footer-groups{gap:12px}.tool-drawer{right:4%;bottom:62px;width:92%;max-height:72vh}.drawer-scroll{max-height:calc(72vh - 60px)}.search-layer{inset:0;width:auto;transform:none;background:#1C1A3A;color:#F7F8FD;opacity:0}.search-layer.open{transform:none}.search-card{height:100%;border:0;border-radius:0;background:#1C1A3A;color:#F7F8FD;padding:90px 18px 70px}.search-head .close-button{color:#1C1A3A}.search-links a{color:#1C1A3A}.mobile-bar{display:grid;position:fixed;z-index:100;left:0;right:0;bottom:0;height:calc(48px + env(safe-area-inset-bottom));grid-template-columns:repeat(4,1fr);padding-bottom:env(safe-area-inset-bottom);background:#F7F8FD;border-top:1px solid rgba(58,107,212,.18)}.mobile-bar a{display:flex;align-items:center;justify-content:center;font-size:13px;min-height:48px}.mobile-bar a.active{background:#5B4BDB;color:#F7F8FD}.product-visual{height:280px}.faq-full details{padding:0 14px}}

.media-210{height:210px}.media-230{height:230px}.media-180{height:180px}.center-actions{justify-content:center}.lead-centered{margin-left:auto;margin-right:auto}.eyebrow-soft{color:#BFC8E8}