*{box-sizing:border-box}html{scroll-behavior:smooth;background:#EEF0F8}body{margin:0;background:#EEF0F8;color:#2C2A48;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;font-size:15px;line-height:1.7;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.skip-link{position:fixed;left:12px;top:-60px;z-index:120;background:#F7F8FD;color:#1C1A3A;padding:8px 12px;border-radius:8px}.skip-link:focus{top:8px}.address-bar{position:fixed;inset:0 0 auto 0;height:22px;background:#1C1A3A;color:#F7F8FD;z-index:70;display:flex;align-items:center;justify-content:space-between;padding:0 max(16px,calc((100vw - 1000px)/2));font-size:12px}.address-brand{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.text-trigger{border:0;background:transparent;color:#F7F8FD;min-width:44px;height:22px;cursor:pointer}.window-head{position:fixed;left:0;right:0;top:22px;height:54px;background:#EBEEF8;border-bottom:1px solid rgba(58,107,212,.18);z-index:69}.head-inner{max-width:1000px;height:100%;margin:0 auto;padding:0 16px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px}.brand-home{display:inline-flex;align-items:center;min-height:44px;min-width:0}.brand-image img{display:block;height:24px;max-width:150px;object-fit:contain;object-position:center}.brand-image:empty{display:none}.brand-image:not(:empty)+.brand-fallback{display:none}.brand-fallback{font-size:16px;font-weight:800;color:#1A1840}.app-link{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 16px;border-radius:12px;background:linear-gradient(135deg,#8AA4E0 0%,#5B4BDB 55%,#3A6BD4 100%);color:#F7F8FD;font-size:14px;font-weight:700}.drawer-trigger{justify-self:end;border:1px solid rgba(91,75,219,.42);background:#F7F8FD;color:#1C1A3A;border-radius:12px;height:44px;padding:0 14px;cursor:pointer}.section-tabs{position:fixed;top:76px;left:0;right:0;min-height:42px;background:#F7F8FD;border-bottom:1px solid rgba(58,107,212,.18);z-index:68}.section-tabs-inner{min-height:42px;max-width:1000px;margin:0 auto;padding:5px 16px;display:flex;justify-content:center;align-items:center;gap:7px;flex-wrap:wrap}.section-tabs a{display:inline-flex;align-items:center;justify-content:center;min-height:32px;padding:0 14px;border:1px solid rgba(58,107,212,.18);border-radius:999px;font-size:13px;color:#2C2A48;background:#F7F8FD}.section-tabs a.active{background:#5B4BDB;color:#F7F8FD;border-color:#5B4BDB}.site-main{max-width:1000px;margin:0 auto;padding:142px 16px 70px}.hero-window,.content-card,.stair-card,.center-card,.compare-pane,.path-step,.memo-row,.terms-block,.help-block,.brand-block{border:1px solid rgba(58,107,212,.18);background:#F7F8FD;border-radius:14px;box-shadow:0 12px 28px rgba(28,26,58,.08)}h1{font-size:24px;line-height:1.3;margin:0 0 12px;color:#1A1840}h2{font-size:20px;line-height:1.35;margin:0 0 10px;color:#1A1840}h3{font-size:16px;line-height:1.4;margin:0 0 7px;color:#1A1840}p{margin:0 0 14px}.eyebrow{font-size:12px;letter-spacing:.08em;color:#5A5680;font-weight:700}.lead{font-size:16px;color:#5A5680}.action-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.action-center{justify-content:center}.text-left{text-align:left}.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-link:hover,.drawer-trigger:hover,.section-tabs a:hover,.footer-links a:hover,.quick-search a:hover{transform:translateY(-1px)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(91,75,219,.42);outline-offset:2px}.image-slot{display:flex;align-items:center;justify-content:center;background:#EBEEF8;border:1px solid rgba(58,107,212,.18);border-radius:12px;overflow:hidden}.image-slot img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}.slot-banner{height:168px}.slot-wide{height:176px}.slot-mid{height:190px}.slot-app{height:320px;max-width:280px;margin:0 auto}.slot-brand{height:220px}.hero-window{padding:18px}.hero-window .slot-banner{margin-bottom:20px}.section-block{margin-top:28px}.long-read{padding:22px;background:#F7F8FD;border:1px solid rgba(58,107,212,.18);border-radius:14px}.long-read .slot-wide{margin-bottom:18px}.stair-stack{display:grid;gap:12px}.stair-card{padding:18px}.stair-card:nth-child(2){transform:translateX(24px);width:calc(100% - 24px)}.tag-cloud{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0}.tag-cloud a,.tag-cloud span{padding:8px 13px;border-radius:999px;background:#EBEEF8;color:#1C1A3A;border:1px solid rgba(91,75,219,.25)}.split-compare{display:grid;grid-template-columns:1fr 1fr;gap:16px}.compare-pane{padding:18px}.compare-pane .image-slot{margin-bottom:14px}.path-line{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.path-step{padding:18px;text-align:center}.center-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px;max-width:760px;margin:0 auto}.center-card{padding:20px;text-align:center}.product-card{max-width:760px;margin:0 auto;padding:22px;border:1px solid rgba(91,75,219,.42);background:#F7F8FD;border-radius:14px;box-shadow:0 12px 28px rgba(28,26,58,.08);text-align:center}.product-icon img{width:48px;height:48px;object-fit:contain}.product-icon{height:48px;display:flex;justify-content:center;margin-bottom:10px}.text-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.content-card{padding:20px}.faq-short{display:grid;grid-template-columns:1fr 1fr;gap:12px}.faq-short article{background:#EBEEF8;border-radius:12px;padding:16px}.page-intro{padding:22px;background:#E0E4F2;border-radius:14px;border:1px solid rgba(58,107,212,.18);margin-bottom:20px}.page-intro .lead{max-width:760px}.window-demo{background:#1C1A3A;color:#F7F8FD;border-radius:14px;padding:14px;border:1px solid rgba(91,75,219,.42)}.window-demo-top{display:flex;gap:7px;margin-bottom:12px}.window-demo-top i{width:10px;height:10px;border-radius:50%;background:#8AA4E0}.window-demo-body{background:#F7F8FD;color:#2C2A48;border-radius:10px;padding:18px}.stair-layout{display:grid;gap:14px}.stair-layout .stair-card:nth-child(2){margin-left:24px}.stair-layout .stair-card:nth-child(3){margin-left:48px}.reading-layout{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(240px,.8fr);gap:16px}.reading-main,.reading-side{padding:20px;border-radius:14px}.reading-main{background:#F7F8FD;border:1px solid rgba(58,107,212,.18)}.reading-side{background:#E0E4F2}.tool-list{display:grid;gap:12px}.tool-item{display:grid;grid-template-columns:140px 1fr;gap:18px;padding:18px;border-radius:14px;background:#F7F8FD;border:1px solid rgba(58,107,212,.18)}.tool-item strong{color:#5B4BDB}.compare-table{display:grid;grid-template-columns:1fr 1fr;gap:16px}.compare-column{padding:20px;border-radius:14px;border:1px solid rgba(58,107,212,.18);background:#F7F8FD}.compare-column.accent{background:#E0E4F2}.route-wrap{display:grid;gap:12px}.route-row{display:grid;grid-template-columns:120px 1fr;gap:18px;align-items:start;padding:18px;border-radius:14px;background:#F7F8FD;border:1px solid rgba(58,107,212,.18)}.route-key{font-weight:800;color:#5B4BDB}.memo-list{display:grid;gap:12px}.memo-row{padding:18px;display:grid;grid-template-columns:130px 1fr;gap:16px}.center-explain{max-width:760px;margin:0 auto;display:grid;gap:14px}.terms-list{display:grid;gap:14px}.terms-block{padding:20px}.notice{padding:16px 18px;background:#E0E4F2;border-left:4px solid #5B4BDB;border-radius:10px}.help-columns{display:grid;grid-template-columns:1fr 1fr;gap:16px}.help-block{padding:19px}.contact-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.contact-grid article{background:#F7F8FD;border:1px solid rgba(58,107,212,.18);border-radius:14px;padding:20px}.faq-list{display:grid;gap:12px}.faq-list details{background:#F7F8FD;border:1px solid rgba(58,107,212,.18);border-radius:12px;padding:14px 16px}.faq-list summary{cursor:pointer;font-weight:800;color:#1A1840}.faq-list details p{margin-top:10px}.site-footer{background:#1C1A3A;color:#EEF0F8;border-top:1px solid #8AA4E0;font-size:13px}.footer-inner{max-width:1000px;margin:0 auto;padding:30px 16px 80px}.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:20px}.footer-logo img{height:24px;max-width:150px;object-fit:contain}.footer-brand strong{display:block;font-size:16px}.footer-brand span{display:block;color:#C9D4F2}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.footer-links h2{color:#F7F8FD;font-size:14px;margin:0 0 8px}.footer-links a{display:block;color:#DDE5F8;margin:4px 0}.footer-note{margin-top:22px;color:#DDE5F8}.copyright{color:#B9C4E3;margin:8px 0 0}.page-mask{position:fixed;inset:0;background:rgba(28,26,58,.42);z-index:78;opacity:0;pointer-events:none;transition:.18s}.page-mask.show{opacity:1;pointer-events:auto}.tool-drawer{position:fixed;right:18px;bottom:18px;width:360px;max-height:70vh;background:#F7F8FD;border:1px solid rgba(91,75,219,.42);border-radius:14px;box-shadow:0 18px 50px rgba(28,26,58,.25);z-index:80;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(12px);transition:.18s;overflow:hidden}.tool-drawer.open{visibility:visible;pointer-events:auto;opacity:1;transform:none}.drawer-top{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;background:#EBEEF8;border-bottom:1px solid rgba(58,107,212,.18)}.drawer-brand{display:flex;align-items:center;gap:8px}.drawer-brand img{height:24px;max-width:120px;object-fit:contain}.drawer-top button{height:40px;border:1px solid rgba(91,75,219,.42);background:#F7F8FD;border-radius:10px;cursor:pointer}.drawer-scroll{overflow:auto;max-height:calc(70vh - 64px);padding:14px}.drawer-scroll section+section{margin-top:16px}.drawer-scroll h2{font-size:14px;margin:0 0 7px}.drawer-scroll a{display:grid;grid-template-columns:92px 1fr;gap:8px;padding:9px 10px;border-radius:10px}.drawer-scroll a:hover{background:#EBEEF8}.drawer-scroll b{color:#1C1A3A}.drawer-scroll span{font-size:12px;color:#5A5680}.search-layer{position:fixed;top:76px;left:0;right:0;z-index:79;visibility:hidden;pointer-events:none;opacity:0;transform:translateY(-10px);transition:.18s}.search-layer.open{visibility:visible;pointer-events:auto;opacity:1;transform:none}.search-card{max-width:700px;margin:10px auto 0;background:#EBEEF8;border:1px solid rgba(91,75,219,.42);border-radius:14px;padding:18px;box-shadow:0 18px 50px rgba(28,26,58,.18)}.search-heading{display:flex;justify-content:space-between;gap:12px;align-items:start}.search-heading strong{display:block;font-size:18px;color:#1A1840}.search-heading span{display:block;color:#5A5680;font-size:13px}.search-heading button,.search-row button{height:42px;border:0;border-radius:10px;background:#5B4BDB;color:#F7F8FD;padding:0 16px;cursor:pointer}.search-form{margin-top:14px}.search-form label{font-size:13px;color:#5A5680}.search-row{display:grid;grid-template-columns:1fr auto;gap:8px}.search-row input{height:42px;border:1px solid rgba(58,107,212,.24);border-radius:10px;background:#F7F8FD;padding:0 12px;color:#2C2A48;min-width:0}.quick-search{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.quick-search a{padding:7px 10px;background:#F7F8FD;border:1px solid rgba(58,107,212,.18);border-radius:999px;font-size:13px}.search-hint{margin:9px 0 0;font-size:13px;color:#5A5680}.mobile-bottom{display:none}.overlay-open{overflow:hidden}.brand-block{padding:22px}.brand-block .slot-brand{margin:14px 0}.muted{color:#5A5680}.small{font-size:13px;color:#7A76A0}.rule-list{padding-left:1.2em}.rule-list li{margin:6px 0}.inline-links{display:flex;flex-wrap:wrap;gap:10px}.inline-links a{padding:9px 12px;border-radius:10px;background:#EBEEF8;border:1px solid rgba(58,107,212,.18);font-weight:700}.section-title{display:flex;justify-content:space-between;align-items:end;gap:14px;margin-bottom:12px}.section-title p{margin:0;color:#5A5680;font-size:13px}.app-layout{display:grid;grid-template-columns:280px 1fr;gap:22px;align-items:center}.icon-line{display:flex;align-items:center;gap:12px;margin-bottom:12px}.icon-line .product-icon{margin:0;justify-content:flex-start}.chip-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.chip-row span{background:#EBEEF8;border:1px solid rgba(58,107,212,.18);border-radius:999px;padding:6px 10px;font-size:13px}.top-space{margin-top:16px}
@media (max-width:760px){.section-tabs{display:none}.site-main{padding-top:96px;padding-bottom:80px}.head-inner{grid-template-columns:minmax(0,1fr) auto auto;padding:0 10px}.brand-home{min-width:0}.brand-fallback{font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.app-link,.drawer-trigger{padding:0 10px;font-size:13px}.split-compare,.text-grid,.faq-short,.reading-layout,.compare-table,.help-columns,.contact-grid,.center-pair,.app-layout{grid-template-columns:1fr}.path-line{grid-template-columns:1fr}.stair-card:nth-child(2),.stair-layout .stair-card:nth-child(2),.stair-layout .stair-card:nth-child(3){transform:none;margin-left:0;width:100%}.tool-item,.route-row,.memo-row{grid-template-columns:1fr;gap:8px}.footer-links{grid-template-columns:1fr 1fr}.tool-drawer{right:4%;bottom:60px;width:92%;max-height:72vh}.drawer-scroll{max-height:calc(72vh - 64px)}.search-layer{top:0;bottom:0;background:#1C1A3A}.search-card{border:0;border-radius:0;max-width:none;min-height:100%;margin:0;background:#1C1A3A;color:#F7F8FD;padding:96px 16px 80px}.search-heading strong,.search-form label{color:#F7F8FD}.search-heading span,.search-hint{color:#C9D4F2}.search-row input{background:#F7F8FD}.quick-search a{background:#2B2850;color:#F7F8FD;border-color:rgba(138,164,224,.35)}.mobile-bottom{position:fixed;left:0;right:0;bottom:0;z-index:67;height:calc(48px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#F7F8FD;border-top:1px solid rgba(58,107,212,.18);display:grid;grid-template-columns:repeat(4,1fr)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:48px;font-size:13px}.mobile-bottom a.active{background:#5B4BDB;color:#F7F8FD}.footer-inner{padding-bottom:100px}.slot-app{height:300px}.drawer-scroll a{grid-template-columns:78px 1fr}}
@media (max-width:420px){.address-brand{max-width:240px}.footer-links{grid-template-columns:1fr 1fr}.hero-window,.long-read,.content-card,.compare-pane,.center-card,.product-card,.terms-block,.help-block,.brand-block{padding:16px}.slot-banner{height:150px}.slot-wide{height:160px}.slot-mid{height:170px}.slot-app{height:280px}}