:root{
    --primary: rgb(213, 5, 5);
    --header-red: rgb(180, 4, 4);
    --primary-dark: rgb(162, 3, 3);
    --text: #181818;
    --muted: #5f6368;
    --light: #f6f6f6;
    --line: #ececec;
    --white: #ffffff;
    --shadow: 0 14px 36px rgba(0,0,0,.08);
    --radius: 18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--text);background:#fff;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1140px,calc(100% - 32px));margin:0 auto}
.narrow{max-width:880px}
.section-gap{padding:56px 0}
.light-section{background:var(--light)}
.site-header{position:relative;z-index:10;background:#fff;border-bottom:1px solid rgba(180,4,4,.16)}
.mobile-header{height:62px;display:grid;grid-template-columns:56px 1fr 84px;align-items:center;background:#fff;border-bottom:3px solid var(--header-red);padding:0 12px}
.menu-toggle{width:42px;height:42px;border:0;background:#fff;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:0 9px;border-radius:12px;cursor:pointer}
.menu-toggle span{height:2px;width:24px;background:#222;border-radius:2px;display:block}
.mobile-logo{justify-self:center}.mobile-logo img{height:34px;width:auto}.top-action{display:inline-flex;align-items:center;justify-content:center;height:38px;padding:0 18px;border-radius:999px;background:var(--primary);color:#fff;font-weight:700;box-shadow:0 8px 18px rgba(213,5,5,.22)}
.mobile-nav{display:none;background:#fff;border-bottom:1px solid var(--line);padding:8px 16px 14px}.mobile-nav.open{display:grid;grid-template-columns:1fr 1fr;gap:8px}.mobile-nav a{padding:10px 12px;border-radius:12px;background:#f8f8f8;color:#333;font-weight:600}.mobile-nav a.active{background:rgba(213,5,5,.1);color:var(--primary)}
.desktop-topbar,.desktop-header{display:none}
.main-btn{display:inline-flex;align-items:center;justify-content:center;height:46px;padding:0 26px;border-radius:999px;background:var(--primary);color:#fff;font-weight:800;box-shadow:0 12px 24px rgba(213,5,5,.22);transition:.2s}
.main-btn:hover,.top-action:hover{background:var(--primary-dark);transform:translateY(-1px)}
.text-link{color:var(--primary);font-weight:800;display:inline-flex;align-items:center;gap:6px}.text-link:after{content:"›";font-size:20px;line-height:1}
.eyebrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:800;font-size:14px;letter-spacing:.02em;margin-bottom:8px}.eyebrow:before{content:"";width:24px;height:3px;background:var(--primary);border-radius:3px}
.section-head{text-align:center;max-width:780px;margin:0 auto 28px}.section-head.left{text-align:left;margin-left:0}.section-head.compact{margin-bottom:22px}.section-head h2,.showcase-copy h2,.data-copy h2,.app-copy h2,.responsible-box h2,.cta-box h2{font-size:28px;line-height:1.28;margin:0 0 12px}.section-head p{color:var(--muted);margin:0}
.official-hero{background:linear-gradient(180deg,#fff 0%,#f8f8f8 100%);padding:36px 0 42px}.hero-grid{display:grid;gap:28px}.hero-copy h1{font-size:34px;line-height:1.18;margin:8px 0 14px}.hero-copy p{color:#3d3d3d;margin:0 0 20px}.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}.hero-tags span{padding:7px 12px;background:#fff;border:1px solid rgba(213,5,5,.18);border-radius:999px;color:var(--primary);font-weight:700;font-size:13px}.hero-media{position:relative;background:#fff;border-radius:22px;padding:12px;box-shadow:var(--shadow);border:1px solid var(--line)}.hero-media img{border-radius:16px;width:100%;min-height:220px;object-fit:cover}.hero-note{margin-top:10px;padding:10px 12px;background:#fff5f5;border-left:4px solid var(--primary);border-radius:12px;color:#555;font-size:14px}
.category-main-grid,.category-sub-grid,.focus-grid,.service-card-grid,.faq-grid,.content-grid{display:grid;gap:16px}.category-main-card,.category-sub-card,.focus-card,.content-card,.faq-item,.service-card-grid article{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 10px 28px rgba(0,0,0,.04)}.category-main-card{min-height:220px;border-top:4px solid var(--primary)}.category-main-card h3,.category-sub-card h3,.focus-card h3,.service-card-grid h3,.content-card h2,.faq-item h2,.faq-item h3{margin:0 0 10px;font-size:20px;line-height:1.35}.category-main-card p,.category-sub-card p,.focus-card p,.service-card-grid p,.content-card p,.faq-item p{color:#555;margin:0 0 16px}.category-sub-grid{margin-top:16px}.category-sub-card{background:#fafafa;box-shadow:none}.focus-card span{display:inline-flex;background:rgba(213,5,5,.1);color:var(--primary);font-weight:800;border-radius:999px;padding:5px 10px;margin-bottom:10px;font-size:13px}
.info-split .split-grid,.showcase-grid,.data-grid,.app-grid,.download-grid,.page-hero-grid{display:grid;gap:24px;align-items:center}.info-panel{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow)}.image-panel img{border-radius:16px;margin-bottom:16px;max-height:280px;width:100%;object-fit:cover}.info-list{display:grid;gap:12px}.info-list article{padding:14px;border-radius:14px;background:#fafafa;border:1px solid var(--line)}.info-list h3{margin:0 0 6px}.info-list p{margin:0;color:#555}
.showcase-image img,.app-image img,.download-grid img,.page-hero-grid img{border-radius:22px;box-shadow:var(--shadow);border:1px solid var(--line);width:100%;object-fit:cover}.showcase-copy p,.data-copy p,.app-copy p{color:#4a4a4a;margin:0 0 18px}.check-list{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:10px}.check-list li{position:relative;padding-left:26px;color:#474747}.check-list li:before{content:"";position:absolute;left:0;top:.62em;width:10px;height:10px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px rgba(213,5,5,.12)}
.data-cards{display:grid;gap:12px}.data-cards img{border-radius:18px;margin-bottom:4px;max-height:230px;width:100%;object-fit:cover}.data-cards article{background:#fff;border:1px solid var(--line);border-left:4px solid var(--primary);border-radius:16px;padding:15px}.data-cards strong{font-size:18px}.data-cards p{margin:6px 0 0;color:#555}
.app-showcase .app-grid{background:#fff;border-radius:24px;padding:22px;border:1px solid var(--line);box-shadow:var(--shadow)}
.responsible-box{background:#fff;border-left:6px solid var(--primary);border-radius:22px;padding:24px;box-shadow:var(--shadow)}.responsible-box p,.cta-box p{color:#555;margin:0}.bottom-cta{text-align:center}.cta-box{background:#fff;border:1px solid var(--line);border-radius:24px;padding:30px;box-shadow:var(--shadow)}.cta-box .main-btn{margin-top:20px}.center-link{text-align:center;margin-top:22px}
.page-hero{padding:42px 0;background:linear-gradient(180deg,#fff,#f7f7f7);border-bottom:1px solid var(--line)}.page-hero h1{font-size:34px;line-height:1.22;margin:8px 0 14px}.page-hero p{font-size:17px;color:#4d4d4d;margin:0}.page-hero-grid img{max-height:300px}.content-section{padding:46px 0}.content-card.large-card{grid-column:1/-1}.content-card.notice-card{background:#fff7f7;border-left:5px solid var(--primary)}.points-card{background:#fbfbfb}.related-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.related-links a{padding:10px 15px;border:1px solid rgba(213,5,5,.22);border-radius:999px;color:var(--primary);font-weight:800;background:#fff}.steps-list{margin:0;padding-left:20px;color:#4d4d4d}.steps-list li{margin:8px 0}.download-hero .main-btn{margin-top:20px}.faq-list{display:grid;gap:14px}.faq-list .faq-item h2{font-size:19px}
.site-footer{background:#202020;color:#f3f3f3;padding-top:38px}.footer-grid{display:grid;gap:24px}.footer-logo img{height:40px}.site-footer p{color:#d1d1d1;margin:12px 0 0}.site-footer h3{margin:0 0 12px}.footer-links{display:grid;grid-template-columns:1fr 1fr;gap:8px}.footer-links a{color:#f3f3f3}.footer-links a:hover{color:#fff}.footer-bottom{text-align:center;border-top:1px solid rgba(255,255,255,.12);padding:16px;margin-top:28px;color:#bbb;font-size:14px}
@media (min-width:640px){.category-sub-grid,.focus-grid,.service-card-grid,.faq-grid,.content-grid{grid-template-columns:repeat(2,1fr)}.category-main-grid{grid-template-columns:repeat(2,1fr)}.mobile-nav.open{grid-template-columns:repeat(4,1fr)}}
@media (min-width:920px){.mobile-header,.mobile-nav{display:none}.desktop-topbar,.desktop-header{display:block}.desktop-topbar{background:var(--header-red);color:#fff;font-size:13px}.topbar-inner{height:34px;display:flex;align-items:center;justify-content:space-between}.desktop-header{background:#fff;border-bottom:1px solid var(--line)}.desktop-inner{height:76px;display:flex;align-items:center;gap:24px}.site-logo img{height:44px;width:auto}.desktop-nav{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}.desktop-nav a{padding:10px 12px;border-radius:999px;font-weight:800;color:#333;white-space:nowrap}.desktop-nav a.active,.desktop-nav a:hover{background:rgba(213,5,5,.1);color:var(--primary)}.search-icon{width:34px;height:34px;border:2px solid #333;border-radius:50%;position:relative;display:inline-block;flex:0 0 auto}.search-icon:after{content:"";width:10px;height:2px;background:#333;position:absolute;right:-6px;bottom:2px;transform:rotate(45deg);border-radius:2px}.desktop-action{height:42px}.official-hero{padding:62px 0}.hero-grid{grid-template-columns:1.05fr .95fr;gap:42px}.hero-copy h1{font-size:52px}.category-main-grid{grid-template-columns:repeat(4,1fr)}.category-sub-grid{grid-template-columns:repeat(4,1fr)}.focus-grid{grid-template-columns:repeat(4,1fr)}.info-split .split-grid,.showcase-grid,.data-grid,.app-grid,.download-grid,.page-hero-grid{grid-template-columns:1fr 1fr}.service-card-grid{grid-template-columns:repeat(3,1fr)}.faq-grid{grid-template-columns:repeat(4,1fr)}.content-grid{grid-template-columns:repeat(3,1fr)}.content-card.large-card{grid-column:span 2}.content-card.notice-card{grid-column:span 2}.section-gap{padding:74px 0}.section-head h2,.showcase-copy h2,.data-copy h2,.app-copy h2,.responsible-box h2,.cta-box h2{font-size:36px}.page-hero h1{font-size:46px}.footer-grid{grid-template-columns:1.3fr .9fr 1fr}.footer-links{grid-template-columns:1fr}.showcase-grid:nth-child(even){direction:rtl}.showcase-grid:nth-child(even)>*{direction:ltr}}
@media (min-width:1180px){.desktop-nav a{padding:10px 15px}.container{width:min(1180px,calc(100% - 48px))}}