:root{--blue:#4371ff;--ink:#333;--muted:#666;--line:#e9edf7;--pale:#f7f9ff}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;font-size:14px;line-height:1.65}
img{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
a:hover{color:var(--blue)}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.standard-main,.site-header-inner,.footer-inner{width:min(1080px,84%);margin-inline:auto}
.site-header{background:#fff;min-height:70px;border-bottom:1px solid #f4f6fb}
.site-header-inner{display:flex;align-items:center;justify-content:space-between;min-height:70px}
.site-brand{display:inline-flex;align-items:center;gap:7px;color:var(--blue);font-size:18px;font-weight:700;white-space:nowrap}
.site-brand img{width:28px;height:28px;object-fit:contain}
.site-nav{display:flex;align-items:center;gap:32px;height:70px}
.site-nav a{display:inline-flex;align-items:center;height:100%;padding-top:3px;border-bottom:4px solid transparent;color:#666;font-size:12px;white-space:nowrap}
.site-nav a:hover,.site-nav a[aria-current="page"]{color:var(--blue);border-bottom-color:var(--blue)}
.menu-button{display:none;border:0;background:none;padding:8px;cursor:pointer}
.site-footer{margin-top:60px;background:#f8f8f8;color:#777;font-size:11px}
.footer-inner{padding:40px 0 20px}
.footer-links{display:grid;grid-template-columns:1fr 1fr 1.65fr auto;gap:28px;align-items:start}
.footer-links h2{margin:0 0 8px;font-size:13px;font-weight:500;color:#666}
.footer-links p{margin:3px 0}
.footer-links a{display:block;margin:3px 0}
.footer-qr{display:flex;flex-direction:column;align-items:center;gap:6px}
.footer-qr img{width:90px;height:90px;object-fit:contain}
.reporting{padding-top:25px;margin:0;color:#777}
.footer-records{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;border-top:1px solid #ececec;margin-top:12px;padding-top:14px}
.footer-records a{text-decoration:underline;text-decoration-color:#bbb;text-underline-offset:2px}
.about-intro{padding-top:50px;text-align:center}
.about-intro h1{font-size:22px;font-weight:500;margin:0 0 25px}
.about-intro p{text-align:left;font-size:13px;line-height:1.9;margin:0 auto;max-width:930px}
.about-values{padding:70px 0 50px;text-align:center}
.about-values h2{font-size:22px;font-weight:500;margin:0 0 40px}
.value-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:32px 18px}
.value-item img{width:68px;height:68px;object-fit:contain}
.value-item h3{font-size:12px;font-weight:500;margin:8px 0 2px}
.value-item p{font-size:11px;color:#777;line-height:1.4;margin:0}
.contact-section{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center;padding:50px 0}
.contact-section h2{font-size:22px;font-weight:500;margin:0 0 10px}
.contact-section p{color:#666}
.contact-section dl{display:grid;grid-template-columns:85px 1fr;gap:9px 12px;font-size:12px}
.contact-section dt{color:#777}
.contact-section dd{margin:0}
.contact-section img{width:100%;border-radius:8px}
.help-tabs,.security-tabs{display:flex;align-items:center;gap:52px;min-height:98px;overflow:auto;white-space:nowrap}
.help-tabs a,.security-tabs a{display:inline-flex;align-items:center;height:42px;border-bottom:3px solid transparent;color:#666;font-size:13px}
.help-tabs a:hover,.help-tabs a[aria-current="page"],.security-tabs a:hover,.security-tabs a[aria-current="page"]{border-bottom-color:var(--blue);color:var(--blue)}
.faq-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:18px 0 0}
.faq-card{min-height:260px;background:#f8f8f8;padding:14px 16px}
.faq-card h2{font-size:17px;font-weight:400;line-height:1.3;margin:0 0 8px}
.faq-card p{font-size:12px;line-height:1.65;margin:0}
.help-note{font-size:13px;color:#777;margin:30px 0}
.help-note a{color:var(--blue)}
.guide-layout{display:grid;grid-template-columns:150px 1fr;gap:8px;padding:18px 0 0}
.guide-sidebar{display:flex;flex-direction:column;background:#f8f8f8;padding:0 0 8px;align-self:start}
.guide-sidebar strong,.guide-sidebar a{display:block;font-size:13px;padding:9px 14px;color:#666}
.guide-sidebar strong{background:#e6ecff;color:var(--blue);font-weight:500}
.guide-sidebar a:hover{background:#eef2ff;color:var(--blue)}
.guide-content{background:#fafafa;padding:18px 22px 30px;min-height:330px}
.guide-content>h1{color:var(--blue);font-size:13px;font-weight:500;margin:0 0 12px}
.guide-index{list-style-position:inside;padding:0;margin:0}
.guide-index li{list-style:none;font-size:12px;line-height:2.2}
.guide-index a:hover{text-decoration:underline}
.guide-details{margin-top:48px;border-top:1px solid #ececec}
.guide-detail{padding:30px 0;border-bottom:1px solid #ececec;scroll-margin-top:28px}
.guide-detail h2{font-size:19px;font-weight:500;margin:0 0 12px}
.guide-detail p{font-size:13px;line-height:1.8;color:#555}
.security-page{padding-bottom:10px}
.security-page>section>h1{font-size:22px;font-weight:500;margin:8px 0 15px}
.security-summary{background:#f8f8f8;padding:12px 15px;margin-bottom:45px}
.security-summary strong{font-size:14px;font-weight:500}
.security-summary p{font-size:12px;margin:3px 0 0}
.security-page h2{font-size:21px;font-weight:500;margin:0 0 20px}
.security-pillars{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.security-pillars article{border-top:1px solid #e4e4e4;padding-top:12px}
.security-pillars h3{font-size:14px;font-weight:500;text-align:center;margin:0 0 15px}
.security-pillars p{font-size:12px;color:#555;line-height:1.8}
.security-pillars img{width:100%;margin-top:8px}
.security-lower{padding-top:56px;scroll-margin-top:20px}
.security-lower p{max-width:820px;color:#555}
.security-lower a{color:var(--blue)}
.policy-page-title{text-align:center;font-size:23px;font-weight:700;margin:10px 0 14px}
.policy-intro{color:#667;line-height:1.7;font-size:12px;margin:0 0 20px}
.policy-copy{padding:0 50px 30px;font-size:12px;line-height:1.55;overflow-wrap:anywhere;word-break:break-word}
.policy-copy>h1{font-size:17px;margin:0 0 8px}
.policy-copy>h2{font-size:17px;margin:0 0 8px}
.policy-copy p{margin:10px 0}
.policy-copy a,.rule-copy a{color:var(--blue);text-decoration:underline}
.rule-page{padding-top:35px}
.rule-breadcrumb{display:flex;gap:10px;color:#888;font-size:12px;padding-bottom:18px}
.rule-copy{background:#fff;font-size:14px;line-height:1.8;padding:12px 0 25px}
.rule-copy h1{font-size:25px;text-align:center;margin:0 0 24px}
.rule-copy h2{font-size:18px;margin:22px 0 10px}
.rule-copy ol,.rule-copy ul{padding-left:24px}
.rule-copy li{margin-bottom:8px}
.news-hero{background:linear-gradient(110deg,#eaf0ff,#f9fbff);padding:56px 0 60px}
.news-hero span{color:var(--blue);font-size:12px;letter-spacing:3px}
.news-hero h1{font-size:30px;margin:8px 0}
.news-hero p{color:#666;margin:0}
.news-page{display:grid;grid-template-columns:220px 1fr;gap:36px;margin-top:45px}
.news-page aside{display:flex;flex-direction:column;background:#f6f8ff;padding:22px;align-self:start}
.news-page aside strong{font-size:13px;margin-bottom:10px}
.news-page aside a{color:var(--blue)}
.news-page section{border:1px solid #ecf0f9;border-radius:8px;padding:35px;min-height:230px}
.news-page section h2{font-size:23px;font-weight:500;margin:0 0 15px}
.news-page section p{color:#666}
.news-page section a{color:var(--blue)}
@media(max-width:900px){.standard-main,.site-header-inner,.footer-inner{width:90%}.site-nav{gap:18px}.footer-links{grid-template-columns:repeat(3,1fr)}.footer-qr{display:none}.faq-grid{grid-template-columns:repeat(2,1fr)}.security-pillars{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.site-header-inner{min-height:60px}.site-header{min-height:60px}.menu-button{display:block}.site-nav{display:none;position:absolute;z-index:10;top:60px;left:0;right:0;height:auto;padding:12px 5%;background:white;box-shadow:0 8px 18px #dce5fb}.site-nav.is-open{display:flex;flex-direction:column;align-items:stretch;gap:0}.site-nav a{height:42px;border-bottom-width:2px}.about-intro{padding-top:35px}.about-intro h1{font-size:20px}.about-values{padding-top:45px}.about-values h2{font-size:20px}.value-grid{grid-template-columns:repeat(2,1fr);gap:26px 16px}.contact-section{grid-template-columns:1fr}.help-tabs,.security-tabs{gap:24px;min-height:74px}.faq-grid{grid-template-columns:1fr;gap:12px}.faq-card{min-height:auto}.guide-layout{grid-template-columns:1fr}.guide-sidebar{display:none}.guide-content{padding:18px}.guide-detail{grid-template-columns:1fr}.security-pillars{grid-template-columns:1fr 1fr;gap:12px}.security-page>section>h1{font-size:19px}.policy-copy{padding:0 0 25px}.policy-page-title{font-size:21px}.footer-links{grid-template-columns:repeat(2,1fr)}.footer-records{display:block}.footer-records>*{display:block;margin:4px 0}.news-page{grid-template-columns:1fr;gap:16px;margin-top:20px}.news-page section{padding:22px}.news-hero{padding:36px 0}}

/* Match the shared secondary-page header to the home-page navigation. */
@media (min-width: 769px) {
  .site-header { min-height: 10vh; border-bottom: 0; }
  .site-header-inner { width: 100%; min-height: 10vh; margin: 0; }
  .site-brand { padding-left: 4.266667rem; gap: .213333rem; font-size: .64rem; font-weight: 600; line-height: .746667rem; letter-spacing: .053333rem; }
  .site-brand img { width: 1.173333rem; height: 1.173333rem; }
  .site-nav { width: 20.746667rem; height: 10vh; gap: 0; margin: 0; }
  .site-nav a { display: block; flex: none; height: 1.2rem; margin: .853333rem 1.28rem 0 0; padding: 0; border-bottom: 4px solid transparent; font-size: .48rem; font-weight: 500; line-height: .56rem; text-align: right; }
}
@media (max-width: 768px) {
  .site-header { position: relative; z-index: 1000; min-height: 1.066667rem; border: 0; }
  .site-header-inner { width: 100%; min-height: 1.066667rem; margin: 0; padding: 0 .426667rem; }
  .site-brand { gap: .106667rem; font-size: .32rem; font-weight: 500; line-height: .373333rem; letter-spacing: .026667rem; }
  .site-brand img { width: .533333rem; height: .533333rem; }
  .menu-button { display: flex; align-items: center; justify-content: center; width: .64rem; height: 1.066667rem; padding: 0; }
  .menu-button img { width: .64rem; height: .64rem; }
  .site-nav { display: none; position: absolute; top: 1.066667rem; left: 0; right: 0; width: 100%; height: auto; margin: 0; padding: 0; flex-direction: column; align-items: stretch; gap: 0; background: #fff; box-shadow: none; }
  .site-nav.is-open { display: flex; }
  .site-nav a { display: flex; align-items: center; justify-content: center; height: 1.333333rem; margin: 0; padding: 0; border: 0; color: #666; font-size: .426667rem; font-weight: 500; line-height: .506667rem; text-align: center; }
  .site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--blue); border: 0; }
  body.site-nav-open::before { content: ""; position: fixed; inset: 1.066667rem 0 0; z-index: 999; background: rgba(102, 102, 102, .5); }
}