:root{--ink:#101622;--sky:#3d8bfd;--paper:#f4f8fc;--muted:#68758a;--line:#dce6f0;--dark:#14213d}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;color:var(--ink);background:#fff;line-height:1.75}img{max-width:100%;display:block}.header{height:72px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;padding:0 max(22px,6vw);background:#fff;border-bottom:1px solid var(--line)}.brand img{width:118px;height:38px;object-fit:contain}.topline{text-align:center;font-size:13px;color:var(--muted)}.header-cta{justify-self:end;background:var(--sky);color:#fff;text-decoration:none;padding:11px 18px;border-radius:999px;font-size:14px}.hero{padding:40px max(22px,6vw) 30px;display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;background:linear-gradient(180deg,#f7fbff 0,#eef6ff 100%)}.eyebrow{margin:0 0 10px;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:#4e7ee5;font-weight:700}.hero h1{margin:0 0 18px;font-size:54px;line-height:1.08}.lead{margin:0;color:#465266}.hero-links{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 22px;border-radius:12px;text-decoration:none;background:var(--dark);color:#fff}.btn.ghost{background:#fff;color:var(--dark);border:1px solid #bccce7}.hero-image img{width:100%;height:440px;object-fit:cover;border-radius:24px;box-shadow:0 24px 50px rgba(61,139,253,.18)}.strip-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding:18px max(22px,6vw) 0}.strip-gallery figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden}.strip-gallery img{width:100%;height:220px;object-fit:cover}.strip-gallery figcaption{padding:12px 14px;font-size:14px;color:#44536a}.zones,.flow,.dual-story,.reading-grid,.faq{padding:70px max(22px,6vw) 0}.zones-head{max-width:800px}.zones-head h2,.flow h2,.faq h2{margin:8px 0 0;font-size:34px;line-height:1.2}.zones-head p:last-child{color:#56657c}.zone-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:28px}.zone-grid article{background:var(--paper);border-radius:18px;padding:24px;border:1px solid var(--line)}.zone-grid span{display:inline-flex;width:42px;height:42px;align-items:center;justify-content:center;border-radius:999px;background:#dcecff;color:#2f6fe4;font-weight:700}.zone-grid h3{margin:14px 0 10px;font-size:20px}.zone-grid p{margin:0;color:#55647a}.flow ol{list-style:none;padding:0;margin:24px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.flow li{display:grid;grid-template-columns:56px 1fr;gap:16px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.flow b{width:56px;height:56px;border-radius:14px;background:#1b2b49;color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px}.flow h3{margin:0 0 8px;font-size:20px}.flow p{margin:0;color:#55647a}.dual-story{display:grid;grid-template-columns:1fr 1fr;gap:24px}.dual-story article{display:grid;grid-template-columns:1fr;gap:18px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px}.dual-story img{width:100%;height:260px;object-fit:cover;border-radius:18px}.dual-story h2{margin:8px 0 0;font-size:28px;line-height:1.2}.dual-story p:last-child{color:#55647a}.reading-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.reading-grid article{background:var(--dark);color:#fff;border-radius:20px;padding:24px}.reading-grid p{margin:10px 0 0;color:#d6def0}.download-panel{margin:70px max(22px,6vw) 0;background:linear-gradient(135deg,#17315b 0,#2c60b4 100%);border-radius:24px;color:#fff;padding:32px;display:flex;align-items:center;justify-content:space-between;gap:22px}.download-panel .eyebrow.light{color:#d1e1ff}.download-panel h2{margin:8px 0 10px;font-size:32px}.download-panel p:last-child{margin:0;color:#dce7fb}.download-panel a{display:inline-flex;align-items:center;justify-content:center;padding:14px 22px;border-radius:999px;background:#fff;color:#17315b;text-decoration:none;font-weight:700;white-space:nowrap}.faq header{max-width:720px}.faq-list{margin-top:24px;border-top:1px solid var(--line)}.faq details{border-bottom:1px solid var(--line);padding:18px 0}.faq summary{cursor:pointer;font-weight:700;list-style:none}.faq summary::-webkit-details-marker{display:none}.faq p{margin:10px 0 0;color:#55647a}.mobile-bar{display:none}footer{margin-top:70px;padding:28px max(22px,6vw);background:#0d1423;color:#fff;display:flex;justify-content:space-between;gap:20px;align-items:center}footer p{margin:6px 0 0;color:#b9c8de}footer a{color:#fff;text-decoration:none}
@media(max-width:900px){body{padding-bottom:64px}.header{grid-template-columns:1fr 1fr;height:62px}.topline{display:none}.header-cta{display:none}.hero{grid-template-columns:1fr;padding-top:55px}.hero h1{font-size:42px}.hero-image img{height:auto;max-height:360px}.strip-gallery,.zone-grid,.flow ol,.dual-story,.reading-grid{grid-template-columns:1fr}.strip-gallery img{height:auto;max-height:320px}.download-panel,footer{display:block}.download-panel a,footer a{margin-top:16px}.mobile-bar{position:fixed;left:0;right:0;bottom:0;height:62px;padding:0 16px;background:#0d1423;color:#fff;display:flex;align-items:center;justify-content:space-between;z-index:40}.mobile-bar a{background:#3d8bfd;color:#fff;text-decoration:none;padding:10px 16px;border-radius:999px}}
/* Wide-screen containment */
.strip-gallery{width:min(calc(100% - 48px),1180px);margin:18px auto 0;padding:0}
.zone-grid,.dual-story,.reading-grid{max-width:1240px;margin-inline:auto}
.flow ol{max-width:1240px;margin:24px auto 0}
.download-panel{width:min(calc(100% - 48px),1240px);margin:70px auto 0}
@media(min-width:1600px){.header,.hero,.zones,.flow,.faq,footer{padding-inline:max(24px,calc((100vw - 1240px)/2))}}
@media(max-width:900px){.download-panel{width:auto}}