:root{color-scheme:dark;font-family:"Microsoft YaHei UI","PingFang SC",system-ui,sans-serif;background:#060b15;color:#ecf5ff}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 80% 5%,rgba(0,108,255,.18),transparent 30%),linear-gradient(180deg,#00133a 0,#07101f 33%,#060b15 100%)}button,a{font:inherit}.install-header{min-height:86px;padding:16px clamp(20px,5vw,72px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(143,194,255,.2);background:rgba(0,19,58,.88);backdrop-filter:blur(14px)}.install-header img{display:block;width:min(310px,58vw);height:auto}.install-header a{color:#c9e4ff;text-decoration:none;padding:12px 16px;border:1px solid rgba(143,194,255,.34);border-radius:12px}.install-shell{width:min(960px,calc(100% - 32px));margin:0 auto;padding:clamp(34px,7vw,76px) 0 64px}.install-hero{text-align:center}.eyebrow,.guide-badge,.online-badge{display:inline-flex;padding:6px 12px;border-radius:999px;font-size:14px;font-weight:800}.eyebrow,.guide-badge{background:#0b3968;color:#82c8ff}.online-badge{background:#103c2d;color:#8ee4b8}.install-hero h1{margin:18px 0 12px;font-size:clamp(30px,6vw,54px);line-height:1.12;letter-spacing:-.03em}.install-hero p{max-width:760px;margin:0 auto;color:#aebed1;font-size:clamp(16px,2.5vw,19px);line-height:1.8}.detected-platform{width:max-content;max-width:100%;margin:22px auto 0;padding:11px 16px;border:1px solid rgba(85,177,255,.38);border-radius:12px;background:rgba(5,45,86,.75);color:#d7efff}.platform-panel,.guide-panel,.delivery-note{margin-top:28px;border:1px solid rgba(137,182,232,.24);border-radius:22px;background:rgba(17,24,37,.95);box-shadow:0 20px 55px rgba(0,0,0,.27)}.platform-panel{padding:24px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:20px}.section-heading.compact{margin-bottom:18px}.section-heading>div{display:flex;align-items:center;gap:12px}.section-heading span{display:grid;place-items:center;width:38px;height:38px;border-radius:11px;background:#0e3d6b;color:#83caff;font-weight:800}.section-heading h2{margin:0;font-size:22px}.section-heading small{color:#8f9db0}.platform-choices{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.platform-choices button{display:flex;min-height:78px;padding:14px;flex-direction:column;align-items:flex-start;justify-content:center;gap:4px;border:1px solid #455166;border-radius:14px;background:#1a202b;color:#e6f1ff;cursor:pointer;text-align:left}.platform-choices button b{font-size:17px}.platform-choices button small{color:#94a5ba}.platform-choices button[aria-selected="true"]{border-color:#56b7ff;background:linear-gradient(135deg,#0b5ba3,#0b3d78);color:#fff;box-shadow:0 0 0 3px rgba(73,172,255,.13)}.platform-choices button[aria-selected="true"] small{color:#cbe9ff}.guide-panel{display:grid;grid-template-columns:86px 1fr;overflow:hidden}.guide-number{display:flex;justify-content:center;padding-top:30px;background:linear-gradient(180deg,#0b3d70,#07294e);font-size:22px;font-weight:800;color:#8bd0ff}.guide-content{padding:30px}.guide-heading{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.guide-content h2{margin:14px 0 8px;font-size:27px}.guide-summary{margin:0 0 14px;color:#b7c6d8;line-height:1.7}.guide-content ol{margin:0 0 22px;padding-left:24px;color:#cbd6e4;line-height:1.9}.package-card{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:0 0 18px;padding:15px 17px;border:1px solid rgba(91,191,255,.36);border-radius:14px;background:#0a2948}.package-card>div{display:flex;flex-direction:column;gap:5px}.package-card span,.package-card code{color:#9fc9e8;font-size:13px}.package-card code{text-align:right}.embedded-warning{margin:0 0 18px;padding:14px 16px;border:1px solid #825943;border-radius:12px;background:#2b1d16;color:#ffd2b5;line-height:1.65}.guide-actions{display:grid;grid-template-columns:1.3fr 1fr;gap:12px}.install-primary,.install-secondary,.enter-button,.install-actions button{min-height:52px;border-radius:14px;font-weight:800}.install-primary{border:0;background:linear-gradient(135deg,#1684ff,#0756d7);color:#fff;cursor:pointer;box-shadow:0 12px 28px rgba(7,86,215,.3)}.install-secondary{border:1px solid #49627e;background:#182334;color:#dcecff;cursor:pointer}.install-primary:disabled,.install-secondary:disabled{opacity:.55;cursor:not-allowed}.install-status{min-height:24px;margin:14px 0 0;color:#92cfff;line-height:1.6}.install-status.success{color:#85e2b1}.install-status.warning{color:#ffd2a3}.install-status.working{color:#9fcfff}.delivery-note{padding:22px 24px}.coverage-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.coverage-grid article{padding:17px;border:1px solid #333f50;border-radius:14px;background:#141c28}.coverage-grid b{font-size:17px}.coverage-grid p{margin:8px 0 0;color:#a5b4c8;line-height:1.65}.install-actions{display:grid;grid-template-columns:1.4fr 1fr;gap:12px;margin-top:22px}.enter-button,.install-actions button{display:grid;place-items:center;text-decoration:none;border:1px solid #3f536e}.enter-button{background:#f5f9ff;color:#08111f}.install-actions button{background:#171f2b;color:#dce8f7;cursor:pointer}@media(max-width:680px){.install-header{min-height:74px;padding:12px 16px}.install-header a{font-size:13px;padding:9px 10px}.install-shell{width:min(100% - 22px,960px);padding-top:30px}.install-hero{text-align:left}.detected-platform{width:100%;margin-left:0}.install-hero h1{font-size:34px}.platform-panel{padding:18px}.section-heading{align-items:flex-start;flex-direction:column}.platform-choices{grid-template-columns:repeat(2,minmax(0,1fr))}.guide-panel{grid-template-columns:54px 1fr}.guide-content{padding:22px 18px}.guide-number{padding-top:24px}.guide-actions,.install-actions,.coverage-grid{grid-template-columns:1fr}.package-card{align-items:flex-start;flex-direction:column}.package-card code{text-align:left;word-break:break-all}}@media(prefers-reduced-motion:no-preference){.platform-panel,.guide-panel,.delivery-note{animation:rise .45s ease both}.guide-panel{animation-delay:.06s}.delivery-note{animation-delay:.12s}@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}}
