/* v272: V4.1 全站 UA/UI 主页面统一壳。只服务一级入口页，避免旧层叠继续打架。 */
:root{
  --v272-blue:#2563eb;--v272-blue2:#0ea5e9;--v272-green:#10b981;--v272-ink:#0b2845;--v272-muted:#49627e;
  --v272-line:#b9d7ff;--v272-card:#ffffff;--v272-bg:#eaf6ff;--v272-soft:#f7fbff;
  --v272-shadow:0 18px 42px rgba(37,99,235,.14);
}
html:has(body.v272-hub),body.v272-hub{margin:0;min-height:100%;background:linear-gradient(180deg,#eaf6ff 0%,#f8fcff 72%,#fff7df 100%);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--v272-ink);}
body.v272-hub *{box-sizing:border-box}
.v272-wrap{width:min(1180px,calc(100vw - 42px));margin:0 auto;padding:18px 0 118px;}
.v272-top{height:70px;border:3px solid var(--v272-line);background:rgba(255,255,255,.96);border-radius:26px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;box-shadow:0 10px 28px rgba(37,99,235,.10);}
.v272-brand{display:flex;align-items:center;gap:14px;color:var(--v272-ink);text-decoration:none;font-weight:1000;min-width:0}.v272-brand-icon{width:48px;height:48px;border-radius:18px;background:#eef7ff;border:2px solid #cfe2ff;display:grid;place-items:center;font-size:30px}.v272-brand strong{display:block;font-size:29px;line-height:1}.v272-brand small{display:block;font-size:16px;color:var(--v272-muted);font-weight:900;margin-top:4px}.v272-actions{display:flex;align-items:center;gap:10px}.v272-pill{height:48px;border-radius:999px;border:2px solid #cfe2ff;background:#f8fbff;color:#1d4ed8;text-decoration:none;padding:0 18px;display:inline-flex;align-items:center;gap:6px;font-size:20px;font-weight:1000;white-space:nowrap}.v272-pill.primary{background:#2563eb;color:#fff;border-color:#2563eb}
.v272-hero{margin-top:14px;border:3px solid var(--v272-line);border-radius:32px;background:rgba(255,255,255,.96);box-shadow:var(--v272-shadow);padding:26px;display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:18px;align-items:stretch;min-height:330px}.v272-hero-main{display:flex;flex-direction:column;justify-content:center;min-width:0}.v272-step{display:inline-flex;align-self:flex-start;height:42px;align-items:center;padding:0 18px;border-radius:999px;background:#fffbeb;border:3px solid #facc15;color:#92400e;font-size:20px;font-weight:1000;margin-bottom:16px}.v272-hero h1{margin:0 0 10px;font-size:clamp(38px,5vw,64px);line-height:1.02;letter-spacing:-.05em;font-weight:1000}.v272-hero p{margin:0 0 22px;font-size:22px;line-height:1.35;color:var(--v272-muted);font-weight:900;max-width:720px}.v272-start{min-height:112px;border-radius:34px;background:linear-gradient(100deg,#2563eb 0%,#0ea5e9 56%,#10b981 100%);display:grid;grid-template-columns:86px minmax(0,1fr) 150px;align-items:center;gap:20px;padding:18px 22px;color:#fff;text-decoration:none;box-shadow:0 20px 36px rgba(37,99,235,.24);touch-action:manipulation}.v272-start-icon{width:76px;height:76px;border-radius:26px;background:rgba(255,255,255,.18);border:3px solid rgba(255,255,255,.25);display:grid;place-items:center;font-size:42px}.v272-start strong{display:block;font-size:38px;line-height:1.03;font-weight:1000;letter-spacing:-.04em}.v272-start small{display:block;margin-top:6px;font-size:19px;font-weight:900;opacity:.96}.v272-start em{font-style:normal;width:132px;height:66px;border-radius:999px;background:#fff;color:#1d4ed8;display:grid;place-items:center;font-size:26px;font-weight:1000}.v272-side{display:grid;gap:12px}.v272-side a,.v272-side div{border:3px solid #dbeafe;border-radius:28px;background:#f8fbff;color:var(--v272-ink);text-decoration:none;display:grid;place-items:center;text-align:center;padding:14px}.v272-side span{font-size:48px;line-height:1}.v272-side b{display:block;font-size:24px;margin-top:5px}.v272-side small{display:block;font-size:15px;color:var(--v272-muted);font-weight:900;margin-top:3px}
.v272-section{margin-top:14px;border:3px solid var(--v272-line);border-radius:30px;background:rgba(255,255,255,.94);box-shadow:0 10px 26px rgba(37,99,235,.08);padding:18px}.v272-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:12px}.v272-section h2{margin:0;font-size:30px;line-height:1.1;letter-spacing:-.03em}.v272-section p{margin:4px 0 0;color:var(--v272-muted);font-size:18px;font-weight:900}.v272-card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.v272-card{min-height:96px;border:3px solid #dbeafe;border-radius:24px;background:#f8fbff;color:var(--v272-ink);text-decoration:none;display:grid;grid-template-columns:58px minmax(0,1fr);align-items:center;gap:12px;padding:14px;box-shadow:0 8px 20px rgba(37,99,235,.06);touch-action:manipulation}.v272-card:hover{border-color:#93c5fd}.v272-card i{font-style:normal;width:54px;height:54px;border-radius:18px;background:#eef7ff;border:2px solid #cfe2ff;display:grid;place-items:center;font-size:32px}.v272-card b{display:block;font-size:24px;line-height:1.08;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.v272-card small{display:block;margin-top:4px;font-size:15px;color:var(--v272-muted);font-weight:900;line-height:1.15;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.v272-bottom{position:fixed;left:50%;bottom:max(12px,env(safe-area-inset-bottom));transform:translateX(-50%);width:min(860px,calc(100vw - 34px));height:76px;border:3px solid #dbeafe;border-radius:30px;background:rgba(255,255,255,.96);box-shadow:0 18px 38px rgba(37,99,235,.18);z-index:80;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:6px;padding:7px}.v272-bottom a,.v272-bottom button{border:0;background:transparent;border-radius:22px;color:var(--v272-ink);text-decoration:none;font:inherit;font-weight:1000;display:grid;place-items:center;cursor:pointer;min-width:0}.v272-bottom span{font-size:26px;line-height:1}.v272-bottom b{font-size:14px;line-height:1;white-space:nowrap}.v272-bottom .active{background:#2563eb;color:#fff}.v272-more{position:fixed;left:50%;bottom:98px;transform:translateX(-50%) translateY(12px);width:min(820px,calc(100vw - 36px));max-height:min(46vh,360px);overflow:auto;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;padding:16px;border:3px solid #bfdbfe;border-radius:30px;background:rgba(255,255,255,.98);box-shadow:0 20px 44px rgba(37,99,235,.18);z-index:95;opacity:0;visibility:hidden;pointer-events:none;transition:.16s ease}.v272-more a{min-height:72px;border-radius:20px;border:2px solid #dbeafe;background:#f8fbff;color:var(--v272-ink);text-decoration:none;font-size:20px;font-weight:1000;display:flex;align-items:center;justify-content:center;gap:10px}.v272-more span{font-size:28px}.v272-scrim{position:fixed;inset:0;background:rgba(15,42,68,.08);z-index:90;opacity:0;visibility:hidden;pointer-events:none}.v272-more-open .v272-more{opacity:1;visibility:visible;pointer-events:auto;transform:translateX(-50%) translateY(0)}.v272-more-open .v272-scrim{opacity:1;visibility:visible;pointer-events:auto;transform:none}
@media (orientation:landscape) and (max-height:760px){.v272-wrap{padding-top:8px;padding-bottom:96px}.v272-top{height:58px}.v272-brand-icon{width:42px;height:42px;font-size:26px}.v272-brand strong{font-size:25px}.v272-brand small{display:none}.v272-pill{height:40px;font-size:17px;padding:0 13px}.v272-hero{min-height:260px;margin-top:10px;padding:16px;grid-template-columns:minmax(0,1fr) 188px;gap:12px;border-radius:26px}.v272-step{height:32px;font-size:17px;margin-bottom:10px}.v272-hero h1{font-size:42px}.v272-hero p{font-size:18px;margin-bottom:14px}.v272-start{min-height:92px;grid-template-columns:64px minmax(0,1fr) 116px;border-radius:28px;padding:12px 16px;gap:14px}.v272-start-icon{width:58px;height:58px;font-size:34px;border-radius:20px}.v272-start strong{font-size:31px}.v272-start small{font-size:16px}.v272-start em{width:108px;height:54px;font-size:23px}.v272-side span{font-size:34px}.v272-side b{font-size:20px}.v272-side small{font-size:13px}.v272-section{margin-top:10px;padding:12px}.v272-section h2{font-size:24px}.v272-section p{font-size:15px}.v272-card-grid{gap:9px}.v272-card{min-height:70px;border-radius:18px;grid-template-columns:44px minmax(0,1fr);gap:8px;padding:8px 10px}.v272-card i{width:40px;height:40px;font-size:25px;border-radius:14px}.v272-card b{font-size:20px}.v272-card small{font-size:12px}.v272-bottom{height:64px;bottom:8px}.v272-bottom span{font-size:23px}.v272-bottom b{font-size:12px}.v272-more{bottom:82px;grid-template-columns:repeat(4,1fr);padding:12px;gap:9px}.v272-more a{min-height:58px;font-size:17px}}
@media (max-width:900px){.v272-hero{grid-template-columns:1fr}.v272-side{grid-template-columns:1fr 1fr}.v272-card-grid{grid-template-columns:repeat(2,1fr)}.v272-more{grid-template-columns:repeat(2,1fr)}.v272-start{grid-template-columns:62px 1fr;}.v272-start em{grid-column:1/-1;width:100%;}}