:root{--navy:#16479E;--navy2:#0E3576;--navy-soft:#EDF3FD;--navy-line:#CBD9F0;--y:#FDB913;--y2:#FFCB4D;--ink:#0B0B0B;--ink2:#3A3A3A;--mute:#6B7280;--line:#E3E7EE;--bg:#FFFFFF;--card:#fff;--green:#2F8F5B;--green-soft:#E3F3E9;--warn:#9A6A00;--warn-soft:#FFF2D4;--bad:#C8433B;--bad-soft:#FBE5E3}
*{box-sizing:border-box}
body{margin:0;font-family:Montserrat,system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55;font-size:15px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}a{color:inherit;text-underline-offset:3px}
h1,h2,h3{font-family:Montserrat,system-ui,sans-serif;letter-spacing:-.025em;line-height:1.1;margin:0}
h1{font-size:clamp(28px,4vw,42px);font-weight:800}h2{font-size:22px;font-weight:800}h3{font-size:16px;font-weight:700}
.wrap{width:min(1000px,94vw);margin:0 auto}
nav{position:sticky;top:0;z-index:50;background:var(--navy);color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.08) inset}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:62px;gap:16px}
nav img{height:32px}nav a{text-decoration:none;font-weight:600;font-size:12.5px;opacity:.9;white-space:nowrap}
.hero{background:linear-gradient(160deg,#16479E 0%,#0E3576 55%,#092851 100%);color:#fff;padding:52px 0 46px}
.hero .eyebrow{color:var(--y)}
.hero p{color:#D3DDEE;max-width:58ch;font-size:16px}
.eyebrow{font-size:11px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--navy)}
main{padding:34px 0 60px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:22px;margin-top:16px;box-shadow:0 1px 2px rgba(11,40,81,.04),0 10px 28px rgba(11,40,81,.05)}
.tiers{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin-top:-34px;position:relative;z-index:2}
.tier{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:0 1px 2px rgba(11,40,81,.04),0 12px 30px rgba(11,40,81,.07)}
.tier .pct{font-size:38px;font-weight:800;letter-spacing:-.03em;color:var(--navy);line-height:1}
.tier b{display:block;margin-top:6px;font-size:15px}
.tier small{display:block;color:var(--mute);font-size:12.5px;margin-top:4px}

.lb{display:block;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--mute);margin:14px 0 4px}
input,select,textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;font-family:inherit;font-size:14px;background:#fff;color:var(--ink)}
textarea{min-height:88px;resize:vertical}
.f2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:640px){.f2{grid-template-columns:1fr}}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:12px 20px;border-radius:999px;font-weight:700;font-size:14px;border:2px solid transparent;cursor:pointer;font-family:inherit;text-decoration:none;white-space:nowrap;transition:transform .12s ease,box-shadow .2s ease,background .2s ease}
.btn:hover{transform:translateY(-1px)}
.btn-y{background:var(--y);color:#0B0B0B;box-shadow:0 2px 8px rgba(22,71,158,.10)}.btn-y:hover{background:var(--y2);box-shadow:0 8px 20px rgba(253,185,19,.34)}
.btn-o{background:#fff;border-color:#CBD9F0;color:var(--navy)}.btn-o:hover{border-color:var(--y);color:#0B0B0B}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin-top:14px}
.step{border:1px solid var(--line);border-radius:13px;padding:15px;background:#F5F8FD}
.step .n{width:26px;height:26px;border-radius:999px;background:var(--navy);color:#fff;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:800}
.step h3{margin:8px 0 4px}
.step p{margin:0;font-size:13px;color:var(--ink2)}
.hint{font-size:12.5px;color:var(--mute);margin-top:6px}
.sect{font-size:13px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;color:var(--navy);border-bottom:2px solid var(--y);padding-bottom:5px;margin:26px 0 8px}
.msg{font-size:13.5px;padding:12px 14px;border-radius:11px;margin-top:12px}
.msg.ok{background:var(--green-soft);color:var(--green)}
.msg.warn{background:var(--warn-soft);color:var(--warn)}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.faq{border-top:1px solid var(--line);padding:12px 0}
.faq summary{cursor:pointer;font-weight:700;font-size:14.5px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq p{margin:8px 0 0;font-size:13.5px;color:var(--ink2)}
::selection{background:var(--y);color:#0B0B0B}

/* One legal line, the same on every page, so the Terms are never more than a
   glance away wherever a customer happens to be. */
.aeralegal{max-width:720px;margin:30px auto 0;padding:0 20px 30px;
 font-size:12px;line-height:1.7;color:#6B7280;text-align:center}
.aeralegal a{color:inherit;text-underline-offset:3px}

.langsw{display:inline-flex;align-items:center;border:1px solid rgba(255,255,255,.45);background:transparent;border-radius:99px;padding:2px;cursor:pointer;font-family:inherit;line-height:1;overflow:hidden;vertical-align:middle}
.langsw span{display:block;padding:4px 8px;font-size:11px;font-weight:700;color:inherit;border-radius:99px;white-space:nowrap}
.langsw .l1{background:#fff;color:#16479E}
html[data-lang="zh"] .langsw .l1{background:transparent;color:inherit}
html[data-lang="zh"] .langsw .l2{background:#fff;color:#16479E}