:root{color-scheme:light;--ink:#18232f;--muted:#77808e;--line:#e2e6eb;--green:#294dde;--pale:#f0f3ff;--paper:#fff;--radius:18px}
*{box-sizing:border-box}body{margin:0;background:#f6f7f9;color:var(--ink);font:15px/1.65 "Segoe UI","Microsoft YaHei",system-ui,sans-serif;-webkit-font-smoothing:antialiased}main{max-width:1250px;margin:auto;padding:0 38px}a{color:var(--green)}button,input,textarea,select{font:inherit}button,a,input,textarea,select{outline-offset:4px}button:focus-visible,a:focus-visible{outline:3px solid #7190ff}
header,.row,.actions{display:flex;align-items:center;justify-content:space-between;gap:16px}.site-header{height:98px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:18px;color:var(--ink);text-decoration:none;letter-spacing:-.3px}.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:11px;background:#1e2b39;color:white;font-size:25px;font-weight:400}.brand-divider{font-weight:400;color:#c4cbd3;margin:0 4px}.brand-product{font-size:14px;font-weight:500;color:#6f7781}
.hero{text-align:center;padding:51px 0 30px}.eyebrow{font-size:12px;font-weight:600;letter-spacing:1px;display:inline-flex;align-items:center;gap:9px;color:#5b6572;margin:0 0 12px}.status-dot{width:7px;height:7px;background:#6e9d65;border-radius:50%}h1{font-size:clamp(30px,4vw,46px);font-weight:750;line-height:1.35;letter-spacing:-1.8px;margin:0 0 12px}.hero h1 span{color:#5c6776}.hero>p:last-child{color:var(--muted);margin:0;font-size:15px}h2{font-size:19px;letter-spacing:-.4px;margin:0;font-weight:700}h3{font-size:27px;font-weight:650;letter-spacing:-1px;margin:12px 0 25px}
.flow-steps{display:flex;list-style:none;margin:6px auto 40px;padding:0;max-width:780px;justify-content:space-between;gap:12px}.flow-steps li{display:flex;align-items:center;gap:9px;color:#8c939e;font-size:13px;white-space:nowrap}.flow-steps li:not(:last-child){flex:1}.flow-steps li:not(:last-child)::after{content:"";height:1px;background:#dce1e7;flex:1;margin:0 5px}.flow-steps li>span{font-size:11px;display:grid;place-items:center;border:1px solid #dce1e7;width:27px;height:27px;border-radius:50%;font-variant-numeric:tabular-nums}.flow-steps .active{color:var(--ink);font-weight:650}.flow-steps .active>span{background:var(--ink);border-color:var(--ink);color:white}.flow-steps .done>span{background:#e6ecff;color:var(--green);border-color:#d5dfff}
.upgrade-layout{display:grid;grid-template-columns:310px minmax(0,1fr);align-items:start;gap:26px}.panel{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:28px;margin:20px 0;box-shadow:0 6px 18px #14223403}.account-panel{padding:24px;margin:0}.section-heading{display:flex;gap:11px;align-items:flex-start;margin-bottom:22px}.section-heading p{font-size:12px;color:var(--muted);margin:4px 0 0}.section-number{font-size:10px;border:1px solid var(--line);border-radius:7px;line-height:25px;text-align:center;min-width:26px;color:#8b939d;margin-top:2px}.plans-panel{padding:24px 0 0;min-width:0}.plans-panel .section-heading{margin-bottom:18px}
label{display:block;font-size:13px;font-weight:600;margin:16px 0 8px}input,textarea,select{display:block;width:100%;border:1px solid #dce1e8;border-radius:10px;padding:12px 14px;background:#fafbfc;color:var(--ink);transition:border-color .15s,box-shadow .15s}input:focus,textarea:focus,select:focus{outline:0;border-color:#6d8aef;box-shadow:0 0 0 3px #3151dd12}textarea{resize:vertical;min-height:100px;font-size:13px;line-height:1.7}textarea::placeholder,input::placeholder{color:#a0a6af}.account-panel textarea{min-height:148px}.hint{font-size:12px;color:var(--muted)}button,.pay-link{border:1px solid transparent;border-radius:10px;padding:11px 17px;font-weight:600;background:var(--green);color:white;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:10px;transition:background .15s,transform .15s;font-size:13px}button:hover:not(:disabled),.pay-link:hover{background:#2342bd}button:active:not(:disabled){transform:translateY(1px)}button:disabled{cursor:not-allowed;background:#eef0f3;color:#9aA1ac;border-color:#e7e9ed}button.secondary{background:white;color:#505d70;border-color:var(--line)}button.secondary:hover:not(:disabled){background:#f2f4f8}button.secondary:disabled{background:#edeff2;color:#9aa1ac;border-color:transparent}.wide{width:100%;margin-top:6px}.account-note{display:flex;gap:8px;margin-top:22px;padding-top:16px;border-top:1px solid #eef0f4;font-size:11px;color:#8b939f}.account-note span{font-size:16px;color:#768299}
.account-strip{border:1px solid var(--line);background:#f0f2f5;border-radius:10px;display:flex;align-items:center;gap:10px;min-height:43px;padding:10px 14px;margin-bottom:17px}.account-strip p{font-size:12px;color:#828b98;margin:0;overflow-wrap:anywhere;min-width:0}.account-indicator{flex-shrink:0;width:6px;height:6px;background:#a6aeb8;border-radius:50%}.account-strip.verified{background:#edf4ee;border-color:#dce8de}.verified .account-indicator{background:#66966b}.verified p{color:#4b7052}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.offer{position:relative;display:flex;flex-direction:column;min-width:0;border:1px solid #dce1e8;background:white;padding:22px 19px 18px;border-radius:15px;min-height:280px;transition:border-color .2s,box-shadow .2s}.offer:not(.is-unavailable):not(.is-placeholder):hover{border-color:#849bec;box-shadow:0 8px 25px #3045a50a}.offer-kicker{font-size:9px;font-weight:600;letter-spacing:1.2px;color:#8a94a5}.price{font-size:31px;font-weight:700;letter-spacing:-1.2px;line-height:1.4;margin:0 0 13px;white-space:nowrap}.price span{font-size:10px;font-weight:400;color:#98a0ab;letter-spacing:0;display:block;margin-top:4px}.offer-description{font-size:12px;color:#7b8694;margin:0 0 12px;line-height:1.8;min-height:22px}.offer .quote-expiry{font-size:10px;margin:0 0 17px}.offer button{width:100%;margin-top:auto;padding:10px 6px;font-size:12px}.is-unavailable{background:#ebedf1;border-color:#e1e4e9;color:#8b929d;box-shadow:none}.is-current .offer-kicker{color:#727d8c;letter-spacing:0}.is-unavailable h3{color:#838c99}.is-unavailable .price{color:#b1b7c0}.is-placeholder .pending-price{color:#bdc4ce}.is-placeholder h3{color:#7c8795}.plans-footnote{text-align:center;font-size:11px;color:#9ca3ae;margin:18px 0 0}
#message{white-space:pre-wrap;color:#a54e34;overflow-wrap:anywhere;background:#fff2ed;border:1px solid #f0dcd4;border-radius:10px;padding:12px 16px;font-size:13px}#message:empty{display:none}#order-panel{max-width:920px;margin:0 auto 25px}#order-panel .row{border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:20px}#order-details dl{background:#f7f8fa;border-radius:12px;padding:20px;margin-bottom:26px}#payment-controls{display:grid;grid-template-columns:1fr auto;gap:12px}#payment-controls label,#payment-controls .hint{grid-column:1/-1;margin:0}#paid-controls{border-top:1px solid var(--line);padding-top:10px}#lookup-panel{max-width:920px;margin:28px auto}#lookup-form{display:grid;grid-template-columns:1fr 1fr auto;align-items:end;gap:12px}#lookup-panel>p{font-size:13px;color:var(--muted)}
dl{display:grid;grid-template-columns:155px minmax(0,1fr);gap:12px;margin:20px 0;font-size:13px}dt{color:var(--muted)}dd{margin:0;overflow-wrap:anywhere;font-weight:500}.item{border-top:1px solid var(--line);padding:14px 0;overflow-wrap:anywhere;font-size:13px}.actions{justify-content:flex-start;flex-wrap:wrap;margin-top:20px}.check{display:flex;align-items:flex-start;gap:10px;font-size:12px;font-weight:400}.check input{width:15px;height:15px;flex-shrink:0;margin-top:3px;accent-color:var(--green)}.important{background:#fff7e8;border:1px solid #f0e2c5;border-radius:10px;padding:13px 16px;font-size:12px;color:#7c6941;overflow-wrap:anywhere}dialog{color:var(--ink);background:white;border:1px solid var(--line);border-radius:20px;padding:30px;max-width:550px;width:calc(100% - 32px);max-height:90vh;overflow:auto;box-shadow:0 25px 90px #10203833}dialog::backdrop{background:#17233575;backdrop-filter:blur(5px)}dialog h2{font-size:23px;margin-bottom:16px}dialog>p{font-size:13px;overflow-wrap:anywhere}pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#f4f6f9;border:1px solid var(--line);border-radius:10px;padding:18px;font-size:12px}footer{border-top:1px solid var(--line);margin-top:52px;padding:23px 0 30px;font-size:11px;color:#969eaa;display:flex;justify-content:space-between;gap:12px}
.admin-page{max-width:1440px;padding-top:30px}.admin-page header h1{font-size:30px}.table-scroll{overflow:auto}table{width:100%;border-collapse:collapse;font-size:12px}th,td{text-align:left;padding:15px 12px;border-bottom:1px solid var(--line);white-space:nowrap}th{color:var(--muted);font-size:11px;font-weight:500}.filters{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0}.filters input{flex:2;min-width:240px}.filters select{flex:1;min-width:150px}.badge{background:#f0f3f8;padding:6px 12px;border:1px solid #e5e9ef;border-radius:7px;display:inline-block;margin:3px;font-size:11px}.hidden,[hidden]{display:none!important}
@media(min-width:1000px){#upgrade-app[data-order] .hero{padding:30px 0}}@media(max-width:1050px){main{padding:0 24px}.upgrade-layout{grid-template-columns:260px minmax(0,1fr);gap:20px}.account-panel{padding:20px}.offer{padding:18px 13px}.price{font-size:27px}h3{font-size:25px}}
@media(max-width:820px){.upgrade-layout{grid-template-columns:1fr}.account-panel textarea{min-height:100px}.plans-panel{padding-top:10px}.hero{padding-top:35px}.flow-steps{margin-bottom:28px}.offer{min-height:260px}.account-panel .section-heading{margin-bottom:12px}.account-note{margin-top:14px}.brand-product,.brand-divider{display:none}#lookup-form{grid-template-columns:1fr}#lookup-form button{justify-self:start}}
@media(max-width:540px){main{padding:0 18px}.site-header{height:78px}.brand{font-size:16px;gap:8px}.brand-mark{width:30px;height:30px;font-size:22px}.site-header button{padding:8px 11px;font-size:11px}.hero{padding:32px 0 24px}h1{font-size:30px;letter-spacing:-1px}.hero>p:last-child{font-size:12px}.eyebrow{font-size:10px;letter-spacing:.5px}.flow-steps{gap:5px}.flow-steps li{font-size:10px;gap:5px}.flow-steps li>span{width:21px;height:21px;font-size:9px}.flow-steps li:not(:last-child)::after{margin:0 2px}.grid{grid-template-columns:1fr;gap:12px}.offer{display:grid;grid-template-columns:1fr auto;gap:0 14px;min-height:0;padding:20px}.offer-kicker{grid-column:1}.offer h3{grid-column:1;margin:7px 0 12px;font-size:28px}.offer .price{grid-column:2;grid-row:1/3;text-align:right;align-self:center;margin:0;font-size:28px}.offer-description{grid-column:1/-1;margin:0 0 10px;min-height:0}.offer .quote-expiry{grid-column:1/-1;margin:0 0 12px}.offer button{grid-column:1/-1}.panel{padding:20px}.section-heading h2{font-size:18px}.account-strip{padding:10px 12px}.account-strip p{font-size:11px}dl{grid-template-columns:1fr;gap:3px}dd{margin-bottom:9px}dialog{padding:23px}.row{align-items:flex-start}.row button{font-size:11px;padding:8px 12px}footer{margin-top:35px;flex-direction:column;gap:3px}#payment-controls{grid-template-columns:1fr}#payment-controls button{width:100%}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
/* Emphasize the active step; retain a compact account summary after inspection. */
.upgrade-layout{overflow-anchor:none}
.upgrade-layout.is-switching{overflow:clip}
.upgrade-layout.is-switching .account-panel{overflow:clip}
.upgrade-layout.is-switching .account-panel>*,.upgrade-layout.is-switching .plans-panel>*{opacity:0}
.account-panel{transition:background-color .36s ease,border-color .36s ease,box-shadow .36s ease}
.upgrade-layout[data-stage="account"]{grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:32px}
.upgrade-layout[data-stage="account"] .account-panel{padding:32px;border-color:#cbd5f2;box-shadow:0 8px 28px #294dde08}
.upgrade-layout[data-stage="account"] .account-panel textarea{min-height:230px;font-size:14px}
.upgrade-layout[data-stage="account"] .account-panel h2{font-size:23px}
.upgrade-layout[data-stage="account"] .account-panel .section-heading p{font-size:13px}
.upgrade-layout[data-stage="account"] .account-panel .wide{padding:14px;font-size:14px}
.upgrade-layout[data-stage="account"] .plans-panel{padding-top:24px}
.upgrade-layout[data-stage="account"] .plans-panel h2{font-size:17px;color:#778291}
.upgrade-layout[data-stage="account"] .grid{grid-template-columns:1fr;gap:10px}
.upgrade-layout[data-stage="account"] .offer{min-height:0;display:grid;grid-template-columns:1fr auto;padding:15px 18px;background:#f1f3f6;gap:0 12px}
.upgrade-layout[data-stage="account"] .offer h3{grid-column:1;margin:5px 0;font-size:21px}
.upgrade-layout[data-stage="account"] .offer .price{grid-column:2;grid-row:1/3;font-size:23px;align-self:center;margin:0;text-align:right}
.upgrade-layout[data-stage="account"] .offer .offer-description{grid-column:1/-1;margin:4px 0 0;font-size:11px;min-height:0}
.upgrade-layout[data-stage="account"] .offer button{display:none}
.upgrade-layout[data-stage="plans"]{grid-template-columns:270px minmax(0,1fr)}
.upgrade-layout[data-stage="plans"] .account-panel{background:#f0f3f7;box-shadow:none}
.upgrade-layout[data-stage="plans"] .plans-panel{padding-top:0}
.upgrade-layout[data-stage="plans"] .plans-panel .section-heading h2{font-size:23px}
.upgrade-layout[data-stage="plans"] .account-panel .section-heading p{display:none}
.upgrade-layout[data-stage="plans"] .section-heading{margin-bottom:18px}
.checked-label{display:block;color:#54845c;font-size:11px}.checked-label::before{content:'✓';margin-right:7px}
#checked-email{font-size:13px;font-weight:600;overflow-wrap:anywhere;margin:12px 0 9px}
.checked-plan{display:inline-block;font-size:11px;border:1px solid #dce2ee;background:white;color:#61708a;padding:3px 9px;border-radius:6px;margin-bottom:16px}
.dialog-error{background:#fff2ed;color:#a54e34;border:1px solid #f0dcd4;border-radius:10px;padding:12px 14px;font-size:13px;overflow-wrap:anywhere;white-space:pre-wrap}
.dialog-error:empty{display:none}.dialog-error:focus{outline:2px solid #dba991;outline-offset:2px}
@media(max-width:1050px){.upgrade-layout[data-stage="account"]{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:22px}.upgrade-layout[data-stage="plans"]{grid-template-columns:225px minmax(0,1fr)}}
@media(max-width:820px){.upgrade-layout[data-stage="account"],.upgrade-layout[data-stage="plans"]{grid-template-columns:1fr;gap:22px}.upgrade-layout[data-stage="account"] .account-panel{padding:24px}.upgrade-layout[data-stage="account"] .account-panel textarea{min-height:210px}.upgrade-layout[data-stage="account"] .plans-panel{padding-top:0}.upgrade-layout[data-stage="plans"] .account-panel{padding:18px 22px}.upgrade-layout[data-stage="plans"] .account-panel .section-heading{margin-bottom:10px}.upgrade-layout[data-stage="plans"] .account-panel .account-note{display:none}#checked-account .wide{width:auto;padding:8px 12px;display:block;margin-top:0}.checked-plan{margin-bottom:10px}}
@media(prefers-reduced-motion:reduce){.upgrade-layout{transition:none}}
.header-actions,.customer-nav{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.header-actions{justify-content:flex-end}.customer-nav select{width:auto;padding:7px 10px;font-size:12px}.back-recharge{font-size:13px;font-weight:600;text-underline-offset:4px}.back-recharge::before{content:'← ';}.section-back{display:inline-block;margin:0 0 18px}dialog>.customer-nav{border-top:1px solid var(--line);margin-top:24px;padding-top:18px;justify-content:space-between}.site-header{height:auto;min-height:98px;padding:18px 0;flex-wrap:wrap}.brand{flex-wrap:wrap}button{overflow-wrap:anywhere}.flow-steps li{white-space:normal;min-width:0}.flow-steps li>span{flex-shrink:0}.flow-steps li:not(:last-child)::after{min-width:8px}
html:not([lang="zh-CN"]) .hero h1 span::before{content:' '}
@media(max-width:820px){.site-header{gap:12px}.header-actions{width:100%;justify-content:space-between;gap:10px}.header-actions .customer-nav{gap:12px}.flow-steps{display:grid;grid-template-columns:1fr 1fr;gap:12px}.flow-steps li:not(:last-child)::after{display:none}.flow-steps li{font-size:12px}.hero h1{letter-spacing:-.6px}.row{flex-wrap:wrap}#mine-list button{text-align:left;max-width:100%;word-break:break-word}}

#credentials-dialog>.customer-nav{justify-content:flex-end}