:root{font-family:Inter,"Microsoft YaHei UI","PingFang SC",system-ui,sans-serif;color:#172b37;background:#f4f7f7;font-synthesis:none}
*{box-sizing:border-box}
body{margin:0;min-width:320px;line-height:1.55}
button,input{font:inherit}
button{cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.58}
a{color:inherit}
[hidden]{display:none!important}
.container{width:min(1120px,calc(100% - 40px));margin-inline:auto}
.site-header{height:72px;background:#fff;border-bottom:1px solid #e4ebec}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between}
.brand{display:inline-flex;align-items:center;gap:10px;color:#12323c;text-decoration:none;font-weight:750;letter-spacing:.01em}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:#057f82;color:#fff;font-weight:800;font-size:20px}
.header-tag{color:#60747e;font-size:13px;border:1px solid #dbe5e7;border-radius:100px;padding:6px 12px}
.header-link{text-decoration:none}
.header-link:hover{border-color:#087f81;color:#087f81}
.environment-banner{margin-top:24px;padding:12px 17px;background:#fff7e9;border:1px solid #f3d9ac;border-radius:10px;color:#815218;font-size:14px}
.hero{padding:72px 0 46px;max-width:720px}
.eyebrow{color:#057f82;font-size:13px;font-weight:750;letter-spacing:.06em;text-transform:uppercase}
.eyebrow-dot{display:inline-block;width:7px;height:7px;margin-right:5px;border-radius:50%;background:#0a9d92;vertical-align:2px}
h1{font-size:clamp(31px,4vw,48px);line-height:1.16;letter-spacing:-.035em;margin:15px 0 16px;color:#112b35}
.hero p{font-size:17px;line-height:1.8;color:#59707b;margin:0}
.checkout-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(320px,1fr);gap:22px;align-items:start}
.panel{background:#fff;border:1px solid #e0e9ea;border-radius:18px;box-shadow:0 12px 36px rgba(19,60,66,.045)}
.plan-panel,.pay-panel{padding:28px}
.section-heading{display:flex;align-items:center;gap:14px;margin-bottom:25px}
.step{display:grid;place-items:center;flex:none;width:36px;height:36px;border-radius:11px;background:#e5f4f2;color:#087f81;font-size:13px;font-weight:800}
h2{font-size:20px;line-height:1.25;margin:0 0 3px;letter-spacing:-.02em}
.section-heading p{margin:0;color:#8a9ba2;font-size:13px}
.plan-list{display:grid;gap:12px}
.loading{color:#82949b}
.plan-option{position:relative;display:flex;align-items:center;gap:16px;border:1.5px solid #dce7e8;border-radius:13px;padding:18px 20px;cursor:pointer;transition:border-color .15s,box-shadow .15s,background .15s}
.plan-option:hover,.plan-option:focus-within{border-color:#55a9a7}
.plan-option:has(input:checked){border-color:#087f81;background:#f3fbf9;box-shadow:0 0 0 3px rgba(8,127,129,.08)}
.plan-option input,.pay-option input{position:absolute;opacity:0;pointer-events:none}
.plan-indicator{display:grid;place-items:center;flex:none;width:20px;height:20px;border:1.5px solid #b6c8ca;border-radius:50%;background:#fff}
.plan-option:has(input:checked) .plan-indicator{border:6px solid #087f81}
.plan-copy{flex:1;min-width:0}
.plan-copy strong{display:block;font-size:17px;line-height:1.25}
.plan-copy small{color:#81959d;font-size:13px}
.plan-price{white-space:nowrap;color:#18323b;font-size:22px;font-weight:800;letter-spacing:-.04em}
.plan-price small{font-size:14px;letter-spacing:0}
.pay-options{display:grid;gap:10px}
.pay-option{position:relative;display:flex;align-items:center;gap:12px;padding:15px;border:1.5px solid #dce7e8;border-radius:12px;cursor:pointer;font-weight:650}
.pay-option:hover,.pay-option:focus-within{border-color:#55a9a7}
.pay-option:has(input:checked){border-color:#087f81;background:#f3fbf9}
.pay-symbol{display:grid;place-items:center;width:27px;height:27px;border-radius:7px;color:#fff;font-size:15px;font-weight:800}
.pay-symbol.alipay{background:#1678f2}
.pay-symbol.wxpay{background:#2eaa5b}
.radio-indicator{margin-left:auto;width:18px;height:18px;border:1.5px solid #b6c8ca;border-radius:50%;background:#fff}
.pay-option:has(input:checked) .radio-indicator{border:5px solid #087f81}
.order-summary{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:29px 0 16px;padding-top:20px;border-top:1px solid #e7eeee;color:#617780;font-size:14px}
.order-summary strong{color:#102b35;font-size:29px;letter-spacing:-.04em}
.primary-button,.secondary-button{border:0;border-radius:10px;min-height:48px;padding:12px 20px;font-weight:700;text-decoration:none}
.primary-button{display:flex;justify-content:center;align-items:center;gap:9px;width:100%;background:#087f81;color:#fff;box-shadow:0 8px 18px rgba(8,127,129,.16)}
.primary-button:not(:disabled):hover{background:#046b6d}
.secondary-button{background:#e8f3f2;color:#086f70}
.secondary-button:hover{background:#d9ece9}
.customer-button{display:block;width:100%;margin-top:12px;min-height:44px;padding:10px 16px;border:1px solid #7db9b6;border-radius:10px;background:#fff;color:#087f81;font-weight:700}
.customer-button:hover{background:#f3fbf9}
.customer-dialog{position:fixed;width:min(460px,calc(100% - 28px));max-height:min(90vh,850px);padding:26px;border:0;border-radius:17px;box-shadow:0 24px 80px rgba(15,45,54,.28);text-align:center}
.customer-dialog::backdrop{background:rgba(13,34,42,.58)}
.customer-dialog h2{margin:0 30px 7px}
.customer-dialog p{margin:0 0 18px;color:#607780;font-size:14px}
.customer-dialog img{display:block;width:min(100%,330px);height:auto;max-height:65vh;object-fit:contain;margin:0 auto}
.dialog-close{position:absolute;right:12px;top:8px;width:36px;height:36px;border:0;background:transparent;color:#657c83;font-size:29px;line-height:1}
.form-message{min-height:1.5em;margin:12px 0 0;color:#b3532c;font-size:13px}
.small-note{font-size:12px;line-height:1.7;color:#8b9ca3;margin:16px 0 0}
.how-it-works{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:40px 0 70px}
.how-it-works>div{padding:17px 0;border-top:1px solid #dbe5e6}
.how-it-works span{color:#0a8888;font-size:13px;font-weight:800;margin-right:9px}
.how-it-works strong{font-size:14px}
.how-it-works p{margin:6px 0 0 30px;color:#84969d;font-size:13px}
.footer{border-top:1px solid #e1e9ea;padding:22px 0 35px;color:#9aacb1;font-size:12px}
.narrow-main{max-width:720px;padding-top:43px;padding-bottom:80px}
.narrow-main>.environment-banner{margin-top:0;margin-bottom:20px}
.back-link{display:inline-block;margin-bottom:22px;color:#57727c;text-decoration:none;font-size:14px}
.back-link:hover{text-decoration:underline}
.status-panel{padding:45px 44px;text-align:center}
.status-panel h1{font-size:clamp(25px,3vw,34px);margin:12px 0 10px}
.status-icon{display:grid;place-items:center;width:58px;height:58px;margin:0 auto 23px;border-radius:17px;background:#e2f3f0;color:#087f81;font-size:26px;font-weight:750}
.status-icon.success{background:#e2f5e9;color:#198650}
.status-text{color:#6b8189;margin:0 0 30px;line-height:1.7}
.detail-list{border-top:1px solid #edf1f2;border-bottom:1px solid #edf1f2;margin:24px 0;text-align:left}
.detail-list>div{display:flex;justify-content:space-between;align-items:baseline;gap:18px;padding:15px 0;border-bottom:1px solid #f0f3f3}
.detail-list>div:last-child{border-bottom:0}
.detail-list span{color:#8a9ba2;font-size:13px;white-space:nowrap}
.detail-list strong,.detail-list code{font-size:14px;overflow-wrap:anywhere;text-align:right}
.checkout-box{padding:20px;background:#f7faf9;border-radius:12px}
.checkout-box p{margin:0 0 17px;color:#607780;font-size:14px}
.checkout-box img{display:block;max-width:100%;margin:0 auto 20px;border:8px solid #fff;border-radius:10px;image-rendering:pixelated}
.checkout-box .button-link{margin:8px auto 0;max-width:300px}
.checkout-box .small-note{margin-top:12px}
.button-row{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:12px;margin-top:25px}
.button-row .primary-button{width:auto;min-width:220px}
.text-link{color:#087f81;font-size:14px;text-decoration:none}
.text-link:hover{text-decoration:underline}
.license-box{display:grid;justify-items:center;gap:14px;margin:28px 0;padding:23px;border-radius:13px;background:#f1faf8;border:1px solid #ccebe4}
.license-box span{font-size:13px;color:#5d7b7e}
.license-box code{font-size:clamp(14px,2.4vw,22px);font-weight:750;letter-spacing:.045em;overflow-wrap:anywhere}
.account-panel{padding:32px}
.account-panel h1,.admin-heading h1{font-size:30px;margin:0 0 8px}
.muted{color:#748a93;font-size:14px;margin:0 0 20px}
.tabs{display:flex;gap:10px;margin:22px 0}
.tabs .active-tab{background:#087f81;color:#fff}
.form-stack{display:grid;gap:14px;max-width:470px;margin:18px 0 10px}
.form-stack label{display:grid;gap:5px;color:#47616b;font-size:14px;font-weight:650}
.form-stack input,.form-stack select{width:100%;min-height:43px;padding:9px 12px;border:1px solid #cbdadd;border-radius:9px;background:#fff;color:#18323b}
.form-stack input:focus,.form-stack select:focus{outline:2px solid #75bbb8;outline-offset:1px}
.form-stack .inline-check{display:flex;align-items:center;gap:8px}
.form-stack .inline-check input{width:18px;min-height:18px}
.challenge{min-height:60px;margin:8px 0}
.account-heading,.admin-heading{display:flex;justify-content:space-between;align-items:start;gap:16px}
.record-list{display:grid;gap:8px;margin:18px 0}
.record{display:grid;gap:5px;padding:14px;border:1px solid #e1e9ea;border-radius:10px;background:#fbfdfc;text-align:left}
.record strong{font-size:14px;overflow-wrap:anywhere}
.record small{font-size:12px;color:#6e838c;overflow-wrap:anywhere}
.record code{font-size:13px;color:#087f81;overflow-wrap:anywhere}
.record-button{width:100%;cursor:pointer;color:inherit;font:inherit}
.record-button:hover{border-color:#087f81}
.record-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.record-actions .secondary-button{min-height:34px;padding:6px 10px;font-size:12px}
.issued-key{font-weight:700;color:#087f81;overflow-wrap:anywhere}
.admin-main{padding-top:34px;padding-bottom:70px}
.admin-login{max-width:530px;margin:50px auto}
.admin-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.admin-card{padding:25px;margin-bottom:18px}
.admin-card h2{margin-bottom:10px}
.admin-wide{width:100%}
.admin-card summary{cursor:pointer;font-weight:700}
@media(max-width:800px){.hero{padding:50px 0 34px}.checkout-grid{grid-template-columns:1fr}.pay-panel{order:2}.how-it-works{grid-template-columns:1fr;gap:0;margin-top:32px}.how-it-works>div{padding:15px 0}.status-panel{padding:34px 22px}}
@media(max-width:800px){.admin-grid{grid-template-columns:1fr}.account-heading,.admin-heading{flex-direction:column}}
@media(max-width:480px){.container{width:min(100% - 28px,1120px)}.site-header{height:64px}.header-tag{font-size:11px}.plan-panel,.pay-panel{padding:20px}.plan-option{padding:16px}.plan-price{font-size:20px}.status-panel{padding:28px 18px}}