:root{--ink:#08202a;--muted:#5b6d72;--mint:#58dfbf;--lime:#dff26b;--blue:#6ca7ff;--line:rgba(8,32,42,.12);--card:#fff;--soft:#f3f7f5;--shadow:0 24px 70px rgba(21,61,67,.11);font-family:Inter,"SF Pro Display","PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:#f4f7f5;font-size:16px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(circle at 8% 4%,rgba(88,223,191,.14),transparent 22%),radial-gradient(circle at 90% 16%,rgba(223,242,107,.16),transparent 26%),#f4f7f5}button,select,input{font:inherit}.topbar{height:84px;max-width:1500px;margin:auto;display:flex;align-items:center;padding:0 34px;border-bottom:1px solid var(--line);gap:36px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);margin-right:auto}.brand-icon{display:grid;place-items:center;width:46px;height:46px;border-radius:15px;background:linear-gradient(145deg,var(--mint),var(--lime));font-size:24px;box-shadow:0 12px 28px rgba(55,200,163,.24)}.brand strong,.brand small{display:block}.brand strong{font-size:20px}.brand small{color:var(--muted);font-size:14px;margin-top:2px}.topbar nav{display:flex;gap:26px}.topbar nav a{color:var(--ink);font-weight:750;text-decoration:none}.soft-button,.action-grid button,.export-row button{border:1px solid var(--line);background:rgba(255,255,255,.75);border-radius:14px;padding:11px 16px;color:var(--ink);font-weight:750;cursor:pointer}main{max-width:1500px;margin:auto;padding:26px 34px 80px}.hero{min-height:520px;border-radius:42px;overflow:hidden;display:grid;grid-template-columns:1fr 1.05fr;background:linear-gradient(120deg,#54dbbf 0%,#8be6c1 48%,#e4f46c 100%);box-shadow:var(--shadow);position:relative}.hero:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(8,32,42,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(8,32,42,.07) 1px,transparent 1px);background-size:66px 66px;mask-image:linear-gradient(90deg,#000,transparent 65%);pointer-events:none}.hero-art{position:relative;min-height:520px;display:grid;place-items:center}.hero-icon{width:164px;height:164px;border-radius:38px;background:rgba(255,255,255,.7);display:grid;place-items:center;font-size:76px;box-shadow:0 30px 60px rgba(6,75,72,.16);z-index:2;animation:float 5s ease-in-out infinite}.orbit{position:absolute;border:1px solid rgba(8,32,42,.25);border-radius:50%;width:430px;height:250px;transform:rotate(22deg)}.orbit-b{width:340px;height:340px;border-style:dashed;transform:none}.orbit-label{position:absolute;padding:12px 22px;background:rgba(255,255,255,.55);border-radius:999px;font-weight:800;z-index:2}.label-fill{left:12%;top:20%}.label-export{left:18%;bottom:17%}.hero-copy{display:flex;flex-direction:column;justify-content:center;padding:70px 7vw 70px 40px;position:relative;z-index:2}.eyebrow{letter-spacing:.16em;text-transform:uppercase;font-weight:850;font-size:14px;color:#27675e}.hero h1{font-size:clamp(52px,5.5vw,88px);line-height:.98;letter-spacing:-.065em;margin:25px 0}.hero p{font-size:22px;line-height:1.55;font-weight:650;max-width:620px}.hero-badges{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.hero-badges span{padding:11px 15px;border:1px solid rgba(8,32,42,.16);background:rgba(255,255,255,.42);border-radius:999px;font-weight:750}.safety-strip{margin:26px 0;display:flex;gap:18px;align-items:center;padding:24px 30px;background:#092531;color:#eafff8;border-radius:24px}.safety-icon{font-size:30px}.safety-strip strong{font-size:19px}.safety-strip p{margin:7px 0 0;color:#b9d1d0;line-height:1.55}.workspace{display:grid;grid-template-columns:390px 1fr;gap:24px;align-items:start}.control-card,.result-card,.history-card{background:var(--card);border:1px solid var(--line);border-radius:30px;box-shadow:var(--shadow)}.control-card{padding:28px;position:sticky;top:18px}.section-heading h2,.result-head h2{font-size:30px;letter-spacing:-.035em;margin:8px 0}.control-card label{display:grid;gap:8px;margin-top:20px;font-weight:800}.control-card select{width:100%;border:1px solid var(--line);background:var(--soft);padding:15px;border-radius:14px;color:var(--ink)}.primary-button{width:100%;border:0;border-radius:17px;padding:17px;margin-top:24px;background:linear-gradient(110deg,#4bd5c0,#dff26b);font-weight:900;color:var(--ink);cursor:pointer;box-shadow:0 14px 28px rgba(56,200,165,.22)}button{transition:transform .2s,box-shadow .2s}button:hover{transform:translateY(-2px)}.action-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin-top:10px}.action-grid button{font-size:13px}.export-row{display:flex;align-items:center;gap:8px;margin-top:18px;font-weight:800}.export-row span{margin-right:auto}.export-row button{padding:8px 10px}.result-card{padding:30px;min-height:660px}.result-head{display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding-bottom:20px}.result-head p{color:var(--muted);margin:0}.synthetic-badge{height:max-content;border:1px solid #2bb597;color:#177a68;background:#eafff8;padding:10px 13px;border-radius:999px;font-size:12px;font-weight:900;letter-spacing:.08em}.profile-fields{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:22px}.field-row{border:1px solid var(--line);background:#fbfcfb;border-radius:18px;padding:15px;display:grid;grid-template-columns:22px minmax(0,1fr) auto;align-items:center;gap:10px}.field-row.dragging{opacity:.45}.drag{cursor:grab;color:#9aabaa}.field-label{display:block;color:var(--muted);font-size:13px;font-weight:800}.field-value{display:block;font-size:17px;font-weight:800;margin-top:4px;overflow-wrap:anywhere}.field-actions{display:flex;gap:5px}.icon-button{width:35px;height:35px;border:1px solid var(--line);border-radius:11px;background:#fff;cursor:pointer}.icon-button.active{background:#dff8ef;border-color:#31b99b}.payment-panel{margin-top:22px;border-radius:24px;background:linear-gradient(135deg,#07212c,#174d51);color:white;padding:26px;position:relative;overflow:hidden}.payment-panel:after{content:"TEST ONLY";position:absolute;right:20px;top:18px;font-size:40px;font-weight:950;color:rgba(255,255,255,.07)}.payment-panel h3{font-size:25px;margin:8px 0}.payment-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:18px}.payment-grid div{background:rgba(255,255,255,.08);padding:14px;border-radius:14px}.payment-grid small,.payment-grid strong{display:block}.payment-grid small{color:#a8d3ce;margin-bottom:5px}.table-wrap{overflow:auto;margin-top:22px;border:1px solid var(--line);border-radius:18px}table{border-collapse:collapse;min-width:950px;width:100%}th,td{padding:13px 15px;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}th{background:#eaf7f3;font-size:13px}td{font-size:14px}.history-card{padding:30px;margin-top:24px}.section-heading.inline{display:flex;justify-content:space-between;align-items:center}.history-list{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.history-item{border:1px solid var(--line);background:#fbfcfb;border-radius:16px;padding:15px;cursor:pointer}.history-item strong,.history-item span{display:block}.history-item span{color:var(--muted);font-size:13px;margin-top:5px}.custom-wrap{margin-top:18px}.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:10px}.check-grid label{display:flex;margin:0;gap:7px;align-items:center;font-size:13px}.toast{position:fixed;left:50%;bottom:30px;transform:translate(-50%,20px);opacity:0;background:#08202a;color:#fff;padding:12px 18px;border-radius:999px;font-weight:800;transition:.25s;pointer-events:none;z-index:9}.toast.show{opacity:1;transform:translate(-50%,0)}footer{max-width:1500px;margin:0 auto 40px;padding:24px 34px;border-top:1px solid var(--line);display:flex;justify-content:space-between;color:var(--muted)}@keyframes float{50%{transform:translateY(-12px) rotate(2deg)}}@media(max-width:980px){.hero{grid-template-columns:1fr}.hero-art{min-height:320px}.hero-copy{padding:40px}.workspace{grid-template-columns:1fr}.control-card{position:static}.profile-fields{grid-template-columns:1fr}.history-list{grid-template-columns:1fr 1fr}.topbar nav{display:none}}@media(max-width:620px){main{padding:16px}.topbar{padding:0 18px}.hero h1{font-size:48px}.hero-copy{padding:32px 24px}.result-head{display:block}.synthetic-badge{display:inline-block;margin-top:15px}.payment-grid{grid-template-columns:1fr}.history-list{grid-template-columns:1fr}footer{display:grid;gap:8px}.action-grid{grid-template-columns:1fr}}
:root{scroll-padding-top:90px}
/* Compact product introduction: the workspace is now visible much sooner. */
@media(min-width:981px){
  .hero{min-height:230px;grid-template-columns:38% 62%;border-radius:32px}
  .hero-art{min-height:230px}
  .hero-icon{width:94px;height:94px;border-radius:25px;font-size:46px}
  .orbit{width:275px;height:125px}
  .orbit-b{width:190px;height:190px}
  .orbit-label{padding:7px 13px;font-size:13px}
  .label-fill{left:10%;top:20%}.label-export{left:15%;bottom:16%}
  .hero-copy{padding:24px 50px 24px 22px}
  .hero h1{font-size:clamp(38px,4vw,58px);margin:10px 0 8px;line-height:1.02}
  .hero p{font-size:18px;line-height:1.35;margin:4px 0}
  .hero-badges{margin-top:10px}.hero-badges span{padding:7px 11px;font-size:13px}
}
.payment-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;position:relative;z-index:2}
.payment-actions{display:flex;gap:8px}.payment-actions button{border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.09);color:#fff;border-radius:12px;padding:10px 13px;font-weight:800;cursor:pointer}
.topbar nav a{padding:10px 4px;position:relative}.topbar nav a:after{content:"";position:absolute;left:4px;right:4px;bottom:3px;height:2px;background:linear-gradient(90deg,var(--mint),var(--lime));transform:scaleX(0);transition:transform .2s}.topbar nav a:hover:after{transform:scaleX(1)}
.payment-panel.demo-invalid{background:linear-gradient(135deg,#17243a,#243b62)}.payment-panel.demo-invalid:after{content:"INVALID";color:rgba(255,210,94,.09)}
.payment-panel.refreshing{animation:paymentRefresh .42s ease}@keyframes paymentRefresh{0%{transform:scale(.99);filter:brightness(1)}45%{transform:scale(1.006);filter:brightness(1.28)}100%{transform:scale(1);filter:brightness(1)}}
.control-hint{display:block;margin-top:3px;color:var(--muted);font-size:12px;line-height:1.45;font-weight:650}.control-hint.mock{color:#a35d00}
.payment-panel.official-sandbox{border:1px solid rgba(87,232,191,.38);box-shadow:inset 0 0 45px rgba(75,213,192,.06)}
.payment-mode-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:7px}.mode-badge{display:inline-flex;align-items:center;border-radius:999px;padding:7px 11px;font-size:11px;font-weight:950;letter-spacing:.08em}.mode-badge.official{color:#062c23;background:#74e8c6}.mode-badge.mock{color:#402b00;background:#ffd475}.gateway-warning{font-size:12px;font-weight:750;color:#c0d7d5}.payment-panel.demo-invalid .gateway-warning{color:#ffe0a3}.payment-panel>p{position:relative;z-index:2;line-height:1.55;color:#c8dedd}.payment-panel.demo-invalid>p{color:#d6deef}.payment-number-cell{grid-column:span 2;border:1px solid rgba(255,255,255,.13)}.payment-number-cell strong{font-size:22px;letter-spacing:.065em;font-variant-numeric:tabular-nums}
@media(max-width:620px){.payment-number-cell{grid-column:span 1}.payment-head{display:grid}.payment-actions{margin-top:6px}}
.seo-content{max-width:1500px;margin:28px auto 0;padding:38px;border:1px solid var(--line);border-radius:30px;background:rgba(255,255,255,.82);box-shadow:var(--shadow)}.back-tools-link{display:inline-flex;margin-bottom:24px;color:#168f75;font-weight:850;text-decoration:none}.back-tools-link:hover{text-decoration:underline}.seo-content h2{margin:0 0 13px;color:var(--ink);font-size:30px;letter-spacing:-.035em}.seo-content p,.seo-content li{color:var(--muted);font-size:15px;line-height:1.75}.seo-content ul{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:20px 0 34px;padding:0;list-style:none}.seo-content li{padding:13px 15px;border:1px solid var(--line);border-radius:14px;background:var(--soft)}.seo-faq details{padding:16px 0;border-top:1px solid var(--line)}.seo-faq summary{cursor:pointer;color:var(--ink);font-weight:850}.seo-faq details p{margin:8px 0 0}.seo-lang-zh{display:none}html[lang="zh-CN"] .seo-lang-en{display:none}html[lang="zh-CN"] .seo-lang-zh{display:block}html[lang="en"] .seo-lang-en{display:block}html[lang="en"] .seo-lang-zh{display:none}@media(max-width:760px){.seo-content{margin-inline:14px;padding:26px}.seo-content ul{grid-template-columns:1fr 1fr}}