.checkout-backdrop{position:fixed;inset:0;z-index:70;overflow:auto;background:#f5f5f7;color:#16161b;animation:fade-in 180ms var(--ease)}
.checkout-shell{min-height:100vh;display:grid;grid-template-columns:minmax(360px,.92fr) minmax(460px,1.08fr);max-width:1180px;margin:0 auto;background:#fff;box-shadow:0 0 70px rgba(0,0,0,.08)}
.checkout-summary{padding:48px clamp(28px,6vw,76px);background:#f7f7f9;border-right:1px solid #e4e4e8}
.checkout-brand{display:flex;align-items:center;gap:12px;color:#111116;font-size:19px;font-weight:760;letter-spacing:-.02em}.checkout-brand .brand-mark{width:30px;height:30px;color:#fff}
.checkout-back{display:inline-flex;align-items:center;gap:8px;margin-bottom:58px;border:0;background:transparent;color:#666674;padding:0;font-size:14px}.checkout-back:hover{background:transparent;color:#111116;transform:none}
.checkout-kicker{margin:0 0 18px;color:#777783;font-size:13px}.checkout-summary h2{max-width:430px;margin:0;font-size:clamp(30px,4vw,48px);line-height:1.05;letter-spacing:-.055em;font-weight:650}.checkout-price{display:flex;align-items:baseline;gap:10px;margin:22px 0 56px;color:#111116}.checkout-price strong{font-size:clamp(42px,5vw,66px);letter-spacing:-.065em;line-height:1}.checkout-price span{font-size:16px;color:#666674}
.checkout-line{display:flex;justify-content:space-between;gap:20px;padding:20px 0;border-top:1px solid #dedee3}.checkout-line strong{font-size:16px}.checkout-line span{display:block;margin-top:5px;color:#777783;font-size:13px}.checkout-line .checkout-line-value{align-self:center;color:#202027;font-size:16px;font-weight:650;white-space:nowrap}
.checkout-promo{margin:20px 0 30px;padding:13px 18px;border:0;border-radius:12px;background:#e9e9ed;color:#32323a;font-weight:650}.checkout-promo:hover{background:#dedee5;transform:none}
.checkout-tax{display:flex;justify-content:space-between;gap:18px;padding:18px 0;border-bottom:1px solid #dedee3;color:#777783;font-size:13px}.checkout-total{display:flex;justify-content:space-between;gap:20px;padding-top:28px;font-size:18px;font-weight:700}.checkout-total strong{font-size:22px}
.checkout-panel{padding:48px clamp(28px,6vw,76px);background:#fff}.checkout-panel-inner{max-width:540px;margin:0 auto}.checkout-quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.checkout-quick{height:56px;border-radius:10px;border:1px solid #111116;background:#111116;color:#fff;font-size:19px}.checkout-quick.link{background:#06c875;border-color:#06c875}.checkout-quick:disabled{background:#f0f0f2;border-color:#dedee3;color:#9a9aa4;cursor:not-allowed;opacity:1}.checkout-quick:disabled:hover{transform:none}
.checkout-or{display:flex;align-items:center;gap:14px;margin:28px 0;color:#777783}.checkout-or:before,.checkout-or:after{content:"";height:1px;flex:1;background:#dedee3}.checkout-section-title{margin:0 0 16px;font-size:19px;letter-spacing:-.02em}.checkout-field{display:flex;align-items:center;min-height:66px;margin-bottom:28px;border:1px solid #dedee3;border-radius:10px;background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.04)}.checkout-field label{width:112px;padding:0 16px;color:#44444d;font-size:14px;font-weight:600}.checkout-field input{min-width:0;flex:1;border:0;background:transparent;color:#202027;padding:18px 16px;font-size:15px;outline:0}.checkout-methods{overflow:hidden;border:1px solid #dedee3;border-radius:10px;background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.04)}.checkout-method{position:relative;display:flex;align-items:center;gap:14px;width:100%;min-height:74px;border:0;border-bottom:1px solid #e8e8ec;border-radius:0;background:#fff;color:#28282f;padding:14px 18px;text-align:left}.checkout-method:last-child{border-bottom:0}.checkout-method:hover{background:#fafafd;transform:none}.checkout-method:disabled{color:#9b9ba5;cursor:not-allowed;opacity:1}.checkout-method:disabled:hover{background:#fff}.checkout-method.selected{background:#faf8ff}.checkout-radio{width:18px;height:18px;border:2px solid #b5b5bf;border-radius:50%;flex:0 0 auto}.checkout-method.selected .checkout-radio{border:5px solid #7c3aed}.checkout-method-icon{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:#f0f0f3;color:#202027;font-size:14px;font-weight:800}.checkout-method.alipay .checkout-method-icon{background:#e9f5ff;color:#1677ff}.checkout-method.google .checkout-method-icon{background:#eef5ff;color:#4285f4}.checkout-method-copy{display:grid;gap:2px}.checkout-method-copy strong{font-size:15px}.checkout-method-copy span{color:#858590;font-size:12px}.checkout-method-badge{margin-left:auto;border-radius:999px;background:#f0f0f3;padding:4px 8px;color:#858590;font-size:11px;white-space:nowrap}.checkout-method.selected .checkout-method-badge{background:#eee7ff;color:#6d28d9}.checkout-amounts{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0 22px}.checkout-tier{display:grid;gap:2px;min-width:82px;border:1px solid #dedee3;border-radius:9px;background:#fff;color:#3b3b44;padding:10px 12px;text-align:left}.checkout-tier span{color:#858590;font-size:11px;font-weight:500}.checkout-tier.selected{border-color:#7c3aed;background:#faf8ff;box-shadow:0 0 0 2px rgba(124,58,237,.1)}.checkout-custom{display:flex;align-items:center;gap:10px;margin-bottom:20px;color:#777783;font-size:13px}.checkout-custom input{width:110px;border:1px solid #dedee3;border-radius:8px;padding:9px 10px;background:#fff;color:#202027}.checkout-save{display:flex;align-items:flex-start;gap:10px;margin:22px 0;color:#777783;font-size:12px;line-height:1.5}.checkout-save input{margin-top:3px;accent-color:#7c3aed}.checkout-submit{width:100%;min-height:56px;border-radius:10px;background:#111116;border-color:#111116;color:#fff;font-size:16px}.checkout-submit:hover{background:#2a2a32;box-shadow:0 10px 24px rgba(0,0,0,.12)}.checkout-footnote{margin:14px 0 0;color:#9a9aa4;font-size:11px;line-height:1.6;text-align:center}.checkout-panel .checkout-brand{display:none}
@media(max-width:820px){.checkout-shell{display:block;max-width:620px}.checkout-summary{border-right:0;border-bottom:1px solid #e4e4e8;padding:28px 24px}.checkout-panel{padding:28px 24px}.checkout-back{margin-bottom:30px}.checkout-price{margin-bottom:34px}.checkout-panel .checkout-brand{display:flex;margin-bottom:30px}.checkout-summary .checkout-brand{display:none}}
@media(max-width:480px){.checkout-quick-grid{grid-template-columns:1fr}.checkout-field{display:block;padding:10px 0}.checkout-field label{display:block;width:auto;padding:0 16px;font-size:12px}.checkout-field input{display:block;width:100%;padding-top:8px}.checkout-tier{min-width:calc(50% - 4px)}}