.buy-header *,.buy-main-container *,.form-container *,.order-payment-sidebar *{box-sizing:border-box}
.buy-main-container{max-width:1200px;margin:0 auto;padding:20px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","微软雅黑",sans-serif}
.buy-header{background-image:url("/images/buy_banner.jpg");background-image:image-set(url("/images/buy_banner.avif") type("image/avif"),url("/images/buy_banner.webp") type("image/webp"));background-repeat:no-repeat;background-position:center;background-size:cover;border-radius:12px;padding:50px 30px;margin:0 auto 30px;max-width:1200px;color:#fff;box-shadow:0 4px 20px rgba(102,126,234,.3)}
.buy-header-content{display:flex;justify-content:space-around}
.buy-header-title{display:flex;justify-content:center;gap:10px}
.buy-header .logo{height:50px;margin-bottom:15px}
.buy-header h1{font-size:20px;font-weight:400;line-height:50px;color:#fff}
.buy-steps{display:flex;justify-content:center;align-items:center;gap:10px;max-width:500px}
.step{display:flex;align-items:center;gap:8px;padding:8px 16px;background:rgba(255,255,255,.2);border-radius:20px;transition:all .3s;text-decoration:none;color:#fff}
.step.active{background:rgba(6,10,188,.3);box-shadow:0 2px 10px rgba(0,0,0,.1)}
.step.completed{background:rgba(16,185,129,.2)}
.step.clickable{cursor:pointer}
.step.clickable:hover{background:rgba(16,185,129,.3);transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.15)}
.step-number{width:24px;height:24px;background:rgba(255,255,255,.3);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600}
.step.active .step-number{background:#fff;color:#667eea}
.step.completed .step-number{background:#10b981;color:#fff}
.step-text{font-size:14px;font-weight:500}
.step-divider{width:30px;height:2px;background:rgba(255,255,255,.3)}
.buy-content{display:grid;grid-template-columns:2fr 1fr;gap:30px;margin-bottom:30px}
.version-section{grid-column:1}
.section-title{font-size:20px;font-weight:600;color:#2d3748;margin:0 0 20px 0;padding-bottom:12px;border-bottom:2px solid #e2e8f0}
.version-cards{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:30px}
.version-card{background:#fff;border:2px solid #e2e8f0;border-radius:12px;padding:24px;cursor:pointer;transition:all .3s;position:relative;overflow:hidden}
.version-card:hover{border-color:#667eea;box-shadow:0 4px 12px rgba(102,126,234,.15);transform:translateY(-2px)}
.version-card.selected{border-color:#667eea;background:linear-gradient(135deg,#f6f8ff 0,#f0f4ff 100%);box-shadow:0 4px 16px rgba(102,126,234,.2)}
.version-card.recommended{border-color:#f59e0b}
.version-card.recommended.selected{border-color:#f59e0b;background:linear-gradient(135deg,#fffbeb 0,#fef3c7 100%)}
.buy-suggest{display:inline-flex;align-items:center;justify-content:center;background-color:#f60;color:#fff;font-size:12px;font-weight:700;font-family:"Microsoft Yahei",sans-serif;padding:3px 8px;border-radius:4px 4px 4px 0;line-height:1.2;position:absolute;top:10px;left:100px}
.buy-suggest::before{content:"";position:absolute;left:0;bottom:0;transform:translateX(-100%);width:0;height:0;border-style:solid;border-width:0 0 5px 6px;border-color:transparent transparent #f60 transparent}
.recommend-badge{position:absolute;top:-10px;right:20px;background:linear-gradient(135deg,#f59e0b 0,#d97706 100%);color:#fff;padding:4px 12px;border-radius:12px;font-size:12px;font-weight:600}
.version-header{margin-bottom:16px}
.version-header h3{font-size:22px;font-weight:600;color:#1a202c;margin:0 0 12px 0}
.version-price{display:flex;align-items:baseline;gap:4px}
.price-from{font-size:16px;color:#718096}
.price-amount{font-size:32px;font-weight:700;color:#667eea}
.version-card.recommended .price-amount{color:#f59e0b}
.price-unit{font-size:14px;color:#718096}
.version-desc{color:#4a5568;font-size:14px;line-height:1.6;margin-bottom:16px;min-height:42px}
.version-features{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.feature-item{font-size:12px;color:#10b981;background:#d1fae5;padding:4px 10px;border-radius:12px;font-weight:500}
.version-card.selected:after{content:'✓ 已选择';position:absolute;bottom:0;right:0;background:#667eea;color:#fff;padding:4px 12px;border-top-left-radius:12px;font-size:12px;font-weight:600}
.version-card.recommended.selected:after{background:#f59e0b}
.lock-addon-section{margin-top:20px;padding:24px;background:#f7fafc;border-radius:12px;border:2px dashed #cbd5e0}
.lock-checkbox-wrapper{margin-bottom:20px}
.lock-checkbox-label{display:flex;align-items:center;gap:12px;cursor:pointer;font-size:16px;font-weight:600;color:#2d3748;padding:16px;background:#fff;border-radius:8px;border:2px solid #e2e8f0;transition:all .3s}
.lock-checkbox-label:hover{border-color:#667eea;background:#f6f8ff}
.lock-checkbox-label input[type=checkbox]{width:20px;height:20px;cursor:pointer;accent-color:#667eea}
.checkbox-text{flex:1}
.lock-options-wrapper{margin-top:16px}
.lock-options{display:grid;grid-template-columns:1fr;gap:12px}
.lock-option{background:#fff;border:2px solid #e2e8f0;border-radius:8px;padding:16px;display:flex;align-items:center;gap:12px;cursor:pointer;transition:all .3s}
.lock-option:hover{border-color:#667eea;box-shadow:0 2px 8px rgba(102,126,234,.1)}
.lock-option.selected{border-color:#667eea;background:linear-gradient(135deg,#f6f8ff 0,#f0f4ff 100%);box-shadow:0 2px 12px rgba(102,126,234,.15)}
.lock-radio input[type=radio]{width:20px;height:20px;cursor:pointer}
.lock-info{flex:1}
.lock-name{font-size:16px;font-weight:600;color:#2d3748;margin-bottom:4px}
.lock-desc{font-size:13px;color:#718096}
.lock-price{text-align:right;display:flex;align-items:baseline;gap:4px}
.price-label{font-size:14px;color:#718096}
.price-value{font-size:18px;font-weight:700;color:#ec0a0a}
.order-summary{background:#fff;border:2px solid #e2e8f0;border-radius:12px;padding:24px;position:sticky;top:20px;box-shadow:0 4px 12px rgba(0,0,0,.05)}
.order-summary h3{font-size:18px;font-weight:600;color:#2d3748;margin:0 0 20px 0}
.summary-item{display:flex;justify-content:space-between;align-items:center;padding:12px 0;font-size:14px;color:#4a5568}
.summary-divider{height:1px;background:#e2e8f0;margin:16px 0}
.summary-total{display:flex;justify-content:space-between;align-items:center;padding:16px 0;font-size:16px;font-weight:600;color:#2d3748}
.total-price{font-size:24px;font-weight:700;color:#ec0a0a}
.quantity-selector{flex-direction:column;align-items:stretch;gap:12px}
.quantity-selector label{font-weight:600}
.quantity-control{display:flex;align-items:center;gap:12px;justify-content:center}
.qty-btn{width:36px;height:36px;border:2px solid #e2e8f0;background:#fff;border-radius:8px;font-size:18px;font-weight:600;color:#4a5568;cursor:pointer;transition:all .3s}
.qty-btn:hover{border-color:#667eea;color:#667eea;background:#f6f8ff}
#productNum{width:60px;height:36px;text-align:center;border:2px solid #e2e8f0;border-radius:8px;font-size:16px;font-weight:600;color:#2d3748}
#productNum::-webkit-inner-spin-button,#productNum::-webkit-outer-spin-button{-webkit-appearance:none;appearance:none;margin:0}
#productNum[type=number]{-moz-appearance:textfield;appearance:textfield}
.btn-submit{width:100%;padding:16px;background:linear-gradient(135deg,#ff7246 0,#f07512 100%);color:#fff;border:none;border-radius:10px;font-size:18px;font-weight:600;cursor:pointer;margin-top:20px;transition:all .3s;box-shadow:0 4px 12px rgba(102,126,234,.3)}
.btn-submit:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(102,126,234,.4)}
.info-section{background:#fff;border-radius:12px;padding:30px;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.info-content h3{font-size:20px;font-weight:600;color:#2d3748;margin:0 0 20px 0}
.info-list{list-style:none;padding:0;margin:0 0 30px 0}
.info-list li{padding:12px 0 12px 28px;position:relative;color:#4a5568;font-size:14px;line-height:1.6}
.info-list li:before{content:"✓";position:absolute;left:0;color:#10b981;font-weight:700;font-size:16px}
.info-links{display:flex;flex-wrap:wrap;gap:16px}
.info-links a{padding:10px 20px;background:#f7fafc;color:#667eea;text-decoration:none;border-radius:8px;font-size:14px;font-weight:500;transition:all .3s;border:1px solid #e2e8f0}
.info-links a:hover{background:#667eea;color:#fff;border-color:#667eea;transform:translateY(-1px)}
.faq-section{background:#fff;border-radius:12px;padding:30px;margin-bottom:30px;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.faq-section h2{font-size:20px;font-weight:600;color:#2d3748;margin:0 0 24px 0;padding-bottom:12px;border-bottom:2px solid #e2e8f0}
.faq-item{margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid #e2e8f0}
.faq-item:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}
.faq-item h3{font-size:16px;font-weight:600;color:#2d3748;margin:0 0 12px 0}
.faq-item p{font-size:14px;color:#4a5568;line-height:1.8;margin:8px 0}
.faq-item a{color:#667eea;text-decoration:none;font-weight:500}
.faq-item a:hover{text-decoration:underline}
.comments-section{background:#fff;border-radius:12px;padding:30px;margin-bottom:30px;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.comments-section h2{font-size:20px;font-weight:600;color:#2d3748;margin:0 0 36px 0;padding-bottom:12px;border-bottom:2px solid #e2e8f0}
.comments-slider{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px;margin-bottom:20px}
.comment-item{display:flex;flex-direction:column;height:100%}
.comment-text{font-size:14px;color:#4a5568;line-height:1.6;margin:0}
.comment-user{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:20px;padding-left:calc(10% - 26px)}
.comment-bubble{width:100%;background-color:#f7fafc;border-radius:16px;position:relative;padding:20px;box-sizing:border-box;border:1px solid #e6e9f1;flex:1;display:flex;align-items:flex-start}
.comment-bubble::before{content:"";position:absolute;bottom:-11px;left:10%;transform:translateX(-50%);width:0;height:0;border-left:7px solid transparent;border-right:7px solid transparent;border-top:11px solid #e6e9f1;z-index:1}
.comment-bubble::after{content:"";position:absolute;bottom:-10px;left:10%;transform:translateX(-50%);width:0;height:0;border-left:6px solid transparent;border-right:6px solid transparent;border-top:10px solid #f7fafc;z-index:2}
.user-avatar{display:flex;align-items:center;justify-content:center;color:#fff;font-weight:600}
.user-info{display:flex;flex-direction:column}
.user-info .user-name{font-size:14px;font-weight:600;color:#2d3748}
.user-info .stars{font-size:17px;color:#ffc107;letter-spacing:1px;font-weight:800;-webkit-text-stroke:1px #FFC107;text-stroke:1px #FFC107}
.comments-more{text-align:center;font-size:14px;color:#718096;margin:0}
.comments-more a{color:#667eea;text-decoration:none;font-weight:600}
.comments-more a:hover{text-decoration:underline}
.order-info-section{background:#fff;border-radius:12px;padding:30px;margin-bottom:30px;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.order-info-section h2{font-size:20px;font-weight:600;color:#2d3748;margin:0 0 20px 0;padding-bottom:12px;border-bottom:2px solid #e2e8f0}
.order-details{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.detail-item{display:flex;justify-content:space-between;align-items:center;padding:16px;border-bottom:1px solid #e2e8f0}
.detail-item.total{border:none}
.detail-label{font-size:14px;color:#718096;font-weight:500}
.detail-value{font-size:16px;color:#2d3748;font-weight:600}
.detail-value.price{font-size:24px;color:#667eea}
.form-section{background:#fff;border-radius:12px;padding:30px;margin-bottom:30px;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.form-section h2{font-size:20px;font-weight:600;color:#2d3748;margin:0 0 20px 0;padding-bottom:12px;border-bottom:2px solid #e2e8f0}
.form-notice{background:#fffbeb;border-left:4px solid #f59e0b;padding:16px;margin-bottom:30px;border-radius:4px;color:#92400e;font-size:14px;line-height:1.6}
.required{color:#ef4444;font-weight:700}
.form-group{margin-bottom:24px}
.form-label{display:block;font-size:15px;font-weight:600;color:#2d3748;margin-bottom:8px}
.form-input,.form-select,.form-textarea{width:100%;padding:12px 16px;border:2px solid #e2e8f0;border-radius:8px;font-size:15px;color:#2d3748;transition:all .3s;font-family:inherit}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:0;border-color:#667eea;box-shadow:0 0 0 3px rgba(102,126,234,.1)}
.form-input::placeholder,.form-textarea::placeholder{color:#a0aec0}
.form-textarea{resize:vertical;min-height:100px}
.form-hint{display:block;margin-top:6px;font-size:13px;color:#718096}
.form-group-inline .form-inline-inputs{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.subsection-title{font-size:18px;font-weight:600;color:#4a5568;margin:30px 0 20px 0;padding-bottom:10px;border-bottom:1px solid #e2e8f0}
.shipping-section{margin-top:30px;padding-top:30px;border-top:2px dashed #e2e8f0}
.shipping-options{display:flex;flex-direction:column;gap:20px}
.shipping-group{background:#f7fafc;padding:16px;border-radius:8px;border:1px solid #e2e8f0}
.shipping-group-title{font-size:14px;font-weight:600;color:#4a5568;margin-bottom:12px}
.shipping-option{display:flex;align-items:center;padding:12px;background:#fff;border:2px solid #e2e8f0;border-radius:6px;margin-bottom:8px;cursor:pointer;transition:all .3s}
.shipping-option:last-child{margin-bottom:0}
.shipping-option:hover{border-color:#667eea;background:#f6f8ff}
.shipping-option input[type=radio]{width:18px;height:18px;margin-right:12px;cursor:pointer}
.shipping-option input[type=radio]:checked+.option-text{color:#667eea;font-weight:600}
.option-text{flex:1;font-size:14px;color:#2d3748}
.option-price{font-size:14px;font-weight:600;color:#667eea}
.payment-section{background:#fff;border-radius:12px;padding:30px;margin-bottom:30px;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.payment-section h2{font-size:20px;font-weight:600;color:#2d3748;margin:0 0 20px 0;padding-bottom:12px;border-bottom:2px solid #e2e8f0}
.payment-total{display:flex;justify-content:space-between;align-items:center;padding:20px;background:linear-gradient(135deg,#f6f8ff 0,#f0f4ff 100%);border-radius:10px;margin-bottom:30px;border:2px solid #667eea}
.payment-total>span:first-child{font-size:16px;color:#4a5568;font-weight:500}
.payment-amount{font-size:32px;font-weight:700;color:#667eea}
.payment-methods{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:30px}
.payment-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:24px;background:#fff;border:2px solid #e2e8f0;border-radius:12px;cursor:pointer;transition:all .3s;font-size:16px;font-weight:600}
.payment-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.1)}
.payment-btn.wechat{border-color:#07c160;color:#07c160}
.payment-btn.wechat:hover{background:#07c160;color:#fff}
.payment-btn.alipay{border-color:#1677ff;color:#1677ff}
.payment-btn.alipay:hover{background:#1677ff;color:#fff}
.payment-btn.unionpay{border-color:#e4393c;color:#e4393c}
.payment-btn.unionpay:hover{background:#e4393c;color:#fff}
.payment-icon{font-size:32px}
.payment-name{font-size:16px;letter-spacing:1px}
.payment-btn-more{padding:16px 24px;background:#f7fafc;border:2px dashed #cbd5e0;border-radius:8px;color:#667eea;font-size:14px;font-weight:600;cursor:pointer;transition:all .3s}
.payment-btn-more:hover{background:#f6f8ff;border-color:#667eea}
.payment-notice{background:#f7fafc;padding:20px;border-radius:8px;border-left:4px solid #667eea}
.payment-notice p{margin:0;padding:8px 0;color:#4a5568;font-size:14px;line-height:1.6}
.payment-notice p:first-child{padding-top:0}
.payment-notice p:last-child{padding-bottom:0}
.auto-mail-list{position:absolute;background:#fff;border:2px solid #667eea;border-top:none;border-radius:0 0 8px 8px;box-shadow:0 4px 12px rgba(0,0,0,.1);z-index:1000;max-height:200px;overflow-y:auto}
.auto-mail-list li{padding:10px 16px;cursor:pointer;transition:background .2s}
.auto-mail-list li.active,.auto-mail-list li:hover{background:#f6f8ff;color:#667eea}
@keyframes slideIn{
from{opacity:0;transform:translateY(20px)}
to{opacity:1;transform:translateY(0)}
}
.buy-section,.order-summary{animation:slideIn .5s ease-out}
.form-container{max-width:700px}
.order-payment-sidebar{position:sticky;top:20px;width:350px;flex-shrink:0;max-height:calc(100vh - 40px);overflow-y:auto}
.buy-form{display:flex;margin-bottom:40px;justify-content:space-between}
.buy-form .form-container{flex:1}
.shipping-info-display{padding:12px 16px;background:#f0f9ff;border:2px solid #3b82f6;border-radius:8px;color:#1e40af;font-size:14px;font-weight:600}
.address-input-wrapper{display:flex;align-items:center;gap:8px}
.address-input-wrapper #AddrCity{flex-shrink:0;color:#4a5568;font-size:14px;font-weight:500;white-space:nowrap}
.address-input-wrapper .form-input{flex:1}
.sidebar-section{background:#fff;border-radius:12px;padding:24px;margin-bottom:20px;box-shadow:0 2px 12px rgba(0,0,0,.08);border:1px solid #e2e8f0}
.sidebar-section h3{font-size:18px;font-weight:600;color:#2d3748;margin:0 0 16px 0;padding-bottom:12px;border-bottom:2px solid #e2e8f0}
.sidebar-section .order-details{display:flex;flex-direction:column;gap:12px}
.sidebar-section .detail-item{display:flex;justify-content:space-between;align-items:center;padding:8px 0}
.sidebar-section .detail-item.total{padding-top:16px;margin-top:8px}
.sidebar-section .detail-label{font-size:14px;color:#4a5568}
.sidebar-section .detail-value.price{font-size:24px;color:#e4393c;font-weight:700}
.sidebar-section .payment-methods{display:flex;flex-direction:column;gap:12px}
.sidebar-section .payment-btn .payment-name:before{width:22px;height:22px;display:inline-block;padding-right:10px;background-repeat:no-repeat;background-position:center;background-size:contain;content:'';margin-bottom:-6px}
.sidebar-section .payment-btn{width:100%;padding:16px;border:2px solid #e2e8f0;border-radius:8px;background:#fff;cursor:pointer;transition:all .3s;font-size:16px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:8px}
.sidebar-section .payment-btn:hover{border-color:#667eea;background:#f6f8ff;transform:translateY(-2px);box-shadow:0 4px 12px rgba(102,126,234,.15)}
.sidebar-section .payment-btn.wechat{color:#07c160}
.sidebar-section .payment-btn.wechat:hover{border-color:#07c160;background:#f0fdf4}
.sidebar-section .payment-btn.alipay{color:#1677ff}
.sidebar-section .payment-btn.alipay:hover{border-color:#1677ff;background:#f0f9ff}
.sidebar-section .payment-btn.unionpay{color:#e4393c}
.sidebar-section .payment-btn.unionpay:hover{border-color:#e4393c;background:#fef2f2}
.sidebar-section .payment-btn-more{width:100%;padding:12px;background:0 0;border:1px dashed #cbd5e0;border-radius:8px;color:#667eea;font-size:14px;cursor:pointer;transition:all .3s}
.sidebar-section .payment-btn.wechat .payment-name:before{background-image:url("/img/icon_wechat.png")}
.sidebar-section .payment-btn.alipay .payment-name:before{background-image:url("/img/icon_alipay.png")}
.sidebar-section .payment-btn.unionpay .payment-name:before{background-image:url("/img/icon_chinapay.png")}
.sidebar-section .payment-btn-more:hover{border-color:#667eea;background:#f6f8ff}
.sidebar-section .payment-notice{margin-top:16px;padding:12px;background:#f7fafc;border-radius:8px;border-left:3px solid #667eea}
.sidebar-section .payment-notice p{margin:0;font-size:12px;color:#4a5568;line-height:1.6}
.sidebar-section .payment-notice p+p{margin-top:8px}
@media (max-width:1024px){
.buy-content{grid-template-columns:1fr}
.version-section{grid-column:1}
.order-summary{position:static}
.lock-options{grid-template-columns:1fr}
.form-container{margin-right:0;max-width:100%}
.order-payment-sidebar{position:static;width:100%;margin-top:20px}
.buy-form{flex-direction:column}
}
@media (max-width:768px){
.buy-main-container{padding:15px}
.buy-header{padding:30px 20px}
.buy-header h1{font-size:24px}
.buy-steps{flex-direction:column;gap:8px}
.step-divider{width:2px;height:20px}
.version-cards{grid-template-columns:1fr}
.lock-addon-section{padding:16px}
.lock-checkbox-label{font-size:14px;padding:12px}
.lock-option{padding:12px}
.info-links{flex-direction:column}
.info-links a{text-align:center}
.comments-slider{grid-template-columns:1fr}
.comments-section,.faq-section,.info-section{padding:20px}
.order-details{grid-template-columns:1fr}
.form-section,.order-info-section,.payment-section{padding:20px}
.form-group-inline .form-inline-inputs{grid-template-columns:1fr}
.payment-methods{grid-template-columns:1fr}
.payment-amount{font-size:24px}
.detail-value.price{font-size:20px}
.sidebar-section{padding:20px}
.sidebar-section h3{font-size:16px}
.sidebar-section .payment-btn{padding:14px;font-size:15px}
}
@media (max-width:480px){
.buy-header h1{font-size:20px}
.buy-header .logo{display:none}
.step-text{font-size:12px}
.section-title{font-size:18px}
.version-header h3{font-size:20px}
.price-amount{font-size:28px}
.btn-submit{font-size:16px;padding:14px}
.lock-checkbox-label{font-size:13px}
.feature-item{font-size:11px}
.form-section h2,.order-info-section h2,.payment-section h2{font-size:18px}
.form-input,.form-select,.form-textarea{font-size:14px;padding:10px 12px}
.payment-btn{padding:20px}
.payment-icon{font-size:28px}
.payment-name{font-size:14px}
.sidebar-section{padding:16px}
.sidebar-section h3{font-size:16px}
.sidebar-section .detail-value.price{font-size:20px}
.sidebar-section .payment-btn{padding:12px;font-size:14px}
}