*{margin:0;padding:0;box-sizing:border-box;}
html,body{height:100%;}
body{
    font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue",Arial,sans-serif;
    background:#f5f7f9;
    color:#333;
    max-width:640px;
    margin:0 auto;
}
a{text-decoration:none;color:inherit;}
img{max-width:100%;display:block;}
:root{
    --wx-green:#07c160;
    --wx-green-dark:#059a4c;
    --wx-bg:#f5f7f9;
    --wx-text-light:#888;
    --card-radius:14px;
    --transition-fast:.18s ease-out;
    --shadow-soft:0 4px 10px rgba(0,0,0,.04);
}
header{
    background:linear-gradient(135deg,#07c160,#02b26d);
    color:#fff;
    padding:14px 16px 18px;
    position:sticky;
    top:0;
    z-index:20;
    border-radius:0 0 18px 18px;
}
.top-bar{
    display:flex;
    align-items:center;
    justify-content:space-between;
    margin-bottom:10px;
}
.logo-wrap{
    display:flex;
    align-items:center;
    gap:10px;
}
.logo-icon{
    width:48px;height:48px;
    border-radius:16px;
    background:#fff;
    display:flex;
    align-items:center;
    justify-content:center;
    box-shadow:0 4px 10px rgba(0,0,0,.12);
    overflow:hidden;
}
.logo-img{
    width:100%;
    height:100%;
    object-fit:contain;
}
.logo-text-main{
    font-size:24px;
    font-weight:700;
}
.logo-text-sub{
    font-size:12px;
    opacity:.9;
}
.safe-tag{
    font-size:11px;
    padding:3px 8px;
    border-radius:999px;
    background:rgba(255,255,255,.15);
    border:1px solid rgba(255,255,255,.4);
}
.hero{
    padding-top:4px;
}
.hero-title{
    font-size:20px;
    margin-bottom:4px;
}
.hero-desc{
    font-size:12px;
    line-height:1.6;
    opacity:.9;
}
main{
    padding:12px 10px 80px;
}
.card{
    background:#fff;
    border-radius:var(--card-radius);
    box-shadow:var(--shadow-soft);
    padding:14px 14px 16px;
    margin-bottom:12px;
}
.card-title{
    font-size:15px;
    font-weight:600;
    margin-bottom:10px;
    display:flex;
    align-items:center;
    justify-content:space-between;
}
.badge-line{
    display:inline-flex;
    align-items:center;
    gap:4px;
    padding:2px 8px;
    border-radius:999px;
    background:#e6fff2;
    color:#0a9156;
    font-size:11px;
}
.badge-dot{
    width:6px;height:6px;border-radius:50%;background:#07c160;
}
.field{
    margin-bottom:12px;
}
.field-label{
    font-size:13px;
    margin-bottom:5px;
}
.field-label span{
    font-size:11px;
    color:var(--wx-text-light);
    margin-left:4px;
}
.input-wrap{
    display:flex;
    align-items:center;
    background:#f7f9fb;
    border-radius:999px;
    padding:8px 12px;
    border:1px solid #e2e6ea;
    transition:border-color var(--transition-fast),box-shadow var(--transition-fast),background var(--transition-fast);
}
.input-wrap:focus-within{
    border-color:#07c160;
    background:#fff;
    box-shadow:0 0 0 1px rgba(7,193,96,.2);
}
.input-wrap input{
    border:none;
    outline:none;
    background:transparent;
    flex:1;
    font-size:14px;
}
.input-wrap button{
    border:none;
    background:transparent;
    font-size:12px;
    color:var(--wx-green);
    padding-left:8px;
    cursor:pointer;
    transition:opacity var(--transition-fast),transform var(--transition-fast);
    white-space:nowrap;
}
.input-wrap button:active{
    opacity:.7;
    transform:scale(.96);
}
.ratio-line{
    font-size:12px;
    color:var(--wx-text-light);
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:6px;
}
.ratio-strong{
    color:#07c160;
    font-weight:600;
}
.package-list{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:10px;
}
@media(min-width:640px){
    .package-list{
        grid-template-columns:repeat(4,1fr);
    }
}
.pkg-item{
    border-radius:12px;
    border:1px solid #e3e6eb;
    padding:10px 9px 9px;
    cursor:pointer;
    position:relative;
    overflow:hidden;
    background:#fff;
    transition:border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast),background var(--transition-fast);
}
.pkg-item:hover{
    transform:translateY(-1px);
    box-shadow:0 6px 14px rgba(0,0,0,.05);
}
.pkg-item:active{
    transform:scale(.97);
}
.pkg-item.selected{
    border-color:#07c160;
    box-shadow:0 0 0 1px rgba(7,193,96,.2),0 8px 16px rgba(0,0,0,.05);
    background:#f6fffb;
}
.pkg-price{
    font-size:16px;
    font-weight:700;
    white-space:nowrap;
}
.pkg-price span{
    font-size:12px;
    font-weight:500;
    margin-left:2px;
}
.pkg-beans{
    font-size:12px;
    color:var(--wx-text-light);
    margin-top:4px;
}
.pkg-tag{
    position:absolute;
    right:-32px;top:8px;
    transform:rotate(40deg);
    background:#ff6f3c;
    color:#fff;
    font-size:10px;
    padding:3px 24px;
    box-shadow:0 3px 8px rgba(0,0,0,.15);
    white-space:nowrap;
}
.pkg-tag.hot{background:#ff9f1c;}
.pkg-tag.max{background:#f44336;}
.pkg-tag.pro{background:#00bcd4;}
.pkg-tag.rec{background:#8bc34a;}
.coupon-top{
    display:flex;
    align-items:center;
    justify-content:space-between;
    margin-bottom:6px;
    gap:8px;
}
.coupon-claim-btn{
    border:none;
    border-radius:999px;
    padding:6px 12px;
    font-size:12px;
    background:linear-gradient(135deg,#07c160,#02b26d);
    color:#fff;
    cursor:pointer;
    display:inline-flex;
    align-items:center;
    gap:5px;
    box-shadow:0 4px 10px rgba(7,193,96,.25);
    transition:transform var(--transition-fast),box-shadow var(--transition-fast),opacity var(--transition-fast);
    white-space:nowrap;
}
.coupon-claim-btn span.icon{
    font-size:13px;
}
.coupon-claim-btn:hover{
    transform:translateY(-1px);
    box-shadow:0 6px 14px rgba(7,193,96,.3);
}
.coupon-claim-btn:active{
    transform:scale(.97);
    box-shadow:0 3px 6px rgba(7,193,96,.25);
}
.coupon-claim-btn.claimed{
    background:#e4f9ee;
    color:#0a9156;
    box-shadow:none;
}
.coupon-desc-tips{
    font-size:11px;
    color:var(--wx-text-light);
    margin-bottom:4px;
}
.coupon-list-wrapper{
    max-height:0;
    overflow:hidden;
    transition:max-height .25s ease;
}
.coupon-list-wrapper.open{
    max-height:500px;
}
.coupon-list{
    display:flex;
    flex-wrap:wrap;
    gap:6px;
    margin-top:4px;
}
.coupon-item{
    width:100%;
    background:#f7f9fb;
    border-radius:10px;
    border:1px dashed #d1d7de;
    padding:6px 8px;
    font-size:11px;
    color:#666;
    position:relative;
    cursor:not-allowed;
    opacity:.7;
    display:flex;
    justify-content:space-between;
    align-items:center;
    transition:background var(--transition-fast),border-color var(--transition-fast),transform var(--transition-fast),opacity var(--transition-fast),color var(--transition-fast);
}
.coupon-item::before,
.coupon-item::after{
    content:"";
    position:absolute;
    top:50%;
    width:8px;height:8px;
    border-radius:50%;
    background:#f5f7f9;
    transform:translateY(-50%);
}
.coupon-item::before{left:-4px;}
.coupon-item::after{right:-4px;}
.coupon-amount{
    font-size:14px;
    font-weight:700;
    color:#ff4d4f;
    white-space:nowrap;
}
.coupon-desc{
    font-size:10px;
    text-align:right;
    margin-left:6px;
}
.coupon-item.available{
    cursor:pointer;
    opacity:1;
    border-style:solid;
    border-color:#07c160;
    background:#f6fffb;
}
.coupon-item.available:hover{
    transform:translateY(-1px);
}
.coupon-item.active{
    background:#07c160;
    border-color:#07c160;
    color:#fff;
}
.coupon-item.active .coupon-amount{
    color:#fff;
}
.coupon-item.active .coupon-desc{
    opacity:.95;
}
.pay-methods{
    display:flex;
    gap:10px;
}
@media(max-width:400px){
    .pay-methods{
        flex-direction:column;
    }
}
.pay-item{
    flex:1;
    border-radius:12px;
    border:1px solid #e1e5ea;
    padding:8px 10px;
    display:flex;
    align-items:center;
    gap:8px;
    cursor:pointer;
    transition:border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast),background var(--transition-fast);
    background:#f8fafc;
}
.pay-item:hover{
    transform:translateY(-1px);
    box-shadow:0 4px 10px rgba(0,0,0,.06);
}
.pay-item:active{
    transform:scale(.97);
}
.pay-item.selected{
    border-color:#07c160;
    background:#f6fffb;
    box-shadow:0 0 0 1px rgba(7,193,96,.25);
}
.pay-icon{
    width:24px;height:24px;border-radius:8px;
    display:flex;
    align-items:center;
    justify-content:center;
    overflow:hidden;
    background:#fff;
}
.pay-icon-img{
    width:100%;
    height:100%;
    object-fit:contain;
}
.pay-text-title{
    font-size:13px;
    font-weight:600;
}
.pay-text-sub{
    font-size:11px;
    color:var(--wx-text-light);
}
.summary-line{
    display:flex;
    justify-content:space-between;
    margin-bottom:4px;
    font-size:12px;
}
.summary-line strong{
    font-weight:600;
}
.coupon-switch-row{
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin:4px 0 6px;
    font-size:12px;
}
.coupon-switch-btn{
    border:none;
    border-radius:999px;
    padding:4px 10px;
    font-size:11px;
    background:#f5f7f9;
    color:#07c160;
    cursor:pointer;
    white-space:nowrap;
    transition:background var(--transition-fast),transform var(--transition-fast),box-shadow var(--transition-fast);
}
.coupon-switch-btn:hover{
    background:#ebf9f2;
    transform:translateY(-1px);
    box-shadow:0 2px 6px rgba(0,0,0,.06);
}
.summary-final{
    margin-top:4px;
    padding-top:6px;
    border-top:1px dashed #e2e6eb;
    font-size:13px;
    display:flex;
    justify-content:space-between;
    align-items:center;
}
.summary-final-amt{
    font-size:16px;
    font-weight:700;
    color:#ff4d4f;
}
.summary-hint{
    font-size:11px;
    color:var(--wx-text-light);
}
.submit-wrap{
    margin-top:10px;
}
.submit-btn{
    width:100%;
    border:none;
    border-radius:999px;
    padding:11px 0;
    font-size:15px;
    font-weight:600;
    color:#fff;
    background:linear-gradient(135deg,#07c160,#02b26d);
    cursor:pointer;
    box-shadow:0 8px 18px rgba(7,193,96,.35);
    transition:transform var(--transition-fast),box-shadow var(--transition-fast),filter var(--transition-fast),opacity var(--transition-fast);
    white-space:nowrap;
}
.submit-btn:hover{
    transform:translateY(-1px);
    box-shadow:0 10px 24px rgba(7,193,96,.4);
}
.submit-btn:active{
    transform:scale(.97);
    box-shadow:0 5px 10px rgba(7,193,96,.3);
}
.submit-btn:disabled{
    opacity:.6;
    cursor:not-allowed;
    box-shadow:none;
}
.tips{
    margin-top:8px;
    font-size:11px;
    color:var(--wx-text-light);
    line-height:1.6;
}
.tips-header{
    display:flex;
    justify-content:space-between;
    align-items:center;
    cursor:pointer;
    padding:4px 0;
}
.tips-header span.label{
    font-size:11px;
    color:#666;
}
.tips-arrow{
    font-size:16px;
    color:#bbb;
    transform:rotate(90deg);
    transition:transform .18s ease-out;
}
.tips ul{
    padding-left:16px;
    margin-top:4px;
    display:none;
}
.tips.open .tips-arrow{
    transform:rotate(270deg);
}
.tips.open ul{
    display:block;
}
.faq-item{
    border-top:1px solid #f0f2f5;
    padding-top:8px;
    margin-top:4px;
}
.faq-q{
    font-size:13px;
    font-weight:600;
    display:flex;
    justify-content:space-between;
    align-items:center;
    cursor:pointer;
}
.faq-arrow{
    font-size:18px;
    color:#bbb;
    transform:rotate(90deg);
    transition:transform .18s ease-out;
}
.faq-a{
    font-size:12px;
    line-height:1.7;
    color:#555;
    margin-top:5px;
    display:none;
}
.faq-item.open .faq-a{
    display:block;
}
.faq-item.open .faq-arrow{
    transform:rotate(270deg);
}
.seo-block{
    padding:6px 0 4px;
    font-size:12px;
    line-height:1.8;
    color:#555;
}
.seo-block h2{
    font-size:14px;
    margin-bottom:6px;
}
.seo-block h3{
    font-size:13px;
    margin:8px 0 4px;
}
.seo-block p{
    margin-bottom:6px;
}
.seo-block ul{
    padding-left:16px;
    margin-bottom:6px;
}
.modal-mask{
    position:fixed;
    left:0;top:0;right:0;bottom:0;
    background:rgba(0,0,0,.35);
    display:none;
    align-items:flex-end;
    justify-content:center;
    z-index:50;
}
@media(min-width:600px){
    .modal-mask{
        align-items:center;
    }
}
.modal{
    background:#fff;
    width:100%;
    max-width:420px;
    border-radius:18px 18px 0 0;
    padding:16px 16px 14px;
    box-shadow:0 -6px 14px rgba(0,0,0,.2);
    animation:slideUp .24s ease-out;
}
@media(min-width:600px){
    .modal{
        border-radius:18px;
        box-shadow:0 10px 30px rgba(0,0,0,.25);
    }
}
@keyframes slideUp{
    from{transform:translateY(30px);opacity:0;}
    to{transform:translateY(0);opacity:1;}
}
.modal-header{
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:8px;
}
.modal-title{
    font-size:15px;
    font-weight:600;
}
.modal-close{
    border:none;
    background:transparent;
    font-size:18px;
    cursor:pointer;
    line-height:1;
    color:#999;
}
.modal-body{
    font-size:13px;
    line-height:1.7;
    color:#444;
    margin-bottom:10px;
}
.modal-body p{
    margin-bottom:4px;
}
.modal-highlight{
    background:#f6fffb;
    border-radius:10px;
    padding:8px 10px;
    margin:6px 0;
    border:1px solid #e2f5eb;
}
.modal-actions{
    display:flex;
    gap:10px;
    margin-top:4px;
}
.btn-secondary,
.btn-primary{
    flex:1;
    border-radius:999px;
    padding:9px 0;
    font-size:14px;
    border:none;
    cursor:pointer;
    transition:transform var(--transition-fast),box-shadow var(--transition-fast),opacity var(--transition-fast);
}
.btn-secondary{
    background:#f5f7f9;
    color:#333;
}
.btn-secondary:hover{
    transform:translateY(-1px);
    box-shadow:0 3px 8px rgba(0,0,0,.06);
}
.btn-secondary:active{
    transform:scale(.97);
}
.btn-primary{
    background:linear-gradient(135deg,#07c160,#02b26d);
    color:#fff;
    box-shadow:0 6px 14px rgba(7,193,96,.33);
}
.btn-primary:hover{
    transform:translateY(-1px);
    box-shadow:0 8px 18px rgba(7,193,96,.4);
}
.btn-primary:active{
    transform:scale(.97);
}
footer{
    padding:14px 12px 18px;
    font-size:11px;
    color:#aaa;
    text-align:center;
    line-height:1.6;
}
.global-loading-mask{
    position:fixed;
    left:0;top:0;right:0;bottom:0;
    background:rgba(0,0,0,.35);
    display:none;
    align-items:center;
    justify-content:center;
    z-index:80;
}
.global-loading-box{
    background:#fff;
    padding:10px 16px;
    border-radius:12px;
    box-shadow:0 4px 12px rgba(0,0,0,.25);
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
}
.loading-spinner{
    width:16px;
    height:16px;
    border-radius:50%;
    border:2px solid #e0e0e0;
    border-top-color:#07c160;
    animation:spin 0.6s linear infinite;
}
@keyframes spin{
    to{transform:rotate(360deg);}
}