/* ========== 设计变量 ========== */
:root{
    --bg:#f4f6fb;
    --bg2:#eef1f8;
    --card:#ffffff;
    --text:#1b2130;
    --muted:#8a92a6;
    --line:#edeff5;
    --primary:#5b6cff;
    --primary-2:#8b5bff;
    --grad:linear-gradient(135deg,#5b6cff 0%,#8b5bff 100%);
    --grad-soft:linear-gradient(135deg,rgba(91,108,255,.12),rgba(139,91,255,.12));
    --success:#12b886;
    --warn:#f5a623;
    --danger:#ff5b6c;
    --radius:16px;
    --radius-sm:12px;
    --shadow:0 6px 24px rgba(27,33,48,.06);
    --shadow-lg:0 18px 48px rgba(91,108,255,.20);
    --ring:0 0 0 4px rgba(91,108,255,.14);
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    color:var(--text);
    background:var(--bg);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    min-height:100vh;
    display:flex;
    flex-direction:column;
}
main.container{flex:1;width:100%}

a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea,select{font-family:inherit}
code{font-family:"SF Mono",SFMono-Regular,Consolas,"Liberation Mono",monospace}

.container{max-width:1080px;margin:0 auto;padding:0 20px}

/* ========== 顶部导航 ========== */
.navbar{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.85);
    backdrop-filter:saturate(180%) blur(16px);
    -webkit-backdrop-filter:saturate(180%) blur(16px);
    border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{font-size:18px;font-weight:800;display:flex;align-items:center;gap:8px;letter-spacing:.5px}
.brand-dot{width:12px;height:12px;border-radius:4px;background:var(--grad);display:inline-block;box-shadow:0 2px 8px rgba(91,108,255,.4)}
.nav-links{display:flex;gap:6px}
.nav-links a{padding:7px 14px;border-radius:10px;font-size:14px;font-weight:600;color:var(--muted);transition:.2s}
.nav-links a:hover{color:var(--text);background:var(--bg2)}
.nav-links a.active{color:#fff;background:var(--grad);box-shadow:var(--shadow)}

.notice-bar{background:var(--grad);color:#fff;font-size:13px;text-align:center;padding:7px 20px}

/* ========== Hero ========== */
.hero{text-align:center;padding:48px 0 28px}
.hero h1{font-size:34px;font-weight:800;letter-spacing:1px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:10px}
.hero p{color:var(--muted);font-size:16px}
.hero-stats{display:flex;justify-content:center;gap:40px;margin-top:26px;flex-wrap:wrap}
.hero-stats div{display:flex;flex-direction:column;align-items:center}
.hero-stats b{font-size:24px;font-weight:800}
.hero-stats span{font-size:12px;color:var(--muted)}

.page-head{padding:36px 0 10px}
.page-head h1{font-size:28px;font-weight:800}
.page-head p{margin-top:4px}

/* ========== 商品栅格 ========== */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px;padding:20px 0 48px}
.product{position:relative;padding:22px;display:flex;flex-direction:column;gap:10px;transition:transform .28s cubic-bezier(.2,.8,.2,1),box-shadow .28s}
.product:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.product-top{display:flex;justify-content:flex-start;min-height:22px}
.badge{font-size:12px;font-weight:700;padding:3px 10px;border-radius:20px}
.badge-on{background:rgba(18,184,134,.12);color:var(--success)}
.badge-off{background:rgba(255,91,108,.12);color:var(--danger)}
.product-name{font-size:18px;font-weight:700}
.product-desc{font-size:13px;color:var(--muted);min-height:40px;flex:1}
.product-price{font-size:30px;font-weight:800;color:var(--primary)}
.product-price span{font-size:16px}
.product-stock{font-size:12px;color:var(--muted);margin-bottom:2px}

/* ========== 卡片通用 ========== */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}

/* ========== 按钮 ========== */
.btn{
    display:inline-flex;align-items:center;justify-content:center;gap:6px;
    padding:10px 18px;border-radius:12px;font-size:14px;font-weight:700;
    transition:transform .15s,box-shadow .2s,opacity .2s;white-space:nowrap;
}
.btn:active{transform:scale(.96)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(91,108,255,.28)}
.btn-primary:hover{box-shadow:0 10px 26px rgba(91,108,255,.40)}
.btn-primary:disabled{opacity:.45;cursor:not-allowed;box-shadow:none}
.btn-ghost{background:var(--bg2);color:var(--text)}
.btn-ghost:hover{background:#e6eaf5}
.btn-danger{background:rgba(255,91,108,.1);color:var(--danger)}
.btn-sm{padding:6px 12px;font-size:13px;border-radius:9px}
.btn-lg{padding:13px 20px;font-size:16px}
.btn-block{width:100%}
.icon-btn{width:32px;height:32px;border-radius:10px;background:var(--bg2);color:var(--muted);font-size:14px;display:grid;place-items:center;transition:.2s}
.icon-btn:hover{background:#e6eaf5;color:var(--text)}

/* ========== 表单 ========== */
.field{display:block;margin-bottom:16px}
.field>span{display:block;font-size:13px;font-weight:700;margin-bottom:7px;color:var(--text)}
.field .req{color:var(--danger);font-style:normal}
.field input,.field textarea,.field select{
    width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:12px;
    font-size:15px;background:#fff;transition:border .2s,box-shadow .2s;color:var(--text);
}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--primary);box-shadow:var(--ring)}
.field .hint{font-style:normal;display:block;font-size:12px;color:var(--muted);margin-top:6px}

.stepper{display:flex;align-items:center;gap:12px}
.stepper button{width:42px;height:42px;border-radius:12px;background:var(--bg2);font-size:20px;font-weight:700;color:var(--text);transition:.15s}
.stepper button:active{transform:scale(.92);background:#e6eaf5}
.stepper input{width:64px;text-align:center;font-weight:800;background:var(--bg2);border-color:transparent}

.pay-types{display:flex;gap:8px;flex-wrap:wrap}
.pay-type{
    display:flex;align-items:center;gap:7px;padding:9px 14px;border:1.5px solid var(--line);
    border-radius:12px;font-size:13px;font-weight:700;cursor:pointer;transition:.2s;background:#fff;
}
.pay-type input{display:none}
.pt-icon{width:20px;height:20px;border-radius:6px;display:inline-grid;place-items:center;font-size:12px;font-style:normal;color:#fff;background:#2b6dff}
.pt-wx{background:#18b85c}
.pt-qq{background:#12a4e0}
.pay-type.active{border-color:var(--primary);background:var(--grad-soft);box-shadow:var(--ring)}

/* ========== 弹窗 ========== */
.modal{position:fixed;inset:0;z-index:100;display:none;align-items:flex-end;justify-content:center}
.modal.show{display:flex}
.modal-mask{position:absolute;inset:0;background:rgba(20,24,36,.45);backdrop-filter:blur(3px);animation:fade .25s}
.modal-panel{
    position:relative;background:#fff;width:100%;max-width:430px;border-radius:20px 20px 0 0;
    padding:20px;animation:slideup .3s cubic-bezier(.2,.8,.2,1);max-height:92vh;overflow:auto;
}
@media(min-width:520px){.modal{align-items:center}.modal-panel{border-radius:20px;animation:zoom .25s}}
.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.modal-head h3{font-size:18px;font-weight:800}
.modal-body{padding-bottom:6px}
.modal-foot{margin-top:6px}
.buy-info{display:flex;align-items:center;justify-content:space-between;background:var(--grad-soft);border-radius:12px;padding:12px 16px;margin-bottom:16px}
.buy-info-name{font-weight:700}
.buy-info-price{font-weight:800;color:var(--primary);font-size:18px}
.buy-total{display:flex;align-items:center;justify-content:space-between;border-top:1px dashed var(--line);padding-top:14px;font-size:15px;color:var(--muted)}
.buy-total b{font-size:24px;color:var(--danger);font-weight:800}

/* ========== 查询 ========== */
.query-card{padding:20px;margin-bottom:24px}
.query-form{display:flex;gap:10px}
.query-form input{flex:1;padding:12px 14px;border:1.5px solid var(--line);border-radius:12px;font-size:15px}
.query-form input:focus{outline:none;border-color:var(--primary);box-shadow:var(--ring)}
.result-list{display:flex;flex-direction:column;gap:16px;padding-bottom:48px}
.order-result{padding:18px}
.order-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.order-name{font-weight:800;font-size:15px}
.order-time{font-size:12px;color:var(--muted)}

/* ========== 卡密展示 ========== */
.card-key{display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--bg2);border:1px dashed #cbd2e4;border-radius:10px;padding:10px 14px;margin-top:8px}
.card-key code{font-size:14px;word-break:break-all;color:var(--text)}
.card-result{margin:18px 0;text-align:left}
.card-result-title{font-size:13px;color:var(--muted);margin-bottom:6px}

/* ========== 消息页 ========== */
.msg{max-width:420px;margin:50px auto;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:34px 26px;text-align:center;animation:zoom .35s}
.msg h2{font-size:22px;font-weight:800;margin-bottom:8px}
.msg p{color:var(--muted);margin-bottom:18px;word-break:break-all}
.msg-icon{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;font-size:30px;font-weight:800;margin:0 auto 16px}
.msg-ok{background:rgba(18,184,134,.12);color:var(--success)}
.msg-err{background:rgba(255,91,108,.12);color:var(--danger)}
.msg-warn{background:rgba(245,166,35,.14);color:var(--warn)}
.msg-actions{display:flex;gap:10px;justify-content:center;margin-top:8px}
.accent{color:var(--primary)}

/* ========== 空状态 ========== */
.empty{text-align:center;padding:60px 20px;color:var(--muted)}
.empty-icon{font-size:44px;margin-bottom:10px}

/* ========== 加载动画 ========== */
.spinner{width:44px;height:44px;margin:0 auto 16px;border:4px solid var(--bg2);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}

/* ========== Toast ========== */
.toast-wrap{position:fixed;top:70px;left:50%;transform:translateX(-50%);z-index:200;display:flex;flex-direction:column;gap:8px;pointer-events:none}
.toast{background:rgba(27,33,48,.92);color:#fff;padding:11px 18px;border-radius:12px;font-size:14px;box-shadow:var(--shadow-lg);animation:toastin .3s;backdrop-filter:blur(6px)}
.toast-error{background:rgba(255,91,108,.95)}
.toast-success{background:rgba(18,184,134,.95)}

/* ========== 安装页 ========== */
.install-body{display:grid;place-items:center;padding:24px;background:var(--bg)}
.install-card{width:100%;max-width:400px;padding:30px}
.install-card h1{font-size:24px;font-weight:800;margin-bottom:4px}
.install-card>p{margin-bottom:20px}

/* ========== 动效 ========== */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s cubic-bezier(.2,.8,.2,1),transform .6s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}

@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes slideup{from{transform:translateY(100%)}to{transform:none}}
@keyframes zoom{from{opacity:0;transform:scale(.92)}to{opacity:1;transform:none}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes toastin{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}

/* ========== 页脚 ========== */
.footer{margin-top:auto;border-top:1px solid var(--line);background:#fff;padding:22px 0;text-align:center;font-size:13px;color:var(--muted)}

/* ========== 移动端 ========== */
@media(max-width:520px){
    .container{padding:0 16px}
    .hero h1{font-size:28px}
    .hero-stats{gap:28px}
    .grid{grid-template-columns:1fr 1fr;gap:12px;padding-top:16px}
    .product{padding:16px}
    .product-price{font-size:24px}
    .query-form{flex-direction:column}
    .query-form button{width:100%}
}

/* ========== 后台 ========== */
.admin-body{background:var(--bg)}
.admin-shell{display:flex;min-height:100vh}
.admin-side{
    width:230px;background:#fff;border-right:1px solid var(--line);padding:20px 14px;
    position:fixed;top:0;bottom:0;left:0;z-index:60;display:flex;flex-direction:column;gap:4px;
}
.admin-side .brand{margin-bottom:18px;padding:0 8px}
.admin-side a{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:11px;font-size:14px;font-weight:600;color:var(--muted);transition:.2s}
.admin-side a:hover{background:var(--bg2);color:var(--text)}
.admin-side a.active{background:var(--grad);color:#fff;box-shadow:var(--shadow)}
.admin-main{flex:1;margin-left:230px;padding:28px}
.admin-topbar{display:none}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:16px;margin-bottom:24px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.stat b{font-size:26px;font-weight:800;display:block}
.stat span{font-size:13px;color:var(--muted)}
.admin-table-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
table.admin-table{width:100%;border-collapse:collapse;font-size:14px}
table.admin-table th,table.admin-table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
table.admin-table th{background:var(--bg2);font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.3px}
table.admin-table tr:last-child td{border-bottom:none}
.tag{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;font-weight:700}
.tag-paid{background:rgba(18,184,134,.12);color:var(--success)}
.tag-pending{background:rgba(245,166,35,.14);color:var(--warn)}
.tag-expired{background:rgba(255,91,108,.12);color:var(--danger)}
.tag-unsold{background:rgba(91,108,255,.12);color:var(--primary)}
.tag-sold{background:rgba(18,184,134,.12);color:var(--success)}
.tag-locked{background:rgba(245,166,35,.14);color:var(--warn)}
.tag-on{background:rgba(18,184,134,.12);color:var(--success)}
.tag-off{background:rgba(255,91,108,.12);color:var(--danger)}
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px;flex-wrap:wrap}
.toolbar h2{font-size:20px;font-weight:800}
.pagination{display:flex;gap:6px;justify-content:center;padding:16px}
.pagination a,.pagination span{min-width:34px;height:34px;display:grid;place-items:center;border-radius:10px;font-size:14px;font-weight:600;background:var(--bg2);color:var(--muted)}
.pagination a:hover{background:#e6eaf5;color:var(--text)}
.pagination .cur{background:var(--grad);color:#fff}
.admin-actions{display:flex;gap:8px;flex-wrap:wrap}
.login-card{max-width:380px;margin:10vh auto;padding:32px}
.login-card h1{font-size:22px;font-weight:800;margin-bottom:4px;text-align:center}
.login-card>p{text-align:center;margin-bottom:22px}

@media(max-width:820px){
    .admin-side{display:none}
    .admin-main{margin-left:0;padding:16px}
    .admin-topbar{display:flex;position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line);padding:10px 16px;gap:6px;overflow-x:auto}
    .admin-topbar a{padding:8px 12px;border-radius:10px;font-size:13px;font-weight:600;color:var(--muted);white-space:nowrap}
    .admin-topbar a.active{background:var(--grad);color:#fff}
}