*{box-sizing:border-box;margin:0;padding:0}
:root{--orange:#f97316;--orange-dark:#ea6a0a;--ink:#1f2937;--muted:#6b7280;--line:#e5e7eb;--bg:#f7f7f5;--cream:#fdf6ec}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);font-size:15px}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:15px}
.hidden{display:none!important}

/* ===== 布局 ===== */
.layout{display:flex;min-height:100vh}
.sidebar{width:240px;background:#fff;border-right:1px solid var(--line);position:fixed;top:0;bottom:0;left:0;display:flex;flex-direction:column;z-index:40}
.brand{display:flex;align-items:center;gap:10px;padding:20px 18px 14px;font-size:19px;font-weight:700}
.brand .logo{width:38px;height:38px;border-radius:10px;background:var(--orange);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;flex:none}
.nav{flex:1;overflow-y:auto;padding:6px 12px}
.nav .grp{font-size:12px;color:#9ca3af;padding:14px 10px 6px}
.nav a{display:flex;align-items:center;gap:10px;padding:10px;border-radius:10px;color:#374151;margin-bottom:2px}
.nav a:hover{background:#f3f4f6}
.nav a.active{background:#fff1e6;color:var(--orange);font-weight:600;box-shadow:inset 3px 0 0 var(--orange)}
.nav a .ic{width:20px;text-align:center}
.side-foot{border-top:1px solid var(--line);padding:14px}
.side-foot .st{font-size:13px;color:var(--muted);margin-bottom:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:none;border-radius:12px;padding:11px 18px;font-size:15px;font-weight:600}
.btn-orange{background:var(--orange);color:#fff}
.btn-orange:hover{background:var(--orange-dark)}
.btn-white{background:#fff;border:1.5px solid #d1d5db;color:var(--ink)}
.btn-block{width:100%}
.btn-sm{padding:8px 14px;font-size:14px;border-radius:10px}
.main{flex:1;margin-left:240px;min-width:0}
.topbar{position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:58px}
.topbar .crumb{font-size:17px;font-weight:700}
.topbar .acts{display:flex;align-items:center;gap:20px}
.topbar .acts button{background:none;border:none;font-size:15px;color:#374151;padding:6px 2px}
.topbar .acts button:hover{color:var(--orange)}
.topbar .bal{font-size:14px;color:var(--orange);font-weight:700}
.content{max-width:1020px;margin:0 auto;padding:28px 24px 60px}
.hamburger{display:none;background:none;border:none;font-size:22px;padding:8px}

/* ===== 首页 ===== */
.hero{background:var(--cream);border-radius:24px;padding:44px 36px;text-align:center}
.hero h1{font-size:34px;line-height:1.35;margin-bottom:16px}
.hero p{color:#4b5563;line-height:1.8;max-width:640px;margin:0 auto 26px}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-btns .btn{padding:14px 30px;font-size:16px;border-radius:14px}
.price-pill{background:#eff6ff;color:#1e40af;border-radius:14px;padding:14px 18px;text-align:center;margin:20px auto 0;max-width:640px;line-height:1.7;font-size:14px}
.checks{display:flex;flex-wrap:wrap;gap:8px 28px;justify-content:center;margin-top:20px;color:#374151;font-size:14px}
.checks span::before{content:"✓ ";color:var(--orange);font-weight:700}
.section{background:#fff;border-radius:20px;padding:28px;margin-top:24px}
.section h2{font-size:22px;margin-bottom:14px}
.section p{color:#4b5563;line-height:1.9}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:24px}
.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;cursor:pointer;transition:.15s}
.card:hover{border-color:var(--orange);box-shadow:0 4px 18px rgba(249,115,22,.12)}
.card h3{font-size:17px;margin-bottom:8px}
.card p{color:var(--muted);font-size:14px;line-height:1.7}
.card .price{color:var(--orange);font-weight:700;margin-top:12px;font-size:14px}
.card .go{color:var(--orange);font-weight:700;margin-top:6px}

/* ===== 工具页 ===== */
.toolbox{background:#fff;border-radius:20px;padding:26px}
.toolbox h2{font-size:21px;margin-bottom:6px}
.toolbox .sub{color:var(--muted);font-size:14px;margin-bottom:18px;line-height:1.7}
.upload{border:2px dashed #d1d5db;border-radius:16px;padding:34px;text-align:center;color:var(--muted);cursor:pointer}
.upload:hover{border-color:var(--orange)}
.preview-wrap{position:relative;margin:16px 0;border-radius:14px;overflow:hidden;background:#111}
.preview-wrap video,.preview-wrap img,.preview-wrap canvas{display:block;width:100%;max-height:460px;object-fit:contain}
.selbox{position:absolute;border:2.5px solid var(--orange);background:rgba(249,115,22,.12);cursor:move;touch-action:none}
.selbox .handle{position:absolute;width:16px;height:16px;background:#fff;border:2px solid var(--orange);border-radius:50%;right:-8px;bottom:-8px;cursor:nwse-resize}
.coords{font-size:13px;color:var(--muted);margin:6px 0 14px}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin:12px 0}
.row label{font-size:14px;color:#374151}
select,input[type=text],input[type=email],input[type=password],textarea{border:1.5px solid #e5e7eb;border-radius:12px;padding:11px 14px;background:#f9fafb;width:100%}
select:focus,input:focus,textarea:focus{outline:none;border-color:var(--orange);background:#fff}
select{width:auto;min-width:150px}
.progress{height:8px;background:#f3f4f6;border-radius:99px;overflow:hidden;margin:14px 0}
.progress i{display:block;height:100%;background:var(--orange);width:0}
.status{font-size:14px;color:var(--muted);line-height:1.7}
.compare{display:flex;gap:12px}
.compare>div{flex:1}
.compare img{width:100%;border-radius:12px}
.thumbs{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0}
.thumbs img{width:76px;height:76px;object-fit:cover;border-radius:10px;border:1px solid var(--line)}
.ref-item{position:relative}
.ref-item button{position:absolute;top:-6px;right:-6px;width:22px;height:22px;border-radius:50%;border:none;background:#ef4444;color:#fff;font-size:13px}

/* ===== 表格/列表 ===== */
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:11px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{color:var(--muted);font-weight:600;white-space:nowrap}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.tabs button{border:1px solid var(--line);background:#fff;border-radius:99px;padding:8px 16px;font-size:14px}
.tabs button.active{background:var(--orange);border-color:var(--orange);color:#fff}
.pkg{border:1.5px solid var(--line);border-radius:16px;padding:18px;margin-bottom:12px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.pkg b{font-size:17px}
.pkg .pts{color:var(--orange);font-weight:700}
.pkg .pr{color:var(--muted);font-size:14px}

/* ===== 弹窗 ===== */
.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:100;display:flex;align-items:center;justify-content:center;padding:16px}
.modal{background:#fff;border-radius:20px;width:100%;max-width:420px;padding:30px 28px;position:relative}
.modal h2{font-size:22px;text-align:center}
.modal .msub{text-align:center;color:var(--muted);font-size:14px;margin:8px 0 22px}
.modal .x{position:absolute;top:14px;right:16px;background:none;border:none;font-size:20px;color:#9ca3af}
.field{position:relative;margin-bottom:14px}
.field .ficon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:#9ca3af}
.field input{padding-left:42px}
.field .eye{position:absolute;right:10px;top:50%;transform:translateY(-50%);background:none;border:none;font-size:17px;color:#9ca3af}
.modal .switch{text-align:center;margin-top:16px;font-size:14px;color:var(--muted)}
.modal .switch button{background:none;border:none;color:var(--orange);font-weight:700;font-size:14px}
.err{color:#dc2626;font-size:13px;min-height:18px;margin-bottom:6px}
.mtabs{display:flex;background:#f3f4f6;border-radius:12px;padding:4px;margin-bottom:20px}
.mtabs button{flex:1;border:none;background:none;padding:10px;border-radius:9px;font-size:15px;font-weight:600;color:#6b7280}
.mtabs button.active{background:#fff;color:var(--ink);box-shadow:0 1px 4px rgba(0,0,0,.08)}

/* ===== 抽屉（手机） ===== */
.drawer-bg{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:90}
.drawer{position:fixed;top:0;bottom:0;left:0;width:78%;max-width:320px;background:#fff;z-index:95;display:flex;flex-direction:column;transform:translateX(-100%);transition:transform .25s}
.drawer.open{transform:translateX(0)}
.drawer .d-head{display:flex;align-items:center;justify-content:space-between;padding:18px;border-bottom:1px solid var(--line);font-weight:700;font-size:17px}
.drawer .d-head button{background:none;border:none;font-size:20px}
.drawer .nav{padding:10px 12px}
.drawer .d-foot{border-top:1px solid var(--line);padding:16px}
.drawer .d-foot .st{font-size:13px;color:var(--muted);margin-bottom:10px}

/* ===== 小程序版 ===== */
.miniapp{max-width:480px;margin:0 auto;min-height:100vh;background:var(--bg);padding-bottom:76px}
.miniapp .m-top{background:#fff;padding:16px;text-align:center;font-weight:700;font-size:17px;border-bottom:1px solid var(--line)}
.miniapp .m-body{padding:16px}
.tabbar{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:480px;background:#fff;border-top:1px solid var(--line);display:flex;z-index:40}
.tabbar button{flex:1;border:none;background:none;padding:11px 0 13px;font-size:13px;color:#6b7280}
.tabbar button.active{color:var(--orange);font-weight:700}
.tabbar button .tic{display:block;font-size:20px}

/* ===== 后台 ===== */
.admin{display:flex;min-height:100vh;background:var(--bg)}
.admin-nav{width:210px;background:#fff;border-right:1px solid var(--line);position:fixed;top:0;bottom:0;left:0;padding:18px 12px;display:flex;flex-direction:column}
.admin-nav h1{font-size:17px;padding:6px 10px 16px}
.admin-nav a{display:block;padding:11px 12px;border-radius:10px;color:#374151;margin-bottom:2px}
.admin-nav a.active{background:#fff1e6;color:var(--orange);font-weight:700}
.admin-nav .quit{margin-top:auto;color:#6b7280}
.admin-main{flex:1;margin-left:210px;padding:24px;max-width:1100px}
.admin-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:22px}
.stat{background:#fff;border-radius:14px;padding:16px}
.stat .n{font-size:24px;font-weight:800;margin-top:4px}
.stat .l{font-size:13px;color:var(--muted)}
.admin-card{background:#fff;border-radius:16px;padding:22px;margin-bottom:18px}
.admin-card h3{font-size:17px;margin-bottom:14px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-grid .full{grid-column:1/-1}
.toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%);background:#1f2937;color:#fff;padding:12px 20px;border-radius:12px;z-index:200;font-size:14px;max-width:90vw;text-align:center}

/* ===== 手机适配 ===== */
@media (max-width:900px){
  .sidebar{display:none}
  .main{margin-left:0}
  .hamburger{display:block}
  .topbar{padding:0 12px;height:56px}
  .topbar .crumb{font-size:16px}
  .topbar .acts{gap:14px}
  .topbar .acts .hide-m{display:none}
  .content{padding:18px 14px 50px}
  .hero{padding:30px 18px;border-radius:18px}
  .hero h1{font-size:26px}
  .cards{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr 1fr}
  .admin-nav{position:fixed;top:0;bottom:0;left:0;transform:translateX(-100%);transition:transform .25s;z-index:95;width:230px}
  .admin-nav.open{transform:translateX(0)}
  .admin-main{margin-left:0;padding:16px}
  .form-grid{grid-template-columns:1fr}
  .compare{flex-direction:column}
}