/* ===== LiuNeng-style theme for dujiaoka ===== */
:root{
  --bg:#f6f7f9; --surface:#ffffff; --ink:#0b0b0c; --muted:#6b7280;
  --line:#e7e9ee; --line-2:#eff1f5; --dark:#0b0b0d; --dark-2:#17181c;
  --green:#16a34a; --amber:#d97706; --danger:#dc2626;
  --grad:linear-gradient(90deg,#7c3aed 0%,#2563eb 100%);
  --r:18px; --r-lg:22px; --r-sm:12px;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.06);
  --shadow-dark:0 10px 30px rgba(0,0,0,.18);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;letter-spacing:-.01em}
.ln-container{max-width:1120px;margin:0 auto;padding:0 20px}

/* ===== buttons ===== */
.ln-btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;
  border:1px solid transparent;border-radius:999px;padding:12px 22px;font-weight:600;
  font-size:14px;cursor:pointer;transition:.18s ease;white-space:nowrap;line-height:1}
.ln-btn-sm{padding:9px 16px;font-size:13px}
.ln-btn-dark{background:var(--ink);color:#fff}
.ln-btn-dark:hover{background:#26272b;color:#fff;transform:translateY(-1px)}
.ln-btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.ln-btn-ghost:hover{border-color:#c8ccd4;background:#fbfbfc}
.ln-btn .ali-icon{font-size:14px}

/* ===== header / nav ===== */
.ln-header{position:sticky;top:0;z-index:50;background:rgba(246,247,249,.82);
  backdrop-filter:saturate(180%) blur(14px);border-bottom:1px solid var(--line)}
.ln-header-inner{display:flex;align-items:center;gap:16px;height:64px}
.ln-brand{display:flex;align-items:center;gap:10px;font-weight:700;flex:0 0 auto}
.ln-brand-logo{width:30px;height:30px;border-radius:50%;object-fit:cover}
.ln-brand-name{font-size:16px;letter-spacing:-.02em}
.ln-nav{display:flex;align-items:center;gap:2px;margin:0 auto;
  background:#eceef2;border:1px solid var(--line);border-radius:999px;padding:5px}
.ln-nav-link{padding:8px 18px;border-radius:999px;font-size:14px;font-weight:500;color:#4b5563;transition:.15s}
.ln-nav-link:hover{color:var(--ink)}
.ln-nav-link.active{background:#fff;color:var(--ink);box-shadow:0 1px 2px rgba(16,24,40,.08)}
.ln-header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.ln-nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:0;padding:8px;cursor:pointer}
.ln-nav-toggle span{width:20px;height:2px;background:var(--ink);border-radius:2px}

/* ===== hero ===== */
.ln-hero{padding:64px 0 28px}
.ln-hero-grid{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start}
.ln-eyebrow{font-size:13px;color:var(--muted);font-weight:600;margin-bottom:14px;text-transform:uppercase;letter-spacing:.04em}
.ln-hero-title{font-size:52px;line-height:1.05;font-weight:800;letter-spacing:-.03em}
.ln-grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.ln-hero-sub{color:var(--muted);font-size:16px;margin:18px 0 26px;max-width:560px}
.ln-hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.ln-search{display:flex;gap:10px;margin-top:22px;max-width:520px}
.ln-search input{flex:1;border:1px solid var(--line);background:#fff;border-radius:999px;padding:12px 18px;font-size:14px;outline:none;transition:.15s}
.ln-search input:focus{border-color:#b6bcc7;box-shadow:0 0 0 4px rgba(37,99,235,.08)}
.ln-hero-side{display:flex;flex-direction:column;gap:14px}
.ln-quick{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;transition:.18s;box-shadow:var(--shadow)}
.ln-quick:hover{transform:translateY(-2px);border-color:#d5d9e0}
.ln-quick-label{font-size:12px;color:var(--muted);margin-bottom:6px}
.ln-quick-title{font-size:16px;font-weight:700;display:flex;justify-content:space-between;align-items:center}
.ln-quick-arrow{color:var(--muted)}

/* ===== notice ===== */
.ln-notice{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r);padding:16px 18px;margin:8px 0 0;box-shadow:var(--shadow)}
.ln-notice-tag{flex:0 0 auto;background:var(--ink);color:#fff;font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px}
.ln-notice-body{color:#374151;font-size:14px}

/* ===== section ===== */
.ln-section{padding:40px 0 64px}
.ln-section-head{margin-bottom:22px}
.ln-section-title{font-size:26px;font-weight:800;letter-spacing:-.02em}
.ln-section-sub{color:var(--muted);margin-top:8px}
.ln-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:26px}
.ln-chip{padding:8px 16px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:13px;font-weight:500;color:#4b5563;cursor:pointer;transition:.15s}
.ln-chip:hover{border-color:#c8ccd4;color:var(--ink)}
.ln-chip.active{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ===== goods grid + dark cards ===== */
.ln-goods-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ln-card{position:relative;display:flex;flex-direction:column;background:var(--dark);color:#fff;
  border-radius:var(--r-lg);overflow:hidden;border:1px solid #1e2024;transition:.2s ease;min-height:280px}
.ln-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-dark);color:#fff}
.ln-tag{position:absolute;top:14px;left:14px;z-index:2;display:inline-flex;align-items:center;gap:5px;
  font-size:11px;font-weight:600;padding:5px 10px;border-radius:999px;color:#fff}
.ln-tag .ali-icon{font-size:12px}
.ln-tag-green{background:var(--green)}
.ln-tag-amber{background:var(--amber)}
.ln-card-media{display:flex;align-items:center;justify-content:center;height:150px;
  background:radial-gradient(120% 120% at 50% 0%,#26272d 0%,#0b0b0d 70%);padding:24px}
.ln-card-media img{max-height:100%;width:auto;object-fit:contain}
.ln-card-mono{font-size:40px;font-weight:800;letter-spacing:-.02em;color:#fff;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.ln-card-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:12px;flex:1}
.ln-card-title{font-size:17px;font-weight:700;line-height:1.35}
.ln-card-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:-2px}
.ln-stock{font-size:12px;color:#9aa0aa}
.ln-badge-soft{font-size:11px;color:#fbbf24;border:1px solid #7c5e1a;background:#2a2410;padding:2px 8px;border-radius:999px}
.ln-card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:6px}
.ln-price{font-size:24px;font-weight:800;letter-spacing:-.02em}
.ln-price-sym{font-size:14px;font-weight:600;margin-right:2px;color:#c7cbd2}
.ln-buy{font-size:13px;font-weight:600;color:#fff;background:#26272c;border:1px solid #34363c;padding:8px 14px;border-radius:999px}
.ln-card:hover .ln-buy{background:#fff;color:#0b0b0d}

/* ===== footer ===== */
.ln-footer{border-top:1px solid var(--line);background:#fff;padding:40px 0;margin-top:20px}
.ln-footer-top{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.ln-footer-title{font-size:16px;font-weight:700}
.ln-footer-desc{color:var(--muted);font-size:13px;margin:8px 0 0;max-width:420px}
.ln-footer-links{display:flex;gap:20px;font-size:14px;color:#4b5563}
.ln-footer-links a:hover{color:var(--ink)}
.ln-footer-custom{color:var(--muted);font-size:13px;margin-top:18px}
.ln-footer-bottom{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  margin-top:18px;padding-top:18px;border-top:1px solid var(--line-2);color:var(--muted);font-size:13px}
.ln-footer-powered a:hover{color:var(--ink)}

/* ===== Bootstrap overrides for buy / order / pay / bill pages ===== */
.main-container{padding:40px 0 64px}
.main-container .container{max-width:1120px}
.card{border:1px solid var(--line)!important;border-radius:var(--r)!important;box-shadow:var(--shadow)!important;background:#fff}
.card-header{background:#fff!important;border-bottom:1px solid var(--line)!important;font-weight:700;border-radius:var(--r) var(--r) 0 0!important;padding:16px 20px}
.card-body{padding:20px}
.card-title{font-weight:800;letter-spacing:-.01em}
.btn{border-radius:999px!important;font-weight:600!important;transition:.18s!important}
.btn-primary,.btn-outline-primary{background:var(--ink)!important;border-color:var(--ink)!important;color:#fff!important}
.btn-primary:hover,.btn-outline-primary:hover{background:#26272b!important;border-color:#26272b!important}
.btn-secondary{background:#fff!important;border-color:var(--line)!important;color:var(--ink)!important}
.btn-outline-success{background:transparent!important;border-color:var(--green)!important;color:var(--green)!important}
.form-control,.form-select{border-radius:12px!important;border:1px solid var(--line)!important;padding:10px 14px!important;font-size:14px!important}
.form-control:focus{border-color:#b6bcc7!important;box-shadow:0 0 0 4px rgba(37,99,235,.08)!important}
.col-form-label,label{font-weight:600;font-size:13px;color:#374151}
.badge{border-radius:999px!important;font-weight:600;padding:.4em .7em}
.bg-success{background:var(--green)!important}
.bg-warning{background:var(--amber)!important;color:#fff!important}
.bg-dark{background:var(--ink)!important}
.modal-content{border:0!important;border-radius:var(--r-lg)!important;box-shadow:0 20px 60px rgba(0,0,0,.25)!important}
.modal-header,.modal-footer{border-color:var(--line)!important}
.table{--bs-table-bg:transparent}
.table>:not(caption)>*>*{padding:.7rem .75rem}
.ln-buy-mono{display:flex;align-items:center;justify-content:center;height:180px;margin:16px;border-radius:var(--r);
  background:radial-gradient(120% 120% at 50% 0%,#26272d 0%,#0b0b0d 70%);font-size:52px;font-weight:800;color:#c7b3ff}
.jumbotron{background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.separator{height:1px;background:var(--line);margin:16px auto;max-width:80px}
.nav-pills .btn{margin:3px}

/* ===== responsive ===== */
@media (max-width:900px){
  .ln-hero-grid{grid-template-columns:1fr;gap:24px}
  .ln-hero-side{flex-direction:row}
  .ln-quick{flex:1}
  .ln-goods-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .ln-hero-title{font-size:40px}
}
@media (max-width:640px){
  .ln-hero{padding:36px 0 16px}
  .ln-hero-title{font-size:32px}
  .ln-nav{display:none;position:absolute;top:64px;left:20px;right:20px;flex-direction:column;
    background:#fff;border-radius:16px;padding:10px;box-shadow:var(--shadow);margin:0}
  .ln-nav.open{display:flex}
  .ln-nav-link{width:100%}
  .ln-nav-toggle{display:flex}
  .ln-header-actions .ln-btn{display:none}
  .ln-goods-grid{grid-template-columns:1fr 1fr;gap:12px}
  .ln-hero-side{flex-direction:column}
  .ln-price{font-size:20px}
}